diff options
Diffstat (limited to 'activerecord/lib')
103 files changed, 1852 insertions, 993 deletions
diff --git a/activerecord/lib/active_record.rb b/activerecord/lib/active_record.rb index 1844b29ccb..264f869c68 100644 --- a/activerecord/lib/active_record.rb +++ b/activerecord/lib/active_record.rb @@ -53,7 +53,9 @@ module ActiveRecord autoload :Persistence autoload :QueryCache autoload :Querying + autoload :CollectionCacheKey autoload :ReadonlyAttributes + autoload :RecordInvalid, 'active_record/validations' autoload :Reflection autoload :RuntimeRegistry autoload :Sanitization diff --git a/activerecord/lib/active_record/aggregations.rb b/activerecord/lib/active_record/aggregations.rb index 3d497a30fb..f7b50cd25a 100644 --- a/activerecord/lib/active_record/aggregations.rb +++ b/activerecord/lib/active_record/aggregations.rb @@ -142,7 +142,7 @@ module ActiveRecord # converted to an instance of value class if necessary. # # For example, the NetworkResource model has +network_address+ and +cidr_range+ attributes that should be - # aggregated using the NetAddr::CIDR value class (http://www.ruby-doc.org/gems/docs/n/netaddr-1.5.0/NetAddr/CIDR.html). + # aggregated using the NetAddr::CIDR value class (http://www.rubydoc.info/gems/netaddr/1.5.0/NetAddr/CIDR). # The constructor for the value class is called +create+ and it expects a CIDR address string as a parameter. # New values can be assigned to the value object using either another NetAddr::CIDR object, a string # or an array. The <tt>:constructor</tt> and <tt>:converter</tt> options can be used to meet diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index deecd1b7b7..a830b0e0e4 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -61,12 +61,18 @@ module ActiveRecord end end - class HasManyThroughCantAssociateThroughHasOneOrManyReflection < ActiveRecordError #:nodoc: + class ThroughCantAssociateThroughHasOneOrManyReflection < ActiveRecordError #:nodoc: def initialize(owner, reflection) super("Cannot modify association '#{owner.class.name}##{reflection.name}' because the source reflection class '#{reflection.source_reflection.class_name}' is associated to '#{reflection.through_reflection.class_name}' via :#{reflection.source_reflection.macro}.") end end + class HasManyThroughCantAssociateThroughHasOneOrManyReflection < ThroughCantAssociateThroughHasOneOrManyReflection #:nodoc: + end + + class HasOneThroughCantAssociateThroughHasOneOrManyReflection < ThroughCantAssociateThroughHasOneOrManyReflection #:nodoc: + end + class HasManyThroughCantAssociateNewRecords < ActiveRecordError #:nodoc: def initialize(owner, reflection) super("Cannot associate new records through '#{owner.class.name}##{reflection.name}' on '#{reflection.source_reflection.class_name rescue nil}##{reflection.source_reflection.name rescue nil}'. Both records must have an id in order to create the has_many :through record associating them.") @@ -79,12 +85,18 @@ module ActiveRecord end end - class HasManyThroughNestedAssociationsAreReadonly < ActiveRecordError #:nodoc: + class ThroughNestedAssociationsAreReadonly < ActiveRecordError #:nodoc: def initialize(owner, reflection) super("Cannot modify association '#{owner.class.name}##{reflection.name}' because it goes through more than one other association.") end end + class HasManyThroughNestedAssociationsAreReadonly < ThroughNestedAssociationsAreReadonly #:nodoc: + end + + class HasOneThroughNestedAssociationsAreReadonly < ThroughNestedAssociationsAreReadonly #:nodoc: + end + class EagerLoadPolymorphicError < ActiveRecordError #:nodoc: def initialize(reflection) super("Cannot eagerly load the polymorphic association #{reflection.name.inspect}") @@ -185,7 +197,7 @@ module ActiveRecord super end - # Returns the specified association instance if it responds to :loaded?, nil otherwise. + # Returns the specified association instance if it exists, nil otherwise. def association_instance_get(name) @association_cache[name] end @@ -266,7 +278,6 @@ module ActiveRecord # others.find(*args) | X | X | X # others.exists? | X | X | X # others.distinct | X | X | X - # others.uniq | X | X | X # others.reset | X | X | X # # === Overriding generated methods @@ -285,7 +296,7 @@ module ActiveRecord # end # # If your model class is <tt>Project</tt>, the module is - # named <tt>Project::GeneratedFeatureMethods</tt>. The GeneratedFeatureMethods module is + # named <tt>Project::GeneratedAssociationMethods</tt>. The GeneratedAssociationMethods module is # included in the model class immediately after the (anonymous) generated attributes methods # module, meaning an association will override the methods for an attribute with the same name. # @@ -956,20 +967,16 @@ module ActiveRecord # The +traps+ association on +Dungeon+ and the +dungeon+ association on +Trap+ are # the inverse of each other and the inverse of the +dungeon+ association on +EvilWizard+ # is the +evil_wizard+ association on +Dungeon+ (and vice-versa). By default, - # Active Record doesn't know anything about these inverse relationships and so no object - # loading optimization is possible. For example: + # Active Record can guess the inverse of the association based on the name + # of the class. The result is the following: # # d = Dungeon.first # t = d.traps.first - # d.level == t.dungeon.level # => true - # d.level = 10 - # d.level == t.dungeon.level # => false + # d.object_id == t.dungeon.object_id # => true # # The +Dungeon+ instances +d+ and <tt>t.dungeon</tt> in the above example refer to - # the same object data from the database, but are actually different in-memory copies - # of that data. Specifying the <tt>:inverse_of</tt> option on associations lets you tell - # Active Record about inverse relationships and it will optimise object loading. For - # example, if we changed our model definitions to: + # the same in-memory instance since the association matches the name of the class. + # The result would be the same if we added +:inverse_of+ to our model definitions: # # class Dungeon < ActiveRecord::Base # has_many :traps, inverse_of: :dungeon @@ -984,15 +991,14 @@ module ActiveRecord # belongs_to :dungeon, inverse_of: :evil_wizard # end # - # Then, from our code snippet above, +d+ and <tt>t.dungeon</tt> are actually the same - # in-memory instance and our final <tt>d.level == t.dungeon.level</tt> will return +true+. - # # There are limitations to <tt>:inverse_of</tt> support: # # * does not work with <tt>:through</tt> associations. # * does not work with <tt>:polymorphic</tt> associations. # * for +belongs_to+ associations +has_many+ inverse associations are ignored. # + # For more information, see the documentation for the +:inverse_of+ option. + # # == Deleting from associations # # === Dependent associations @@ -1565,10 +1571,7 @@ module ActiveRecord # # class CreateDevelopersProjectsJoinTable < ActiveRecord::Migration # def change - # create_table :developers_projects, id: false do |t| - # t.integer :developer_id - # t.integer :project_id - # end + # create_join_table :developers, :projects # end # end # @@ -1725,7 +1728,7 @@ module ActiveRecord Builder::HasMany.define_callbacks self, middle_reflection Reflection.add_reflection self, middle_reflection.name, middle_reflection - middle_reflection.parent_reflection = [name.to_s, habtm_reflection] + middle_reflection.parent_reflection = habtm_reflection include Module.new { class_eval <<-RUBY, __FILE__, __LINE__ + 1 @@ -1741,12 +1744,12 @@ module ActiveRecord hm_options[:through] = middle_reflection.name hm_options[:source] = join_model.right_reflection.name - [:before_add, :after_add, :before_remove, :after_remove, :autosave, :validate, :join_table, :class_name].each do |k| + [:before_add, :after_add, :before_remove, :after_remove, :autosave, :validate, :join_table, :class_name, :extend].each do |k| hm_options[k] = options[k] if options.key? k end has_many name, scope, hm_options, &extension - self._reflections[name.to_s].parent_reflection = [name.to_s, habtm_reflection] + self._reflections[name.to_s].parent_reflection = habtm_reflection end end end diff --git a/activerecord/lib/active_record/associations/association.rb b/activerecord/lib/active_record/associations/association.rb index 930f678ae8..c7b396f3d4 100644 --- a/activerecord/lib/active_record/associations/association.rb +++ b/activerecord/lib/active_record/associations/association.rb @@ -211,9 +211,12 @@ module ActiveRecord # the kind of the class of the associated objects. Meant to be used as # a sanity check when you are about to assign an associated record. def raise_on_type_mismatch!(record) - unless record.is_a?(reflection.klass) || record.is_a?(reflection.class_name.constantize) - message = "#{reflection.class_name}(##{reflection.klass.object_id}) expected, got #{record.class}(##{record.class.object_id})" - raise ActiveRecord::AssociationTypeMismatch, message + unless record.is_a?(reflection.klass) + fresh_class = reflection.class_name.safe_constantize + unless fresh_class && record.is_a?(fresh_class) + message = "#{reflection.class_name}(##{reflection.klass.object_id}) expected, got #{record.class}(##{record.class.object_id})" + raise ActiveRecord::AssociationTypeMismatch, message + end end end @@ -248,6 +251,14 @@ module ActiveRecord initialize_attributes(record) end end + + # Returns true if statement cache should be skipped on the association reader. + def skip_statement_cache? + reflection.scope_chain.any?(&:any?) || + scope.eager_loading? || + klass.scope_attributes? || + reflection.source_reflection.active_record.default_scopes.any? + end end end end diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb index 2416167834..a140dc239c 100644 --- a/activerecord/lib/active_record/associations/association_scope.rb +++ b/activerecord/lib/active_record/associations/association_scope.rb @@ -149,6 +149,7 @@ module ActiveRecord scope.where_clause += item.where_clause scope.order_values |= item.order_values + scope.unscope!(*item.unscope_values) end reflection = reflection.next diff --git a/activerecord/lib/active_record/associations/belongs_to_association.rb b/activerecord/lib/active_record/associations/belongs_to_association.rb index 265a65c4c1..260a0c6a2d 100644 --- a/activerecord/lib/active_record/associations/belongs_to_association.rb +++ b/activerecord/lib/active_record/associations/belongs_to_association.rb @@ -107,7 +107,7 @@ module ActiveRecord end def stale_state - result = owner._read_attribute(reflection.foreign_key) + result = owner._read_attribute(reflection.foreign_key) { |n| owner.send(:missing_attribute, n, caller) } result && result.to_s end end diff --git a/activerecord/lib/active_record/associations/builder/association.rb b/activerecord/lib/active_record/associations/builder/association.rb index 88406740d8..ba1b1814d1 100644 --- a/activerecord/lib/active_record/associations/builder/association.rb +++ b/activerecord/lib/active_record/associations/builder/association.rb @@ -16,7 +16,7 @@ module ActiveRecord::Associations::Builder end self.extensions = [] - VALID_OPTIONS = [:class_name, :class, :foreign_key, :validate] # :nodoc: + VALID_OPTIONS = [:class_name, :anonymous_class, :foreign_key, :validate] # :nodoc: def self.build(model, name, scope, options, &block) if model.dangerous_attribute_method?(name) diff --git a/activerecord/lib/active_record/associations/builder/belongs_to.rb b/activerecord/lib/active_record/associations/builder/belongs_to.rb index 97eb007f62..6e4a53f7fb 100644 --- a/activerecord/lib/active_record/associations/builder/belongs_to.rb +++ b/activerecord/lib/active_record/associations/builder/belongs_to.rb @@ -33,16 +33,24 @@ module ActiveRecord::Associations::Builder if (@_after_create_counter_called ||= false) @_after_create_counter_called = false - elsif attribute_changed?(foreign_key) && !new_record? && reflection.constructable? - model = reflection.klass + elsif attribute_changed?(foreign_key) && !new_record? + if reflection.polymorphic? + model = attribute(reflection.foreign_type).try(:constantize) + model_was = attribute_was(reflection.foreign_type).try(:constantize) + else + model = reflection.klass + model_was = reflection.klass + end + foreign_key_was = attribute_was foreign_key foreign_key = attribute foreign_key if foreign_key && model.respond_to?(:increment_counter) model.increment_counter(cache_column, foreign_key) end - if foreign_key_was && model.respond_to?(:decrement_counter) - model.decrement_counter(cache_column, foreign_key_was) + + if foreign_key_was && model_was.respond_to?(:decrement_counter) + model_was.decrement_counter(cache_column, foreign_key_was) end end end diff --git a/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb b/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb index 97b57a6a55..b18d99d54e 100644 --- a/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb +++ b/activerecord/lib/active_record/associations/builder/has_and_belongs_to_many.rb @@ -46,7 +46,7 @@ module ActiveRecord::Associations::Builder join_model = Class.new(ActiveRecord::Base) { class << self; - attr_accessor :class_resolver + attr_accessor :left_model attr_accessor :name attr_accessor :table_name_resolver attr_accessor :left_reflection @@ -58,7 +58,7 @@ module ActiveRecord::Associations::Builder end def self.compute_type(class_name) - class_resolver.compute_type class_name + left_model.compute_type class_name end def self.add_left_association(name, options) @@ -72,13 +72,17 @@ module ActiveRecord::Associations::Builder self.right_reflection = _reflect_on_association(rhs_name) end + def self.retrieve_connection + left_model.retrieve_connection + end + } join_model.name = "HABTM_#{association_name.to_s.camelize}" join_model.table_name_resolver = habtm - join_model.class_resolver = lhs_model + join_model.left_model = lhs_model - join_model.add_left_association :left_side, class: lhs_model + join_model.add_left_association :left_side, anonymous_class: lhs_model join_model.add_right_association association_name, belongs_to_options(options) join_model end diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb index 6caadb4ce8..256df3ca11 100644 --- a/activerecord/lib/active_record/associations/collection_association.rb +++ b/activerecord/lib/active_record/associations/collection_association.rb @@ -1,3 +1,5 @@ +require "active_support/deprecation" + module ActiveRecord module Associations # = Active Record Association Collection @@ -28,6 +30,12 @@ module ActiveRecord # Implements the reader method, e.g. foo.items for Foo.has_many :items def reader(force_reload = false) if force_reload + ActiveSupport::Deprecation.warn(<<-MSG.squish) + Passing an argument to force an association to reload is now + deprecated and will be removed in Rails 5.1. Please call `reload` + on the result collection proxy instead. + MSG + klass.uncached { reload } elsif stale_target? reload @@ -54,8 +62,10 @@ module ActiveRecord record.send(reflection.association_primary_key) end else - column = "#{reflection.quoted_table_name}.#{reflection.association_primary_key}" - scope.pluck(column) + @association_ids ||= ( + column = "#{reflection.quoted_table_name}.#{reflection.association_primary_key}" + scope.pluck(column) + ) end end @@ -432,12 +442,7 @@ module ActiveRecord private def get_records - if reflection.scope_chain.any?(&:any?) || - scope.eager_loading? || - klass.scope_attributes? - - return scope.to_a - end + return scope.to_a if skip_statement_cache? conn = klass.connection sc = reflection.association_scope_cache(conn, owner) do diff --git a/activerecord/lib/active_record/associations/collection_proxy.rb b/activerecord/lib/active_record/associations/collection_proxy.rb index 685c3a5f17..b5a8c81fe4 100644 --- a/activerecord/lib/active_record/associations/collection_proxy.rb +++ b/activerecord/lib/active_record/associations/collection_proxy.rb @@ -470,15 +470,16 @@ module ActiveRecord @association.destroy_all end - # Deletes the +records+ supplied and removes them from the collection. For - # +has_many+ associations, the deletion is done according to the strategy - # specified by the <tt>:dependent</tt> option. Returns an array with the + # Deletes the +records+ supplied from the collection according to the strategy + # specified by the +:dependent+ option. If no +:dependent+ option is given, + # then it will follow the default strategy. Returns an array with the # deleted records. # - # If no <tt>:dependent</tt> option is given, then it will follow the default - # strategy. The default strategy is <tt>:nullify</tt>. This sets the foreign - # keys to <tt>NULL</tt>. For, +has_many+ <tt>:through</tt>, the default - # strategy is +delete_all+. + # For +has_many :through+ associations, the default deletion strategy is + # +:delete_all+. + # + # For +has_many+ associations, the default deletion strategy is +:nullify+. + # This sets the foreign keys to +NULL+. # # class Person < ActiveRecord::Base # has_many :pets # dependent: :nullify option by default @@ -780,7 +781,7 @@ module ActiveRecord # person.pets.any? # => false # # person.pets << Pet.new(name: 'Snoop') - # person.pets.count # => 0 + # person.pets.count # => 1 # person.pets.any? # => true # # You can also pass a +block+ to define criteria. The behavior @@ -970,7 +971,7 @@ module ActiveRecord alias_method :append, :<< def prepend(*args) - raise NoMethodError, "prepend on association is not defined. Please use << or append" + raise NoMethodError, "prepend on association is not defined. Please use <<, push or append" end # Equivalent to +delete_all+. The difference is that returns +self+, instead diff --git a/activerecord/lib/active_record/associations/has_many_association.rb b/activerecord/lib/active_record/associations/has_many_association.rb index ca27c9fdde..9f6c832c1b 100644 --- a/activerecord/lib/active_record/associations/has_many_association.rb +++ b/activerecord/lib/active_record/associations/has_many_association.rb @@ -16,7 +16,14 @@ module ActiveRecord when :restrict_with_error unless empty? record = klass.human_attribute_name(reflection.name).downcase - owner.errors.add(:base, :"restrict_dependent_destroy.many", record: record) + message = owner.errors.generate_message(:base, :'restrict_dependent_destroy.many', record: record, raise: true) rescue nil + if message + ActiveSupport::Deprecation.warn(<<-MESSAGE.squish) + The error key `:'restrict_dependent_destroy.many'` has been deprecated and will be removed in Rails 5.1. + Please use `:'restrict_dependent_destroy.has_many'` instead. + MESSAGE + end + owner.errors.add(:base, message || :'restrict_dependent_destroy.has_many', record: record) throw(:abort) end diff --git a/activerecord/lib/active_record/associations/has_many_through_association.rb b/activerecord/lib/active_record/associations/has_many_through_association.rb index 29e8a0edc1..1aa6a2ca74 100644 --- a/activerecord/lib/active_record/associations/has_many_through_association.rb +++ b/activerecord/lib/active_record/associations/has_many_through_association.rb @@ -38,12 +38,10 @@ module ActiveRecord def insert_record(record, validate = true, raise = false) ensure_not_nested - if record.new_record? - if raise - record.save!(:validate => validate) - else - return unless record.save(:validate => validate) - end + if raise + record.save!(:validate => validate) + else + return unless record.save(:validate => validate) end save_through_record(record) @@ -135,7 +133,7 @@ module ActiveRecord if scope.klass.primary_key count = scope.destroy_all.length else - scope.each { |record| record.run_callbacks :destroy } + scope.each(&:_run_destroy_callbacks) arel = scope.arel diff --git a/activerecord/lib/active_record/associations/has_one_association.rb b/activerecord/lib/active_record/associations/has_one_association.rb index 41a75b820e..5a92bc5e8a 100644 --- a/activerecord/lib/active_record/associations/has_one_association.rb +++ b/activerecord/lib/active_record/associations/has_one_association.rb @@ -12,7 +12,14 @@ module ActiveRecord when :restrict_with_error if load_target record = klass.human_attribute_name(reflection.name).downcase - owner.errors.add(:base, :"restrict_dependent_destroy.one", record: record) + message = owner.errors.generate_message(:base, :'restrict_dependent_destroy.one', record: record, raise: true) rescue nil + if message + ActiveSupport::Deprecation.warn(<<-MESSAGE.squish) + The error key `:'restrict_dependent_destroy.one'` has been deprecated and will be removed in Rails 5.1. + Please use `:'restrict_dependent_destroy.has_one'` instead. + MESSAGE + end + owner.errors.add(:base, message || :'restrict_dependent_destroy.has_one', record: record) throw(:abort) end diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index 97f4bd3811..6ecc741195 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -10,13 +10,13 @@ module ActiveRecord # end # # class Book < ActiveRecord::Base - # # columns: title, sales + # # columns: title, sales, author_id # end # # When you load an author with all associated books Active Record will make # multiple queries like this: # - # Author.includes(:books).where(:name => ['bell hooks', 'Homer').to_a + # Author.includes(:books).where(name: ['bell hooks', 'Homer']).to_a # # => SELECT `authors`.* FROM `authors` WHERE `name` IN ('bell hooks', 'Homer') # => SELECT `books`.* FROM `books` WHERE `author_id` IN (2, 5) @@ -160,7 +160,7 @@ module ActiveRecord h end - class AlreadyLoaded + class AlreadyLoaded # :nodoc: attr_reader :owners, :reflection def initialize(klass, owners, reflection, preload_scope) @@ -175,7 +175,7 @@ module ActiveRecord end end - class NullPreloader + class NullPreloader # :nodoc: def self.new(klass, owners, reflection, preload_scope); self; end def self.run(preloader); end def self.preloaded_records; []; end diff --git a/activerecord/lib/active_record/associations/singular_association.rb b/activerecord/lib/active_record/associations/singular_association.rb index 58d0f7d65d..03cb8cb8c3 100644 --- a/activerecord/lib/active_record/associations/singular_association.rb +++ b/activerecord/lib/active_record/associations/singular_association.rb @@ -1,9 +1,17 @@ +require "active_support/deprecation" + module ActiveRecord module Associations class SingularAssociation < Association #:nodoc: # Implements the reader method, e.g. foo.bar for Foo.has_one :bar def reader(force_reload = false) - if force_reload + if force_reload && klass + ActiveSupport::Deprecation.warn(<<-MSG.squish) + Passing an argument to force an association to reload is now + deprecated and will be removed in Rails 5.1. Please call `reload` + on the parent object instead. + MSG + klass.uncached { reload } elsif !loaded? || stale_target? reload @@ -39,12 +47,7 @@ module ActiveRecord end def get_records - if reflection.scope_chain.any?(&:any?) || - scope.eager_loading? || - klass.scope_attributes? - - return scope.limit(1).to_a - end + return scope.limit(1).to_a if skip_statement_cache? conn = klass.connection sc = reflection.association_scope_cache(conn, owner) do diff --git a/activerecord/lib/active_record/associations/through_association.rb b/activerecord/lib/active_record/associations/through_association.rb index af1bce523c..d0ec3e8015 100644 --- a/activerecord/lib/active_record/associations/through_association.rb +++ b/activerecord/lib/active_record/associations/through_association.rb @@ -15,12 +15,6 @@ module ActiveRecord scope = super reflection.chain.drop(1).each do |reflection| relation = reflection.klass.all - - reflection_scope = reflection.scope - if reflection_scope && reflection_scope.arity.zero? - relation = relation.merge(reflection_scope) - end - scope.merge!( relation.except(:select, :create_with, :includes, :preload, :joins, :eager_load) ) @@ -82,13 +76,21 @@ module ActiveRecord def ensure_mutable unless source_reflection.belongs_to? - raise HasManyThroughCantAssociateThroughHasOneOrManyReflection.new(owner, reflection) + if reflection.has_one? + raise HasOneThroughCantAssociateThroughHasOneOrManyReflection.new(owner, reflection) + else + raise HasManyThroughCantAssociateThroughHasOneOrManyReflection.new(owner, reflection) + end end end def ensure_not_nested if reflection.nested? - raise HasManyThroughNestedAssociationsAreReadonly.new(owner, reflection) + if reflection.has_one? + raise HasOneThroughNestedAssociationsAreReadonly.new(owner, reflection) + else + raise HasManyThroughNestedAssociationsAreReadonly.new(owner, reflection) + end end end diff --git a/activerecord/lib/active_record/attribute/user_provided_default.rb b/activerecord/lib/active_record/attribute/user_provided_default.rb new file mode 100644 index 0000000000..e0bee8c17e --- /dev/null +++ b/activerecord/lib/active_record/attribute/user_provided_default.rb @@ -0,0 +1,32 @@ +require 'active_record/attribute' + +module ActiveRecord + class Attribute # :nodoc: + class UserProvidedDefault < FromUser + def initialize(name, value, type, database_default) + super(name, value, type) + @database_default = database_default + end + + def type_cast(value) + if value.is_a?(Proc) + super(value.call) + else + super + end + end + + def changed_in_place_from?(old_value) + super || changed_from?(database_default.value) + end + + def with_type(type) + self.class.new(name, value_before_type_cast, type, database_default) + end + + protected + + attr_reader :database_default + end + end +end diff --git a/activerecord/lib/active_record/attribute_assignment.rb b/activerecord/lib/active_record/attribute_assignment.rb index cc265e2af6..45fdcaa1cd 100644 --- a/activerecord/lib/active_record/attribute_assignment.rb +++ b/activerecord/lib/active_record/attribute_assignment.rb @@ -29,7 +29,8 @@ module ActiveRecord assign_multiparameter_attributes(multi_parameter_attributes) unless multi_parameter_attributes.empty? end - # Re-raise with the ActiveRecord constant in case of an error + # Tries to assign given value to given attribute. + # In case of an error, re-raises with the ActiveRecord constant. def _assign_attribute(k, v) # :nodoc: super rescue ActiveModel::UnknownAttributeError diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index 9d58a19304..0862306749 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -42,7 +42,7 @@ module ActiveRecord def [](name) @method_cache.compute_if_absent(name) do - safe_name = name.unpack('h*').first + safe_name = name.unpack('h*'.freeze).first temp_method = "__temp__#{safe_name}" ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name @module.module_eval method_body(temp_method, safe_name), __FILE__, __LINE__ @@ -230,7 +230,15 @@ module ActiveRecord # person.respond_to(:nothing) # => false def respond_to?(name, include_private = false) return false unless super - name = name.to_s + + case name + when :to_partial_path + name = "to_partial_path".freeze + when :to_model + name = "to_model".freeze + else + name = name.to_s + end # If the result is true then check for the select case. # For queries selecting a subset of columns, return false for unselected columns. @@ -377,27 +385,27 @@ module ActiveRecord # # For example: # - # class PostsController < ActionController::Base - # after_action :print_accessed_fields, only: :index + # class PostsController < ActionController::Base + # after_action :print_accessed_fields, only: :index # - # def index - # @posts = Post.all - # end + # def index + # @posts = Post.all + # end # - # private + # private # - # def print_accessed_fields - # p @posts.first.accessed_fields + # def print_accessed_fields + # p @posts.first.accessed_fields + # end # end - # end # # Which allows you to quickly change your code to: # - # class PostsController < ActionController::Base - # def index - # @posts = Post.select(:id, :title, :author_id, :updated_at) + # class PostsController < ActionController::Base + # def index + # @posts = Post.select(:id, :title, :author_id, :updated_at) + # end # end - # end def accessed_fields @attributes.accessed end diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb index 7ba907f786..0171ef3bdf 100644 --- a/activerecord/lib/active_record/attribute_methods/dirty.rb +++ b/activerecord/lib/active_record/attribute_methods/dirty.rb @@ -108,6 +108,7 @@ module ActiveRecord end def save_changed_attribute(attr, old_value) + clear_changed_attributes_cache if attribute_changed_by_setter?(attr) clear_attribute_changes(attr) unless _field_changed?(attr, old_value) else @@ -176,7 +177,11 @@ module ActiveRecord @cached_changed_attributes = changed_attributes yield ensure - remove_instance_variable(:@cached_changed_attributes) + clear_changed_attributes_cache + end + + def clear_changed_attributes_cache + remove_instance_variable(:@cached_changed_attributes) if defined?(@cached_changed_attributes) end end end diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb index 0d989c2eca..2363cf7608 100644 --- a/activerecord/lib/active_record/attribute_methods/read.rb +++ b/activerecord/lib/active_record/attribute_methods/read.rb @@ -37,7 +37,7 @@ module ActiveRecord protected def define_method_attribute(name) - safe_name = name.unpack('h*').first + safe_name = name.unpack('h*'.freeze).first temp_method = "__temp__#{safe_name}" ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb index d0d8a968c5..60eecab0d0 100644 --- a/activerecord/lib/active_record/attribute_methods/serialization.rb +++ b/activerecord/lib/active_record/attribute_methods/serialization.rb @@ -11,6 +11,18 @@ module ActiveRecord # serialized object must be of that class on assignment and retrieval. # Otherwise <tt>SerializationTypeMismatch</tt> will be raised. # + # Empty objects as <tt>{}</tt>, in the case of +Hash+, or <tt>[]</tt>, in the case of + # +Array+, will always be persisted as null. + # + # Keep in mind that database adapters handle certain serialization tasks + # for you. For instance: +json+ and +jsonb+ types in PostgreSQL will be + # converted between JSON object/array syntax and Ruby +Hash+ or +Array+ + # objects transparently. There is no need to use +serialize+ in this + # case. + # + # For more complex cases, such as conversion to or from your application + # domain objects, consider using the ActiveRecord::Attributes API. + # # ==== Parameters # # * +attr_name+ - The field name that should be serialized. diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb index ab017c7b54..07d5e7d38e 100644 --- a/activerecord/lib/active_record/attribute_methods/write.rb +++ b/activerecord/lib/active_record/attribute_methods/write.rb @@ -24,7 +24,7 @@ module ActiveRecord protected def define_method_attribute=(name) - safe_name = name.unpack('h*').first + safe_name = name.unpack('h*'.freeze).first ActiveRecord::AttributeMethods::AttrNames.set_name_cache safe_name, name generated_attribute_methods.module_eval <<-STR, __FILE__, __LINE__ + 1 diff --git a/activerecord/lib/active_record/attributes.rb b/activerecord/lib/active_record/attributes.rb index 50339b6f69..8b2c4c7170 100644 --- a/activerecord/lib/active_record/attributes.rb +++ b/activerecord/lib/active_record/attributes.rb @@ -1,3 +1,5 @@ +require 'active_record/attribute/user_provided_default' + module ActiveRecord # See ActiveRecord::Attributes::ClassMethods for documentation module Attributes @@ -80,6 +82,14 @@ module ActiveRecord # # StoreListing.new.my_string # => "new default" # + # class Product < ActiveRecord::Base + # attribute :my_default_proc, :datetime, default: -> { Time.now } + # end + # + # Product.new.my_default_proc # => 2015-05-30 11:04:48 -0600 + # sleep 1 + # Product.new.my_default_proc # => 2015-05-30 11:04:49 -0600 + # # Attributes do not need to be backed by a database column. # # class MyModel < ActiveRecord::Base @@ -202,7 +212,8 @@ module ActiveRecord # # +default+ The default value to use when no value is provided. If this option # is not passed, the previous default value (if any) will be used. - # Otherwise, the default will be +nil+. + # Otherwise, the default will be +nil+. A proc can also be passed, and + # will be called once each time a new value is needed. # # +user_provided_default+ Whether the default value should be cast using # +cast+ or +deserialize+. @@ -236,7 +247,12 @@ module ActiveRecord if value == NO_DEFAULT_PROVIDED default_attribute = _default_attributes[name].with_type(type) elsif from_user - default_attribute = Attribute.from_user(name, value, type) + default_attribute = Attribute::UserProvidedDefault.new( + name, + value, + type, + _default_attributes[name], + ) else default_attribute = Attribute.from_database(name, value, type) end diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb index 0792d19c3e..dbb0e2fab2 100644 --- a/activerecord/lib/active_record/autosave_association.rb +++ b/activerecord/lib/active_record/autosave_association.rb @@ -222,6 +222,7 @@ module ActiveRecord true end validate validation_method + after_validation :_ensure_no_duplicate_errors end end end @@ -324,7 +325,7 @@ module ActiveRecord # the parent, <tt>self</tt>, if it wasn't. Skips any <tt>:autosave</tt> # enabled records if they're marked_for_destruction? or destroyed. def association_valid?(reflection, record) - return true if record.destroyed? || record.marked_for_destruction? + return true if record.destroyed? || (reflection.options[:autosave] && record.marked_for_destruction?) validation_context = self.validation_context unless [:create, :update].include?(self.validation_context) unless valid = record.valid?(validation_context) @@ -456,5 +457,11 @@ module ActiveRecord end end end + + def _ensure_no_duplicate_errors + errors.messages.each_key do |attribute| + errors[attribute].uniq! + end + end end end diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb index 67490ecd97..55a7e053bc 100644 --- a/activerecord/lib/active_record/base.rb +++ b/activerecord/lib/active_record/base.rb @@ -5,7 +5,6 @@ require 'active_support/dependencies' require 'active_support/descendants_tracker' require 'active_support/time' require 'active_support/core_ext/module/attribute_accessors' -require 'active_support/core_ext/class/delegating_attributes' require 'active_support/core_ext/array/extract_options' require 'active_support/core_ext/hash/deep_merge' require 'active_support/core_ext/hash/slice' @@ -120,23 +119,22 @@ module ActiveRecord #:nodoc: # All column values are automatically available through basic accessors on the Active Record # object, but sometimes you want to specialize this behavior. This can be done by overwriting # the default accessors (using the same name as the attribute) and calling - # <tt>read_attribute(attr_name)</tt> and <tt>write_attribute(attr_name, value)</tt> to actually - # change things. + # +super+ to actually change things. # # class Song < ActiveRecord::Base # # Uses an integer of seconds to hold the length of the song # # def length=(minutes) - # write_attribute(:length, minutes.to_i * 60) + # super(minutes.to_i * 60) # end # # def length - # read_attribute(:length) / 60 + # super / 60 # end # end # # You can alternatively use <tt>self[:attribute]=(value)</tt> and <tt>self[:attribute]</tt> - # instead of <tt>write_attribute(:attribute, value)</tt> and <tt>read_attribute(:attribute)</tt>. + # or <tt>write_attribute(:attribute, value)</tt> and <tt>read_attribute(:attribute)</tt>. # # == Attribute query methods # @@ -282,6 +280,7 @@ module ActiveRecord #:nodoc: extend Explain extend Enum extend Delegation::DelegateCache + extend CollectionCacheKey include Core include Persistence diff --git a/activerecord/lib/active_record/callbacks.rb b/activerecord/lib/active_record/callbacks.rb index 2fcba8e309..ccdbebbc77 100644 --- a/activerecord/lib/active_record/callbacks.rb +++ b/activerecord/lib/active_record/callbacks.rb @@ -194,7 +194,7 @@ module ActiveRecord # # If the +before_validation+ callback throws +:abort+, the process will be # aborted and <tt>Base#save</tt> will return +false+. If Base#save! is called it will raise a - # ActiveRecord::RecordInvalid exception. Nothing will be appended to the errors object. + # <tt>ActiveRecord::RecordInvalid</tt> exception. Nothing will be appended to the errors object. # # == Canceling callbacks # @@ -206,7 +206,8 @@ module ActiveRecord # == Ordering callbacks # # Sometimes the code needs that the callbacks execute in a specific order. For example, a +before_destroy+ - # callback (+log_children+ in this case) should be executed before the children get destroyed by the +dependent: destroy+ option. + # callback (+log_children+ in this case) should be executed before the children get destroyed by the + # <tt>dependent: destroy</tt> option. # # Let's look at the code below: # @@ -289,24 +290,28 @@ module ActiveRecord end def destroy #:nodoc: - run_callbacks(:destroy) { super } + _run_destroy_callbacks { super } + rescue RecordNotDestroyed => e + @_association_destroy_exception = e + false end def touch(*) #:nodoc: - run_callbacks(:touch) { super } + _run_touch_callbacks { super } end private + def create_or_update(*) #:nodoc: - run_callbacks(:save) { super } + _run_save_callbacks { super } end def _create_record #:nodoc: - run_callbacks(:create) { super } + _run_create_callbacks { super } end def _update_record(*) #:nodoc: - run_callbacks(:update) { super } + _run_update_callbacks { super } end end end diff --git a/activerecord/lib/active_record/collection_cache_key.rb b/activerecord/lib/active_record/collection_cache_key.rb new file mode 100644 index 0000000000..3c4ca3d116 --- /dev/null +++ b/activerecord/lib/active_record/collection_cache_key.rb @@ -0,0 +1,31 @@ +module ActiveRecord + module CollectionCacheKey + + def collection_cache_key(collection = all, timestamp_column = :updated_at) # :nodoc: + query_signature = Digest::MD5.hexdigest(collection.to_sql) + key = "#{collection.model_name.cache_key}/query-#{query_signature}" + + if collection.loaded? + size = collection.size + timestamp = collection.max_by(×tamp_column).public_send(timestamp_column) + else + column_type = type_for_attribute(timestamp_column.to_s) + column = "#{connection.quote_table_name(collection.table_name)}.#{connection.quote_column_name(timestamp_column)}" + + query = collection + .select("COUNT(*) AS size", "MAX(#{column}) AS timestamp") + .unscope(:order) + result = connection.select_one(query) + + size = result["size"] + timestamp = column_type.deserialize(result["timestamp"]) + end + + if timestamp + "#{key}-#{size}-#{timestamp.utc.to_s(cache_timestamp_format)}" + else + "#{key}-#{size}" + end + end + end +end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb index 8c50f3d1a3..282af220fb 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -1,7 +1,6 @@ require 'thread' require 'thread_safe' require 'monitor' -require 'set' module ActiveRecord # Raised when a connection could not be obtained within the connection @@ -10,6 +9,12 @@ module ActiveRecord class ConnectionTimeoutError < ConnectionNotEstablished end + # Raised when a pool was unable to get ahold of all its connections + # to perform a "group" action such as +ConnectionPool#disconnect!+ + # or +ConnectionPool#clear_reloadable_connections!+. + class ExclusiveConnectionTimeoutError < ConnectionTimeoutError + end + module ConnectionAdapters # Connection pool base class for managing Active Record database # connections. @@ -63,6 +68,15 @@ module ActiveRecord # connection at the end of a thread or a thread dies unexpectedly. # Regardless of this setting, the Reaper will be invoked before every # blocking wait. (Default nil, which means don't schedule the Reaper). + # + #-- + # Synchronization policy: + # * all public methods can be called outside +synchronize+ + # * access to these i-vars needs to be in +synchronize+: + # * @connections + # * @now_connecting + # * private methods that require being called in a +synchronize+ blocks + # are now explicitly documented class ConnectionPool # Threadsafe, fair, FIFO queue. Meant to be used by ConnectionPool # with which it shares a Monitor. But could be a generic Queue. @@ -129,17 +143,15 @@ module ActiveRecord # - ConnectionTimeoutError if +timeout+ is given and no element # becomes available within +timeout+ seconds, def poll(timeout = nil) - synchronize do - if timeout - no_wait_poll || wait_poll(timeout) - else - no_wait_poll - end - end + synchronize { internal_poll(timeout) } end private + def internal_poll(timeout) + no_wait_poll || (timeout && wait_poll(timeout)) + end + def synchronize(&block) @lock.synchronize(&block) end @@ -193,6 +205,80 @@ module ActiveRecord end end + # Adds the ability to turn a basic fair FIFO queue into one + # biased to some thread. + module BiasableQueue # :nodoc: + class BiasedConditionVariable # :nodoc: + # semantics of condition variables guarantee that +broadcast+, +broadcast_on_biased+, + # +signal+ and +wait+ methods are only called while holding a lock + def initialize(lock, other_cond, preferred_thread) + @real_cond = lock.new_cond + @other_cond = other_cond + @preferred_thread = preferred_thread + @num_waiting_on_real_cond = 0 + end + + def broadcast + broadcast_on_biased + @other_cond.broadcast + end + + def broadcast_on_biased + @num_waiting_on_real_cond = 0 + @real_cond.broadcast + end + + def signal + if @num_waiting_on_real_cond > 0 + @num_waiting_on_real_cond -= 1 + @real_cond + else + @other_cond + end.signal + end + + def wait(timeout) + if Thread.current == @preferred_thread + @num_waiting_on_real_cond += 1 + @real_cond + else + @other_cond + end.wait(timeout) + end + end + + def with_a_bias_for(thread) + previous_cond = nil + new_cond = nil + synchronize do + previous_cond = @cond + @cond = new_cond = BiasedConditionVariable.new(@lock, @cond, thread) + end + yield + ensure + synchronize do + @cond = previous_cond if previous_cond + new_cond.broadcast_on_biased if new_cond # wake up any remaining sleepers + end + end + end + + # Connections must be leased while holding the main pool mutex. This is + # an internal subclass that also +.leases+ returned connections while + # still in queue's critical section (queue synchronizes with the same + # +@lock+ as the main pool) so that a returned connection is already + # leased and there is no need to re-enter synchronized block. + class ConnectionLeasingQueue < Queue # :nodoc: + include BiasableQueue + + private + def internal_poll(timeout) + conn = super + conn.lease if conn + conn + end + end + # Every +frequency+ seconds, the reaper will call +reap+ on +pool+. # A reaper instantiated with a nil frequency will never reap the # connection pool. @@ -220,7 +306,7 @@ module ActiveRecord include MonitorMixin - attr_accessor :automatic_reconnect, :checkout_timeout + attr_accessor :automatic_reconnect, :checkout_timeout, :schema_cache attr_reader :spec, :connections, :size, :reaper # Creates a new ConnectionPool object. +spec+ is a ConnectionSpecification @@ -241,56 +327,75 @@ module ActiveRecord # default max pool size to 5 @size = (spec.config[:pool] && spec.config[:pool].to_i) || 5 - # The cache of reserved connections mapped to threads - @reserved_connections = ThreadSafe::Cache.new(:initial_capacity => @size) + # The cache of threads mapped to reserved connections, the sole purpose + # of the cache is to speed-up +connection+ method, it is not the authoritative + # registry of which thread owns which connection, that is tracked by + # +connection.owner+ attr on each +connection+ instance. + # The invariant works like this: if there is mapping of +thread => conn+, + # then that +thread+ does indeed own that +conn+, however an absence of a such + # mapping does not mean that the +thread+ doesn't own the said connection, in + # that case +conn.owner+ attr should be consulted. + # Access and modification of +@thread_cached_conns+ does not require + # synchronization. + @thread_cached_conns = ThreadSafe::Cache.new(:initial_capacity => @size) @connections = [] @automatic_reconnect = true - @available = Queue.new self + # Connection pool allows for concurrent (outside the main `synchronize` section) + # establishment of new connections. This variable tracks the number of threads + # currently in the process of independently establishing connections to the DB. + @now_connecting = 0 + + # A boolean toggle that allows/disallows new connections. + @new_cons_enabled = true + + @available = ConnectionLeasingQueue.new self end # Retrieve the connection associated with the current thread, or call # #checkout to obtain one if necessary. # # #connection can be called any number of times; the connection is - # held in a hash keyed by the thread id. + # held in a cache keyed by a thread. def connection - # this is correctly done double-checked locking - # (ThreadSafe::Cache's lookups have volatile semantics) - @reserved_connections[current_connection_id] || synchronize do - @reserved_connections[current_connection_id] ||= checkout - end + @thread_cached_conns[connection_cache_key(Thread.current)] ||= checkout end # Is there an open connection that is being used for the current thread? + # + # This method only works for connections that have been abtained through + # #connection or #with_connection methods, connections obtained through + # #checkout will not be detected by #active_connection? def active_connection? - synchronize do - @reserved_connections.fetch(current_connection_id) { - return false - }.in_use? - end + @thread_cached_conns[connection_cache_key(Thread.current)] end # Signal that the thread is finished with the current connection. # #release_connection releases the connection-thread association # and returns the connection to the pool. - def release_connection(with_id = current_connection_id) - synchronize do - conn = @reserved_connections.delete(with_id) - checkin conn if conn + # + # This method only works for connections that have been obtained through + # #connection or #with_connection methods, connections obtained through + # #checkout will not be automatically released. + def release_connection(owner_thread = Thread.current) + if conn = @thread_cached_conns.delete(connection_cache_key(owner_thread)) + checkin conn end end - # If a connection already exists yield it to the block. If no connection + # If a connection obtained through #connection or #with_connection methods + # already exists yield it to the block. If no such connection # exists checkout a connection, yield it to the block, and checkin the # connection when finished. def with_connection - connection_id = current_connection_id - fresh_connection = true unless active_connection? - yield connection + unless conn = @thread_cached_conns[connection_cache_key(Thread.current)] + conn = connection + fresh_connection = true + end + yield conn ensure - release_connection(connection_id) if fresh_connection + release_connection if fresh_connection end # Returns true if a connection has already been opened. @@ -299,32 +404,81 @@ module ActiveRecord end # Disconnects all connections in the pool, and clears the pool. - def disconnect! - synchronize do - @reserved_connections.clear - @connections.each do |conn| - checkin conn - conn.disconnect! + # + # Raises: + # - +ExclusiveConnectionTimeoutError+ if unable to gain ownership of all + # connections in the pool within a timeout interval (default duration is + # +spec.config[:checkout_timeout] * 2+ seconds). + def disconnect(raise_on_acquisition_timeout = true) + with_exclusively_acquired_all_connections(raise_on_acquisition_timeout) do + synchronize do + @connections.each do |conn| + checkin conn + conn.disconnect! + end + @connections = [] + @available.clear end - @connections = [] - @available.clear end end - # Clears the cache which maps classes. - def clear_reloadable_connections! - synchronize do - @reserved_connections.clear - @connections.each do |conn| - checkin conn - conn.disconnect! if conn.requires_reloading? - end - @connections.delete_if(&:requires_reloading?) - @available.clear - @connections.each do |conn| - @available.add conn + # Disconnects all connections in the pool, and clears the pool. + # + # The pool first tries to gain ownership of all connections, if unable to + # do so within a timeout interval (default duration is + # +spec.config[:checkout_timeout] * 2+ seconds), the pool is forcefully + # disconneted wihout any regard for other connection owning threads. + def disconnect! + disconnect(false) + end + + # Clears the cache which maps classes and re-connects connections that + # require reloading. + # + # Raises: + # - +ExclusiveConnectionTimeoutError+ if unable to gain ownership of all + # connections in the pool within a timeout interval (default duration is + # +spec.config[:checkout_timeout] * 2+ seconds). + def clear_reloadable_connections(raise_on_acquisition_timeout = true) + num_new_conns_required = 0 + + with_exclusively_acquired_all_connections(raise_on_acquisition_timeout) do + synchronize do + @connections.each do |conn| + checkin conn + conn.disconnect! if conn.requires_reloading? + end + @connections.delete_if(&:requires_reloading?) + + @available.clear + + if @connections.size < @size + # because of the pruning done by this method, we might be running + # low on connections, while threads stuck in queue are helpless + # (not being able to establish new connections for themselves), + # see also more detailed explanation in +remove+ + num_new_conns_required = num_waiting_in_queue - @connections.size + end + + @connections.each do |conn| + @available.add conn + end end end + + bulk_make_new_connections(num_new_conns_required) if num_new_conns_required > 0 + end + + # Clears the cache which maps classes and re-connects connections that + # require reloading. + # + # The pool first tries to gain ownership of all connections, if unable to + # do so within a timeout interval (default duration is + # +spec.config[:checkout_timeout] * 2+ seconds), the pool forcefully + # clears the cache and reloads connections without any regard for other + # connection owning threads. + def clear_reloadable_connections! + clear_reloadable_connections(false) end # Check-out a database connection from the pool, indicating that you want @@ -341,12 +495,8 @@ module ActiveRecord # # Raises: # - ConnectionTimeoutError: no connection can be obtained from the pool. - def checkout - synchronize do - conn = acquire_connection - conn.lease - checkout_and_verify(conn) - end + def checkout(checkout_timeout = @checkout_timeout) + checkout_and_verify(acquire_connection(checkout_timeout)) end # Check-in a database connection back into the pool, indicating that you @@ -356,14 +506,12 @@ module ActiveRecord # calling +checkout+ on this pool. def checkin(conn) synchronize do - owner = conn.owner + remove_connection_from_thread_cache conn - conn.run_callbacks :checkin do + conn._run_checkin_callbacks do conn.expire end - release conn, owner - @available.add conn end end @@ -371,14 +519,32 @@ module ActiveRecord # Remove a connection from the connection pool. The connection will # remain open and active but will no longer be managed by this pool. def remove(conn) + needs_new_connection = false + synchronize do + remove_connection_from_thread_cache conn + @connections.delete conn @available.delete conn - release conn, conn.owner - - @available.add checkout_new_connection if @available.any_waiting? + # @available.any_waiting? => true means that prior to removing this + # conn, the pool was at its max size (@connections.size == @size) + # this would mean that any threads stuck waiting in the queue wouldn't + # know they could checkout_new_connection, so let's do it for them. + # Because condition-wait loop is encapsulated in the Queue class + # (that in turn is oblivious to ConnectionPool implementation), threads + # that are "stuck" there are helpless, they have no way of creating + # new connections and are completely reliant on us feeding available + # connections into the Queue. + needs_new_connection = @available.any_waiting? end + + # This is intentionally done outside of the synchronized section as we + # would like not to hold the main mutex while checking out new connections, + # thus there is some chance that needs_new_connection information is now + # stale, we can live with that (bulk_make_new_connections will make + # sure not to exceed the pool's @size limit). + bulk_make_new_connections(1) if needs_new_connection end # Recover lost connections for the pool. A lost connection can occur if @@ -403,7 +569,118 @@ module ActiveRecord end end + def num_waiting_in_queue # :nodoc: + @available.num_waiting + end + private + #-- + # this is unfortunately not concurrent + def bulk_make_new_connections(num_new_conns_needed) + num_new_conns_needed.times do + # try_to_checkout_new_connection will not exceed pool's @size limit + if new_conn = try_to_checkout_new_connection + # make the new_conn available to the starving threads stuck @available Queue + checkin(new_conn) + end + end + end + + #-- + # From the discussion on Github: + # https://github.com/rails/rails/pull/14938#commitcomment-6601951 + # This hook-in method allows for easier monkey-patching fixes needed by + # JRuby users that use Fibers. + def connection_cache_key(thread) + thread + end + + # Take control of all existing connections so a "group" action such as + # reload/disconnect can be performed safely. It is no longer enough to + # wrap it in +synchronize+ because some pool's actions are allowed + # to be performed outside of the main +synchronize+ block. + def with_exclusively_acquired_all_connections(raise_on_acquisition_timeout = true) + with_new_connections_blocked do + attempt_to_checkout_all_existing_connections(raise_on_acquisition_timeout) + yield + end + end + + def attempt_to_checkout_all_existing_connections(raise_on_acquisition_timeout = true) + collected_conns = synchronize do + # account for our own connections + @connections.select {|conn| conn.owner == Thread.current} + end + + newly_checked_out = [] + timeout_time = Time.now + (@checkout_timeout * 2) + + @available.with_a_bias_for(Thread.current) do + while true + synchronize do + return if collected_conns.size == @connections.size && @now_connecting == 0 + remaining_timeout = timeout_time - Time.now + remaining_timeout = 0 if remaining_timeout < 0 + conn = checkout_for_exclusive_access(remaining_timeout) + collected_conns << conn + newly_checked_out << conn + end + end + end + rescue ExclusiveConnectionTimeoutError + # `raise_on_acquisition_timeout == false` means we are directed to ignore any + # timeouts and are expected to just give up: we've obtained as many connections + # as possible, note that in a case like that we don't return any of the + # `newly_checked_out` connections. + + if raise_on_acquisition_timeout + release_newly_checked_out = true + raise + end + rescue Exception # if something else went wrong + # this can't be a "naked" rescue, because we have should return conns + # even for non-StandardErrors + release_newly_checked_out = true + raise + ensure + if release_newly_checked_out && newly_checked_out + # releasing only those conns that were checked out in this method, conns + # checked outside this method (before it was called) are not for us to release + newly_checked_out.each {|conn| checkin(conn)} + end + end + + #-- + # Must be called in a synchronize block. + def checkout_for_exclusive_access(checkout_timeout) + checkout(checkout_timeout) + rescue ConnectionTimeoutError + # this block can't be easily moved into attempt_to_checkout_all_existing_connections's + # rescue block, because doing so would put it outside of synchronize section, without + # being in a critical section thread_report might become inaccurate + msg = "could not obtain ownership of all database connections in #{checkout_timeout} seconds" + + thread_report = [] + @connections.each do |conn| + unless conn.owner == Thread.current + thread_report << "#{conn} is owned by #{conn.owner}" + end + end + + msg << " (#{thread_report.join(', ')})" if thread_report.any? + + raise ExclusiveConnectionTimeoutError, msg + end + + def with_new_connections_blocked + previous_value = nil + synchronize do + previous_value, @new_cons_enabled = @new_cons_enabled, false + end + yield + ensure + synchronize { @new_cons_enabled = previous_value } + end # Acquire a connection by one of 1) immediately removing one # from the queue of available connections, 2) creating a new @@ -412,44 +689,82 @@ module ActiveRecord # # Raises: # - ConnectionTimeoutError if a connection could not be acquired - def acquire_connection - if conn = @available.poll + # + #-- + # Implementation detail: the connection returned by +acquire_connection+ + # will already be "+connection.lease+ -ed" to the current thread. + def acquire_connection(checkout_timeout) + # NOTE: we rely on `@available.poll` and `try_to_checkout_new_connection` to + # `conn.lease` the returned connection (and to do this in a `synchronized` + # section), this is not the cleanest implementation, as ideally we would + # `synchronize { conn.lease }` in this method, but by leaving it to `@available.poll` + # and `try_to_checkout_new_connection` we can piggyback on `synchronize` sections + # of the said methods and avoid an additional `synchronize` overhead. + if conn = @available.poll || try_to_checkout_new_connection conn - elsif @connections.size < @size - checkout_new_connection else reap - @available.poll(@checkout_timeout) + @available.poll(checkout_timeout) end end - def release(conn, owner) - thread_id = owner.object_id - - if @reserved_connections[thread_id] == conn - @reserved_connections.delete thread_id - end + #-- + # if owner_thread param is omitted, this must be called in synchronize block + def remove_connection_from_thread_cache(conn, owner_thread = conn.owner) + @thread_cached_conns.delete_pair(connection_cache_key(owner_thread), conn) end + alias_method :release, :remove_connection_from_thread_cache def new_connection - Base.send(spec.adapter_method, spec.config) + Base.send(spec.adapter_method, spec.config).tap do |conn| + conn.schema_cache = schema_cache.dup if schema_cache + end + end + + # If the pool is not at a +@size+ limit, establish new connection. Connecting + # to the DB is done outside main synchronized section. + #-- + # Implementation constraint: a newly established connection returned by this + # method must be in the +.leased+ state. + def try_to_checkout_new_connection + # first in synchronized section check if establishing new conns is allowed + # and increment @now_connecting, to prevent overstepping this pool's @size + # constraint + do_checkout = synchronize do + if @new_cons_enabled && (@connections.size + @now_connecting) < @size + @now_connecting += 1 + end + end + if do_checkout + begin + # if successfully incremented @now_connecting establish new connection + # outside of synchronized section + conn = checkout_new_connection + ensure + synchronize do + if conn + adopt_connection(conn) + # returned conn needs to be already leased + conn.lease + end + @now_connecting -= 1 + end + end + end end - def current_connection_id #:nodoc: - Base.connection_id ||= Thread.current.object_id + def adopt_connection(conn) + conn.pool = self + @connections << conn end def checkout_new_connection raise ConnectionNotEstablished unless @automatic_reconnect - - c = new_connection - c.pool = self - @connections << c - c + new_connection end def checkout_and_verify(c) - c.run_callbacks :checkout do + c._run_checkout_callbacks do c.verify! end c @@ -618,7 +933,9 @@ module ActiveRecord # A connection was established in an ancestor process that must have # subsequently forked. We can't reuse the connection, but we can copy # the specification and establish a new connection with it. - establish_connection owner, ancestor_pool.spec + establish_connection(owner, ancestor_pool.spec).tap do |pool| + pool.schema_cache = ancestor_pool.schema_cache if ancestor_pool.schema_cache + end else owner_to_pool[owner.name] = nil end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb index c0a2111571..30b2fca2ca 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/database_limits.rb @@ -18,9 +18,9 @@ module ActiveRecord end # Returns the maximum allowed length for an index name. This - # limit is enforced by rails and Is less than or equal to + # limit is enforced by \Rails and is less than or equal to # <tt>index_name_length</tt>. The gap between - # <tt>index_name_length</tt> is to allow internal rails + # <tt>index_name_length</tt> is to allow internal \Rails # operations to use prefixes in temporary operations. def allowed_index_name_length index_name_length diff --git a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb index 42c794c828..1e13b24867 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb @@ -40,8 +40,9 @@ module ActiveRecord # Returns a single value from a record def select_value(arel, name = nil, binds = []) - if result = select_one(arel, name, binds) - result.values.first + arel, binds = binds_from_relation arel, binds + if result = select_rows(to_sql(arel, binds), name, binds).first + result.first end end @@ -188,7 +189,7 @@ module ActiveRecord # You should consult the documentation for your database to understand the # semantics of these different levels: # - # * http://www.postgresql.org/docs/9.1/static/transaction-iso.html + # * http://www.postgresql.org/docs/current/static/transaction-iso.html # * https://dev.mysql.com/doc/refman/5.6/en/set-transaction.html # # An <tt>ActiveRecord::TransactionIsolationError</tt> will be raised if: @@ -288,8 +289,12 @@ module ActiveRecord columns = schema_cache.columns_hash(table_name) binds = fixture.map do |name, value| - type = lookup_cast_type_from_column(columns[name]) - Relation::QueryAttribute.new(name, value, type) + if column = columns[name] + type = lookup_cast_type_from_column(column) + Relation::QueryAttribute.new(name, value, type) + else + raise Fixture::FixtureError, %(table "#{table_name}" has no column named "#{name}".) + end end key_list = fixture.keys.map { |name| quote_column_name(name) } value_list = prepare_binds_for_database(binds).map do |value| diff --git a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb index 91c7298983..2c7409b2dc 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/quoting.rb @@ -123,6 +123,8 @@ module ActiveRecord 'f' end + # Quote date/time values for use in SQL input. Includes microseconds + # if the value is a Time responding to usec. def quoted_date(value) if value.acts_like?(:time) zone_conversion_method = ActiveRecord::Base.default_timezone == :utc ? :getutc : :getlocal diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb index f754df93b6..18d943f452 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb @@ -14,10 +14,6 @@ module ActiveRecord send m, o end - def visit_AddColumn(o) - "ADD #{accept(o)}" - end - delegate :quote_column_name, :quote_table_name, :quote_default_expression, :type_to_sql, to: :@conn private :quote_column_name, :quote_table_name, :quote_default_expression, :type_to_sql @@ -25,7 +21,7 @@ module ActiveRecord def visit_AlterTable(o) sql = "ALTER TABLE #{quote_table_name(o.name)} " - sql << o.adds.map { |col| visit_AddColumn col }.join(' ') + sql << o.adds.map { |col| accept col }.join(' ') sql << o.foreign_key_adds.map { |fk| visit_AddForeignKey fk }.join(' ') sql << o.foreign_key_drops.map { |fk| visit_DropForeignKey fk }.join(' ') end @@ -37,6 +33,10 @@ module ActiveRecord column_sql end + def visit_AddColumnDefinition(o) + "ADD #{accept(o.column)}" + end + def visit_TableDefinition(o) create_sql = "CREATE#{' TEMPORARY' if o.temporary} TABLE " create_sql << "#{quote_table_name(o.name)} " @@ -70,6 +70,7 @@ module ActiveRecord column_options[:after] = o.after column_options[:auto_increment] = o.auto_increment column_options[:primary_key] = o.primary_key + column_options[:collation] = o.collation column_options end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb index cb83d0022c..d17e272ed1 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb @@ -1,8 +1,3 @@ -require 'date' -require 'set' -require 'bigdecimal' -require 'bigdecimal/util' - module ActiveRecord module ConnectionAdapters #:nodoc: # Abstract representation of an index definition on a table. Instances of @@ -15,13 +10,16 @@ module ActiveRecord # are typically created by methods in TableDefinition, and added to the # +columns+ attribute of said TableDefinition object, in order to be used # for generating a number of table creation or table changing SQL statements. - class ColumnDefinition < Struct.new(:name, :type, :limit, :precision, :scale, :default, :null, :first, :after, :auto_increment, :primary_key, :sql_type) #:nodoc: + class ColumnDefinition < Struct.new(:name, :type, :limit, :precision, :scale, :default, :null, :first, :after, :auto_increment, :primary_key, :collation, :sql_type) #:nodoc: def primary_key? primary_key || type.to_sym == :primary_key end end + class AddColumnDefinition < Struct.new(:column) # :nodoc: + end + class ChangeColumnDefinition < Struct.new(:column, :name) #:nodoc: end @@ -227,7 +225,7 @@ module ActiveRecord # The +type+ parameter is normally one of the migrations native types, # which is one of the following: # <tt>:primary_key</tt>, <tt>:string</tt>, <tt>:text</tt>, - # <tt>:integer</tt>, <tt>:float</tt>, <tt>:decimal</tt>, + # <tt>:integer</tt>, <tt>:bigint</tt>, <tt>:float</tt>, <tt>:decimal</tt>, # <tt>:datetime</tt>, <tt>:time</tt>, <tt>:date</tt>, # <tt>:binary</tt>, <tt>:boolean</tt>. # @@ -359,6 +357,7 @@ module ActiveRecord def column(name, type, options = {}) name = name.to_s type = type.to_sym + options = options.dup if @columns_hash[name] && @columns_hash[name].primary_key? raise ArgumentError, "you can't redefine the primary key column '#{name}'. To define a custom primary key, pass { id: false } to create_table." @@ -399,17 +398,12 @@ module ActiveRecord column(:updated_at, :datetime, options) end - # Adds a reference. Optionally adds a +type+ column, if the - # +:polymorphic+ option is provided. +references+ and +belongs_to+ - # are interchangeable. The reference column will be an +integer+ by default, - # the +:type+ option can be used to specify a different type. A foreign - # key will be created if the +:foreign_key+ option is passed. + # Adds a reference. # # t.references(:user) - # t.references(:user, type: "string") - # t.belongs_to(:supplier, polymorphic: true) + # t.belongs_to(:supplier, foreign_key: true) # - # See SchemaStatements#add_reference + # See SchemaStatements#add_reference for details of the options you can use. def references(*args, **options) args.each do |col| ReferenceDefinition.new(col, **options).add_to(self) @@ -433,6 +427,7 @@ module ActiveRecord column.after = options[:after] column.auto_increment = options[:auto_increment] column.primary_key = type == :primary_key || options[:primary_key] + column.collation = options[:collation] column end @@ -475,7 +470,7 @@ module ActiveRecord def add_column(name, type, options) name = name.to_s type = type.to_sym - @adds << @td.new_column_definition(name, type, options) + @adds << AddColumnDefinition.new(@td.new_column_definition(name, type, options)) end end @@ -597,10 +592,11 @@ module ActiveRecord # # t.change_default(:qualification, 'new') # t.change_default(:authorized, 1) + # t.change_default(:status, from: nil, to: "draft") # # See SchemaStatements#change_column_default - def change_default(column_name, default) - @base.change_column_default(name, column_name, default) + def change_default(column_name, default_or_changes) + @base.change_column_default(name, column_name, default_or_changes) end # Removes the column(s) from the table definition. @@ -642,15 +638,12 @@ module ActiveRecord @base.rename_column(name, column_name, new_column_name) end - # Adds a reference. Optionally adds a +type+ column, if - # <tt>:polymorphic</tt> option is provided. + # Adds a reference. # # t.references(:user) - # t.references(:user, type: "string") - # t.belongs_to(:supplier, polymorphic: true) # t.belongs_to(:supplier, foreign_key: true) # - # See SchemaStatements#add_reference + # See SchemaStatements#add_reference for details of the options you can use. def references(*args) options = args.extract_options! args.each do |ref_name| diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb index 999cb0ec5a..b944a8631c 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb @@ -27,20 +27,31 @@ module ActiveRecord spec[:type] = schema_type(column) spec[:null] = 'false' unless column.null - limit = column.limit || native_database_types[column.type][:limit] - spec[:limit] = limit.inspect if limit - spec[:precision] = column.precision.inspect if column.precision - spec[:scale] = column.scale.inspect if column.scale + if limit = schema_limit(column) + spec[:limit] = limit + end + + if precision = schema_precision(column) + spec[:precision] = precision + end + + if scale = schema_scale(column) + spec[:scale] = scale + end default = schema_default(column) if column.has_default? spec[:default] = default unless default.nil? + if collation = schema_collation(column) + spec[:collation] = collation + end + spec end # Lists the valid migration options def migration_keys - [:name, :limit, :precision, :scale, :default, :null] + [:name, :limit, :precision, :scale, :default, :null, :collation] end private @@ -49,6 +60,19 @@ module ActiveRecord column.type.to_s end + def schema_limit(column) + limit = column.limit || native_database_types[column.type][:limit] + limit.inspect if limit + end + + def schema_precision(column) + column.precision.inspect if column.precision + end + + def schema_scale(column) + column.scale.inspect if column.scale + end + def schema_default(column) type = lookup_cast_type_from_column(column) default = type.deserialize(column.default) @@ -56,6 +80,10 @@ module ActiveRecord type.type_cast_for_schema(default) end end + + def schema_collation(column) + column.collation.inspect if column.collation + end end end end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb index f0909aabb5..a30945d0ee 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -14,6 +14,10 @@ module ActiveRecord {} end + def table_options(table_name) + nil + end + # Truncates a table alias according to the limits of the current adapter. def table_alias_for(table_name) table_name[0...table_alias_length].tr('.', '_') @@ -120,6 +124,8 @@ module ActiveRecord # [<tt>:id</tt>] # Whether to automatically add a primary key column. Defaults to true. # Join tables for +has_and_belongs_to_many+ should set it to false. + # + # A Symbol can be used to specify the type of the generated primary key column. # [<tt>:primary_key</tt>] # The name of the primary key, if one is to be added automatically. # Defaults to +id+. If <tt>:id</tt> is false this option is ignored. @@ -163,6 +169,19 @@ module ActiveRecord # name varchar(80) # ) # + # ====== Change the primary key column type + # + # create_table(:tags, id: :string) do |t| + # t.column :label, :string + # end + # + # generates: + # + # CREATE TABLE tags ( + # id varchar PRIMARY KEY, + # label varchar + # ) + # # ====== Do not add a primary key column # # create_table(:categories_suppliers, id: false) do |t| @@ -390,6 +409,10 @@ module ActiveRecord # Adds a new column to the named table. # See TableDefinition#column for details of the options you can use. + # + # Note: Not all options will be available, generally this command should + # ignore most of them. In favor of doing a low-level call to simply + # create a column. def add_column(table_name, column_name, type, options = {}) at = create_alter_table table_name at.add_column(column_name, type, options) @@ -437,7 +460,12 @@ module ActiveRecord # # change_column_default(:users, :email, nil) # - def change_column_default(table_name, column_name, default) + # Passing a hash containing +:from+ and +:to+ will make this change + # reversible in migration: + # + # change_column_default(:posts, :state, from: nil, to: "draft") + # + def change_column_default(table_name, column_name, default_or_changes) raise NotImplementedError, "change_column_default is not implemented" end @@ -533,6 +561,8 @@ module ActiveRecord # # CREATE UNIQUE INDEX index_accounts_on_branch_id_and_party_id ON accounts(branch_id, party_id) WHERE active # + # Note: Partial indexes are only supported for PostgreSQL and SQLite 3.8.0+. + # # ====== Creating an index with a specific method # # add_index(:developers, :name, using: 'btree') @@ -562,7 +592,7 @@ module ActiveRecord # # Removes the +index_accounts_on_column+ in the +accounts+ table. # - # remove_index :accounts, :column + # remove_index :accounts, :branch_id # # Removes the index named +index_accounts_on_branch_id+ in the +accounts+ table. # @@ -624,11 +654,21 @@ module ActiveRecord indexes(table_name).detect { |i| i.name == index_name } end - # Adds a reference. Optionally adds a +type+ column, if <tt>:polymorphic</tt> option is provided. - # The reference column is an +integer+ by default, the <tt>:type</tt> option can be used to specify - # a different type. + # Adds a reference. The reference column is an integer by default, + # the <tt>:type</tt> option can be used to specify a different type. + # Optionally adds a +_type+ column, if <tt>:polymorphic</tt> option is provided. # <tt>add_reference</tt> and <tt>add_belongs_to</tt> are acceptable. # + # The +options+ hash can include the following keys: + # [<tt>:type</tt>] + # The reference column type. Defaults to +:integer+. + # [<tt>:index</tt>] + # Add an appropriate index. Defaults to false. + # [<tt>:foreign_key</tt>] + # Add an appropriate foreign key. Defaults to false. + # [<tt>:polymorphic</tt>] + # Whether an additional +_type+ column should be added. Defaults to false. + # # ====== Create a user_id integer column # # add_reference(:products, :user) @@ -637,10 +677,6 @@ module ActiveRecord # # add_reference(:products, :user, type: :string) # - # ====== Create a supplier_id and supplier_type columns - # - # add_belongs_to(:products, :supplier, polymorphic: true) - # # ====== Create supplier_id, supplier_type columns and appropriate index # # add_reference(:products, :supplier, polymorphic: true, index: true) @@ -725,9 +761,9 @@ module ActiveRecord # [<tt>:name</tt>] # The constraint name. Defaults to <tt>fk_rails_<identifier></tt>. # [<tt>:on_delete</tt>] - # Action that happens <tt>ON DELETE</tt>. Valid values are +:nullify+, +:cascade:+ and +:restrict+ + # Action that happens <tt>ON DELETE</tt>. Valid values are +:nullify+, +:cascade+ and +:restrict+ # [<tt>:on_update</tt>] - # Action that happens <tt>ON UPDATE</tt>. Valid values are +:nullify+, +:cascade:+ and +:restrict+ + # Action that happens <tt>ON UPDATE</tt>. Valid values are +:nullify+, +:cascade+ and +:restrict+ def add_foreign_key(from_table, to_table, options = {}) return unless supports_foreign_keys? @@ -746,7 +782,10 @@ module ActiveRecord execute schema_creation.accept(at) end - # Removes the given foreign key from the table. + # Removes the given foreign key from the table. Any option parameters provided + # will be used to re-add the foreign key in case of a migration rollback. + # It is recommended that you provide any options used when creating the foreign + # key so that the migration can be reverted properly. # # Removes the foreign key on +accounts.branch_id+. # @@ -760,6 +799,7 @@ module ActiveRecord # # remove_foreign_key :accounts, name: :special_fk_name # + # The +options+ hash accepts the same keys as SchemaStatements#add_foreign_key. def remove_foreign_key(from_table, options_or_to_table = {}) return unless supports_foreign_keys? @@ -797,7 +837,10 @@ module ActiveRecord end def foreign_key_column_for(table_name) # :nodoc: - "#{table_name.to_s.singularize}_id" + prefix = Base.table_name_prefix + suffix = Base.table_name_suffix + name = table_name.to_s =~ /#{prefix}(.+)#{suffix}/ ? $1 : table_name.to_s + "#{name.singularize}_id" end def dump_schema_information #:nodoc: @@ -909,13 +952,13 @@ module ActiveRecord def add_index_options(table_name, column_name, options = {}) #:nodoc: column_names = Array(column_name) - index_name = index_name(table_name, column: column_names) options.assert_valid_keys(:unique, :order, :name, :where, :length, :internal, :using, :algorithm, :type) - index_type = options[:unique] ? "UNIQUE" : "" index_type = options[:type].to_s if options.key?(:type) + index_type ||= options[:unique] ? "UNIQUE" : "" index_name = options[:name].to_s if options.key?(:name) + index_name ||= index_name(table_name, column: column_names) max_index_length = options.fetch(:internal, false) ? index_name_length : allowed_index_name_length if options.key?(:algorithm) @@ -1028,11 +1071,19 @@ module ActiveRecord end end - def validate_index_length!(table_name, new_name) + def validate_index_length!(table_name, new_name) # :nodoc: if new_name.length > allowed_index_name_length raise ArgumentError, "Index name '#{new_name}' on table '#{table_name}' is too long; the limit is #{allowed_index_name_length} characters" end end + + def extract_new_default_value(default_or_changes) + if default_or_changes.is_a?(Hash) && default_or_changes.has_key?(:from) && default_or_changes.has_key?(:to) + default_or_changes[:to] + else + default_or_changes + end + end end end end diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index ae42e8ef8d..56227ddd80 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -1,13 +1,9 @@ -require 'date' -require 'bigdecimal' -require 'bigdecimal/util' require 'active_record/type' require 'active_support/core_ext/benchmark' require 'active_record/connection_adapters/schema_cache' require 'active_record/connection_adapters/sql_type_metadata' require 'active_record/connection_adapters/abstract/schema_dumper' require 'active_record/connection_adapters/abstract/schema_creation' -require 'monitor' require 'arel/collectors/bind' require 'arel/collectors/sql_string' @@ -70,7 +66,6 @@ module ActiveRecord include DatabaseLimits include QueryCache include ActiveSupport::Callbacks - include MonitorMixin include ColumnDumper SIMPLE_INT = /\A\d+\z/ @@ -112,6 +107,18 @@ module ActiveRecord @prepared_statements = false end + class Version + include Comparable + + def initialize(version_string) + @version = version_string.split('.').map(&:to_i) + end + + def <=>(version_string) + @version <=> version_string.split('.').map(&:to_i) + end + end + class BindCollector < Arel::Collectors::Bind def compile(bvs, conn) casted_binds = conn.prepare_binds_for_database(bvs) @@ -141,12 +148,20 @@ module ActiveRecord SchemaCreation.new self end + # this method must only be called while holding connection pool's mutex def lease - synchronize do - unless in_use? - @owner = Thread.current + if in_use? + msg = 'Cannot lease connection, ' + if @owner == Thread.current + msg << 'it is already leased by the current thread.' + else + msg << "it is already in use by a different thread: #{@owner}. " << + "Current thread: #{Thread.current}." end + raise ActiveRecordError, msg end + + @owner = Thread.current end def schema_cache=(cache) @@ -154,6 +169,7 @@ module ActiveRecord @schema_cache = cache end + # this method must only be called while holding connection pool's mutex def expire @owner = nil end @@ -387,8 +403,8 @@ module ActiveRecord end end - def new_column(name, default, sql_type_metadata = nil, null = true) - Column.new(name, default, sql_type_metadata, null) + def new_column(name, default, sql_type_metadata = nil, null = true, default_function = nil, collation = nil) + Column.new(name, default, sql_type_metadata, null, default_function, collation) end def lookup_cast_type(sql_type) # :nodoc: diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb index 76aee452ca..af156c9c78 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb @@ -1,4 +1,3 @@ -require 'arel/visitors/bind_visitor' require 'active_support/core_ext/string/strip' module ActiveRecord @@ -14,7 +13,7 @@ module ActiveRecord end class ColumnDefinition < ActiveRecord::ConnectionAdapters::ColumnDefinition - attr_accessor :charset, :collation + attr_accessor :charset end class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition @@ -28,7 +27,6 @@ module ActiveRecord column.auto_increment = true end column.charset = options[:charset] - column.collation = options[:collation] column end @@ -44,10 +42,6 @@ module ActiveRecord end class SchemaCreation < AbstractAdapter::SchemaCreation - def visit_AddColumn(o) - add_column_position!(super, column_options(o)) - end - private def visit_DropForeignKey(name) @@ -67,6 +61,10 @@ module ActiveRecord create_sql end + def visit_AddColumnDefinition(o) + add_column_position!(super, column_options(o.column)) + end + def visit_ChangeColumnDefinition(o) change_column_sql = "CHANGE #{quote_column_name(o.name)} #{accept(o.column)}" add_column_position!(change_column_sql, column_options(o.column)) @@ -75,7 +73,6 @@ module ActiveRecord def column_options(o) column_options = super column_options[:charset] = o.charset - column_options[:collation] = o.collation column_options end @@ -99,8 +96,8 @@ module ActiveRecord end def index_in_create(table_name, column_name, options) - index_name, index_type, index_columns, index_options, index_algorithm, index_using = @conn.add_index_options(table_name, column_name, options) - "#{index_type} INDEX #{quote_column_name(index_name)} #{index_using} (#{index_columns})#{index_options} #{index_algorithm}" + index_name, index_type, index_columns, _, _, index_using = @conn.add_index_options(table_name, column_name, options) + "#{index_type} INDEX #{quote_column_name(index_name)} #{index_using} (#{index_columns}) " end end @@ -124,24 +121,28 @@ module ActiveRecord spec end - def prepare_column_options(column) - spec = super - spec.delete(:precision) if /time/ === column.sql_type && column.precision == 0 - spec.delete(:limit) if :boolean === column.type + private + + def schema_limit(column) + super unless column.type == :boolean + end + + def schema_precision(column) + super unless /time/ === column.sql_type && column.precision == 0 + end + + def schema_collation(column) if column.collation && table_name = column.instance_variable_get(:@table_name) @collation_cache ||= {} @collation_cache[table_name] ||= select_one("SHOW TABLE STATUS LIKE '#{table_name}'")["Collation"] - spec[:collation] = column.collation.inspect if column.collation != @collation_cache[table_name] + column.collation.inspect if column.collation != @collation_cache[table_name] end - spec end - def migration_keys - super + [:collation] - end + public class Column < ConnectionAdapters::Column # :nodoc: - delegate :strict, :collation, :extra, to: :sql_type_metadata, allow_nil: true + delegate :strict, :extra, to: :sql_type_metadata, allow_nil: true def initialize(*) super @@ -195,12 +196,11 @@ module ActiveRecord end class MysqlTypeMetadata < DelegateClass(SqlTypeMetadata) # :nodoc: - attr_reader :collation, :extra, :strict + attr_reader :extra, :strict - def initialize(type_metadata, collation: "", extra: "", strict: false) + def initialize(type_metadata, extra: "", strict: false) super(type_metadata) @type_metadata = type_metadata - @collation = collation @extra = extra @strict = strict end @@ -218,7 +218,7 @@ module ActiveRecord protected def attributes_for_hash - [self.class, @type_metadata, collation, extra, strict] + [self.class, @type_metadata, extra, strict] end end @@ -307,7 +307,7 @@ module ActiveRecord # # http://bugs.mysql.com/bug.php?id=39170 def supports_transaction_isolation? - version[0] >= 5 + version >= '5.0.0' end def supports_indexes_in_create? @@ -319,11 +319,11 @@ module ActiveRecord end def supports_views? - version[0] >= 5 + version >= '5.0.0' end def supports_datetime_with_precision? - (version[0] == 5 && version[1] >= 6) || version[0] >= 6 + version >= '5.6.4' end def native_database_types @@ -342,8 +342,8 @@ module ActiveRecord raise NotImplementedError end - def new_column(field, default, sql_type_metadata = nil, null = true) # :nodoc: - Column.new(field, default, sql_type_metadata, null) + def new_column(field, default, sql_type_metadata = nil, null = true, default_function = nil, collation = nil) # :nodoc: + Column.new(field, default, sql_type_metadata, null, default_function, collation) end # Must return the MySQL error number from the exception, if the exception has an @@ -386,6 +386,14 @@ module ActiveRecord 0 end + def quoted_date(value) + if supports_datetime_with_precision? + super + else + super.sub(/\.\d{6}\z/, '') + end + end + # REFERENTIAL INTEGRITY ==================================== def disable_referential_integrity #:nodoc: @@ -566,8 +574,8 @@ module ActiveRecord each_hash(result).map do |field| field_name = set_field_encoding(field[:Field]) sql_type = field[:Type] - type_metadata = fetch_type_metadata(sql_type, field[:Collation], field[:Extra]) - new_column(field_name, field[:Default], type_metadata, field[:Null] == "YES") + type_metadata = fetch_type_metadata(sql_type, field[:Extra]) + new_column(field_name, field[:Default], type_metadata, field[:Null] == "YES", nil, field[:Collation]) end end end @@ -629,12 +637,13 @@ module ActiveRecord end end - def change_column_default(table_name, column_name, default) #:nodoc: + def change_column_default(table_name, column_name, default_or_changes) #:nodoc: + default = extract_new_default_value(default_or_changes) column = column_for(table_name, column_name) change_column table_name, column_name, column.sql_type, :default => default end - def change_column_null(table_name, column_name, null, default = nil) + def change_column_null(table_name, column_name, null, default = nil) #:nodoc: column = column_for(table_name, column_name) unless null || default.nil? @@ -654,8 +663,8 @@ module ActiveRecord end def add_index(table_name, column_name, options = {}) #:nodoc: - index_name, index_type, index_columns, index_options, index_algorithm, index_using = add_index_options(table_name, column_name, options) - execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} #{index_using} ON #{quote_table_name(table_name)} (#{index_columns})#{index_options} #{index_algorithm}" + index_name, index_type, index_columns, _, index_algorithm, index_using = add_index_options(table_name, column_name, options) + execute "CREATE #{index_type} INDEX #{quote_column_name(index_name)} #{index_using} ON #{quote_table_name(table_name)} (#{index_columns}) #{index_algorithm}" end def foreign_keys(table_name) @@ -686,33 +695,25 @@ module ActiveRecord end end + def table_options(table_name) + create_table_info = select_one("SHOW CREATE TABLE #{quote_table_name(table_name)}")["Create Table"] + + # strip create_definitions and partition_options + raw_table_options = create_table_info.sub(/\A.*\n\) /m, '').sub(/\n\/\*!.*\*\/\n\z/m, '').strip + + # strip AUTO_INCREMENT + raw_table_options.sub(/(ENGINE=\w+)(?: AUTO_INCREMENT=\d+)/, '\1') + end + # Maps logical Rails types to MySQL-specific data types. def type_to_sql(type, limit = nil, precision = nil, scale = nil) case type.to_s when 'binary' - case limit - when 0..0xfff; "varbinary(#{limit})" - when nil; "blob" - when 0x1000..0xffffffff; "blob(#{limit})" - else raise(ActiveRecordError, "No binary type has character length #{limit}") - end + binary_to_sql(limit) when 'integer' - case limit - when 1; 'tinyint' - when 2; 'smallint' - when 3; 'mediumint' - when nil, 4, 11; 'int(11)' # compatibility with MySQL default - when 5..8; 'bigint' - else raise(ActiveRecordError, "No integer type has byte size #{limit}") - end + integer_to_sql(limit) when 'text' - case limit - when 0..0xff; 'tinytext' - when nil, 0x100..0xffff; 'text' - when 0x10000..0xffffff; 'mediumtext' - when 0x1000000..0xffffffff; 'longtext' - else raise(ActiveRecordError, "No text type has character length #{limit}") - end + text_to_sql(limit) else super end @@ -826,21 +827,8 @@ module ActiveRecord end end - def fetch_type_metadata(sql_type, collation = "", extra = "") - MysqlTypeMetadata.new(super(sql_type), collation: collation, extra: extra, strict: strict_mode?) - end - - # MySQL is too stupid to create a temporary table for use subquery, so we have - # to give it some prompting in the form of a subsubquery. Ugh! - def subquery_for(key, select) - subsubselect = select.clone - subsubselect.projections = [key] - - subselect = Arel::SelectManager.new(select.engine) - subselect.project Arel.sql(key.name) - # Materialized subquery by adding distinct - # to work with MySQL 5.7.6 which sets optimizer_switch='derived_merge=on' - subselect.from subsubselect.distinct.as('__active_record_temp') + def fetch_type_metadata(sql_type, extra = "") + MysqlTypeMetadata.new(super(sql_type), extra: extra, strict: strict_mode?) end def add_index_length(option_strings, column_names, options = {}) @@ -882,7 +870,7 @@ module ActiveRecord def add_column_sql(table_name, column_name, type, options = {}) td = create_table_definition(table_name) cd = td.new_column_definition(column_name, type, options) - schema_creation.visit_AddColumn cd + schema_creation.accept(AddColumnDefinition.new(cd)) end def change_column_sql(table_name, column_name, type, options = {}) @@ -924,8 +912,9 @@ module ActiveRecord end def add_index_sql(table_name, column_name, options = {}) - index_name, index_type, index_columns = add_index_options(table_name, column_name, options) - "ADD #{index_type} INDEX #{index_name} (#{index_columns})" + index_name, index_type, index_columns, _, index_algorithm, index_using = add_index_options(table_name, column_name, options) + index_algorithm[0, 0] = ", " if index_algorithm.present? + "ADD #{index_type} INDEX #{quote_column_name(index_name)} #{index_using} (#{index_columns})#{index_algorithm}" end def remove_index_sql(table_name, options = {}) @@ -943,8 +932,21 @@ module ActiveRecord private + # MySQL is too stupid to create a temporary table for use subquery, so we have + # to give it some prompting in the form of a subsubquery. Ugh! + def subquery_for(key, select) + subsubselect = select.clone + subsubselect.projections = [key] + + subselect = Arel::SelectManager.new(select.engine) + subselect.project Arel.sql(key.name) + # Materialized subquery by adding distinct + # to work with MySQL 5.7.6 which sets optimizer_switch='derived_merge=on' + subselect.from subsubselect.distinct.as('__active_record_temp') + end + def version - @version ||= full_version.scan(/^(\d+)\.(\d+)\.(\d+)/).flatten.map(&:to_i) + @version ||= Version.new(full_version.match(/^\d+\.\d+\.\d+/)[0]) end def mariadb? @@ -952,7 +954,7 @@ module ActiveRecord end def supports_rename_index? - mariadb? ? false : (version[0] == 5 && version[1] >= 7) || version[0] >= 6 + mariadb? ? false : version >= '5.7.6' end def configure_connection @@ -966,10 +968,12 @@ module ActiveRecord wait_timeout = 2147483 unless wait_timeout.is_a?(Fixnum) variables['wait_timeout'] = self.class.type_cast_config_to_integer(wait_timeout) + defaults = [':default', :default].to_set + # Make MySQL reject illegal values rather than truncating or blanking them, see # http://dev.mysql.com/doc/refman/5.6/en/sql-mode.html#sqlmode_strict_all_tables # If the user has provided another value for sql_mode, don't replace it. - unless variables.has_key?('sql_mode') + unless variables.has_key?('sql_mode') || defaults.include?(@config[:strict]) variables['sql_mode'] = strict_mode? ? 'STRICT_ALL_TABLES' : '' end @@ -984,7 +988,7 @@ module ActiveRecord # Gather up all of the SET variables... variable_assignments = variables.map do |k, v| - if v == ':default' || v == :default + if defaults.include?(v) "@@SESSION.#{k} = DEFAULT" # Sets the value to the global or compile default elsif !v.nil? "@@SESSION.#{k} = #{quote(v)}" @@ -1009,6 +1013,36 @@ module ActiveRecord TableDefinition.new(native_database_types, name, temporary, options, as) end + def binary_to_sql(limit) # :nodoc: + case limit + when 0..0xfff; "varbinary(#{limit})" + when nil; "blob" + when 0x1000..0xffffffff; "blob(#{limit})" + else raise(ActiveRecordError, "No binary type has character length #{limit}") + end + end + + def integer_to_sql(limit) # :nodoc: + case limit + when 1; 'tinyint' + when 2; 'smallint' + when 3; 'mediumint' + when nil, 4, 11; 'int(11)' # compatibility with MySQL default + when 5..8; 'bigint' + else raise(ActiveRecordError, "No integer type has byte size #{limit}") + end + end + + def text_to_sql(limit) # :nodoc: + case limit + when 0..0xff; 'tinytext' + when nil, 0x100..0xffff; 'text' + when 0x10000..0xffffff; 'mediumtext' + when 0x1000000..0xffffffff; 'longtext' + else raise(ActiveRecordError, "No text type has character length #{limit}") + end + end + class MysqlString < Type::String # :nodoc: def serialize(value) case value diff --git a/activerecord/lib/active_record/connection_adapters/column.rb b/activerecord/lib/active_record/connection_adapters/column.rb index f4dda5154e..4b95b0681d 100644 --- a/activerecord/lib/active_record/connection_adapters/column.rb +++ b/activerecord/lib/active_record/connection_adapters/column.rb @@ -12,7 +12,7 @@ module ActiveRecord ISO_DATETIME = /\A(\d{4})-(\d\d)-(\d\d) (\d\d):(\d\d):(\d\d)(\.\d+)?\z/ end - attr_reader :name, :null, :sql_type_metadata, :default, :default_function + attr_reader :name, :null, :sql_type_metadata, :default, :default_function, :collation delegate :precision, :scale, :limit, :type, :sql_type, to: :sql_type_metadata, allow_nil: true @@ -22,12 +22,13 @@ module ActiveRecord # +default+ is the type-casted default value, such as +new+ in <tt>sales_stage varchar(20) default 'new'</tt>. # +sql_type_metadata+ is various information about the type of the column # +null+ determines if this column allows +NULL+ values. - def initialize(name, default, sql_type_metadata = nil, null = true, default_function = nil) + def initialize(name, default, sql_type_metadata = nil, null = true, default_function = nil, collation = nil) @name = name @sql_type_metadata = sql_type_metadata @null = null @default = default @default_function = default_function + @collation = collation @table_name = nil end @@ -60,7 +61,7 @@ module ActiveRecord protected def attributes_for_hash - [self.class, name, default, sql_type_metadata, null, default_function] + [self.class, name, default, sql_type_metadata, null, default_function, collation] end end diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb index 21631be25c..b7db57c9fe 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb @@ -1,6 +1,6 @@ require 'active_record/connection_adapters/abstract_mysql_adapter' -gem 'mysql2', '~> 0.3.13' +gem 'mysql2', '~> 0.3.18' require 'mysql2' module ActiveRecord @@ -254,7 +254,7 @@ module ActiveRecord end def full_version - @full_version ||= @connection.info[:version] + @full_version ||= @connection.server_info[:version] end def set_field_encoding field_name diff --git a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb index 45b935f1d6..2ae462d773 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb @@ -5,8 +5,10 @@ require 'active_support/core_ext/hash/keys' gem 'mysql', '~> 2.9' require 'mysql' -class Mysql +class Mysql # :nodoc: all class Time + # Used for casting DateTime fields to a MySQL friendly Time. + # This was documented in 48498da0dfed5239ea1eafb243ce47d7e3ce9e8e def to_date Date.new(year, month, day) end @@ -69,34 +71,10 @@ module ActiveRecord ADAPTER_NAME = 'MySQL'.freeze class StatementPool < ConnectionAdapters::StatementPool - def initialize(connection, max = 1000) - super - @cache = Hash.new { |h,pid| h[pid] = {} } - end - - def each(&block); cache.each(&block); end - def key?(key); cache.key?(key); end - def [](key); cache[key]; end - def length; cache.length; end - def delete(key); cache.delete(key); end - - def []=(sql, key) - while @max <= cache.size - cache.shift.last[:stmt].close - end - cache[sql] = key - end - - def clear - cache.each_value do |hash| - hash[:stmt].close - end - cache.clear - end - private - def cache - @cache[Process.pid] + + def dealloc(stmt) + stmt[:stmt].close end end @@ -414,8 +392,11 @@ module ActiveRecord # place when an error occurs. To support older MySQL versions, we # need to close the statement and delete the statement from the # cache. - stmt.close - @statements.delete sql + if binds.empty? + stmt.close + else + @statements.delete sql + end raise e end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb index be13ead120..bfa03fa136 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/column.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/column.rb @@ -8,7 +8,8 @@ module ActiveRecord def serial? return unless default_function - %r{\Anextval\('(?<table_name>.+)_#{name}_seq'::regclass\)\z} === default_function + table_name = @table_name || '(?<table_name>.+)' + %r{\Anextval\('"?#{table_name}_#{name}_seq"?'::regclass\)\z} === default_function end end end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb index 92349e2f9b..68752cdd80 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid.rb @@ -12,6 +12,7 @@ require 'active_record/connection_adapters/postgresql/oid/json' require 'active_record/connection_adapters/postgresql/oid/jsonb' require 'active_record/connection_adapters/postgresql/oid/money' require 'active_record/connection_adapters/postgresql/oid/point' +require 'active_record/connection_adapters/postgresql/oid/rails_5_1_point' require 'active_record/connection_adapters/postgresql/oid/range' require 'active_record/connection_adapters/postgresql/oid/specialized_string' require 'active_record/connection_adapters/postgresql/oid/uuid' diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb index 3de794f797..25961a9869 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/array.rb @@ -45,6 +45,11 @@ module ActiveRecord delimiter == other.delimiter end + def type_cast_for_schema(value) + return super unless value.is_a?(::Array) + "[" + value.map { |v| subtype.type_cast_for_schema(v) }.join(", ") + "]" + end + private def type_cast_array(value, method) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb index afc9383f91..87391b5dc7 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb @@ -9,7 +9,7 @@ module ActiveRecord def changed_in_place?(raw_old_value, new_value) # Postgres does not preserve insignificant whitespaces when - # roundtripping jsonb columns. This causes some false positives for + # round-tripping jsonb columns. This causes some false positives for # the comparison here. Therefore, we need to parse and re-dump the # raw value here to ensure the insignificant whitespaces are # consistent with our encoder's output. diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/rails_5_1_point.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/rails_5_1_point.rb new file mode 100644 index 0000000000..7427a25ad5 --- /dev/null +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/rails_5_1_point.rb @@ -0,0 +1,50 @@ +module ActiveRecord + Point = Struct.new(:x, :y) + + module ConnectionAdapters + module PostgreSQL + module OID # :nodoc: + class Rails51Point < Type::Value # :nodoc: + include Type::Helpers::Mutable + + def type + :point + end + + def cast(value) + case value + when ::String + if value[0] == '(' && value[-1] == ')' + value = value[1...-1] + end + x, y = value.split(",") + build_point(x, y) + when ::Array + build_point(*value) + else + value + end + end + + def serialize(value) + if value.is_a?(ActiveRecord::Point) + "(#{number_for_point(value.x)},#{number_for_point(value.y)})" + else + super + end + end + + private + + def number_for_point(number) + number.to_s.gsub(/\.0$/, '') + end + + def build_point(x, y) + ActiveRecord::Point.new(Float(x), Float(y)) + end + end + end + end + end +end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/quoting.rb b/activerecord/lib/active_record/connection_adapters/postgresql/quoting.rb index b7755c4593..f175730551 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/quoting.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/quoting.rb @@ -40,8 +40,7 @@ module ActiveRecord PGconn.quote_ident(name.to_s) end - # Quote date/time values for use in SQL input. Includes microseconds - # if the value is a Time responding to usec. + # Quote date/time values for use in SQL input. def quoted_date(value) #:nodoc: if value.year <= 0 bce_year = format("%04d", -value.year + 1) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb index 022dbdfa27..6399bddbee 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb @@ -103,6 +103,30 @@ module ActiveRecord args.each { |name| column(name, :point, options) } end + def line(*args, **options) + args.each { |name| column(name, :line, options) } + end + + def lseg(*args, **options) + args.each { |name| column(name, :lseg, options) } + end + + def box(*args, **options) + args.each { |name| column(name, :box, options) } + end + + def path(*args, **options) + args.each { |name| column(name, :path, options) } + end + + def polygon(*args, **options) + args.each { |name| column(name, :polygon, options) } + end + + def circle(*args, **options) + args.each { |name| column(name, :circle, options) } + end + def serial(*args, **options) args.each { |name| column(name, :serial, options) } end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb index 168180cfd3..d114cad16b 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -8,6 +8,13 @@ module ActiveRecord o.sql_type = type_to_sql(o.type, o.limit, o.precision, o.scale, o.array) super end + + def add_column_options!(sql, options) + if options[:collation] + sql << " COLLATE \"#{options[:collation]}\"" + end + super + end end module SchemaStatements @@ -63,11 +70,7 @@ module ActiveRecord # Returns the list of all tables in the schema search path or a specified schema. def tables(name = nil) - query(<<-SQL, 'SCHEMA').map { |row| row[0] } - SELECT tablename - FROM pg_tables - WHERE schemaname = ANY (current_schemas(false)) - SQL + select_values("SELECT tablename FROM pg_tables WHERE schemaname = ANY(current_schemas(false))", 'SCHEMA') end # Returns true if table exists. @@ -77,7 +80,7 @@ module ActiveRecord name = Utils.extract_schema_qualified_name(name.to_s) return false unless name.identifier - exec_query(<<-SQL, 'SCHEMA').rows.first[0].to_i > 0 + select_value(<<-SQL, 'SCHEMA').to_i > 0 SELECT COUNT(*) FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = c.relnamespace @@ -93,15 +96,12 @@ module ActiveRecord # Returns true if schema exists. def schema_exists?(name) - exec_query(<<-SQL, 'SCHEMA').rows.first[0].to_i > 0 - SELECT COUNT(*) - FROM pg_namespace - WHERE nspname = '#{name}' - SQL + select_value("SELECT COUNT(*) FROM pg_namespace WHERE nspname = '#{name}'", 'SCHEMA').to_i > 0 end + # Verifies existence of an index with a given name. def index_name_exists?(table_name, index_name, default) - exec_query(<<-SQL, 'SCHEMA').rows.first[0].to_i > 0 + select_value(<<-SQL, 'SCHEMA').to_i > 0 SELECT COUNT(*) FROM pg_class t INNER JOIN pg_index d ON t.oid = d.indrelid @@ -158,55 +158,48 @@ module ActiveRecord # Returns the list of all column definitions for a table. def columns(table_name) # Limit, precision, and scale are all handled by the superclass. - column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod| + column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod, collation| oid = oid.to_i fmod = fmod.to_i type_metadata = fetch_type_metadata(column_name, type, oid, fmod) default_value = extract_value_from_default(default) default_function = extract_default_function(default_value, default) - new_column(column_name, default_value, type_metadata, !notnull, default_function) + new_column(column_name, default_value, type_metadata, !notnull, default_function, collation) end end - def new_column(name, default, sql_type_metadata = nil, null = true, default_function = nil) # :nodoc: - PostgreSQLColumn.new(name, default, sql_type_metadata, null, default_function) + def new_column(name, default, sql_type_metadata = nil, null = true, default_function = nil, collation = nil) # :nodoc: + PostgreSQLColumn.new(name, default, sql_type_metadata, null, default_function, collation) end # Returns the current database name. def current_database - query('select current_database()', 'SCHEMA')[0][0] + select_value('select current_database()', 'SCHEMA') end # Returns the current schema name. def current_schema - query('SELECT current_schema', 'SCHEMA')[0][0] + select_value('SELECT current_schema', 'SCHEMA') end # Returns the current database encoding format. def encoding - query(<<-end_sql, 'SCHEMA')[0][0] - SELECT pg_encoding_to_char(pg_database.encoding) FROM pg_database - WHERE pg_database.datname LIKE '#{current_database}' - end_sql + select_value("SELECT pg_encoding_to_char(encoding) FROM pg_database WHERE datname LIKE '#{current_database}'", 'SCHEMA') end # Returns the current database collation. def collation - query(<<-end_sql, 'SCHEMA')[0][0] - SELECT pg_database.datcollate FROM pg_database WHERE pg_database.datname LIKE '#{current_database}' - end_sql + select_value("SELECT datcollate FROM pg_database WHERE datname LIKE '#{current_database}'", 'SCHEMA') end # Returns the current database ctype. def ctype - query(<<-end_sql, 'SCHEMA')[0][0] - SELECT pg_database.datctype FROM pg_database WHERE pg_database.datname LIKE '#{current_database}' - end_sql + select_value("SELECT datctype FROM pg_database WHERE datname LIKE '#{current_database}'", 'SCHEMA') end # Returns an array of schema names. def schema_names - query(<<-SQL, 'SCHEMA').flatten + select_values(<<-SQL, 'SCHEMA') SELECT nspname FROM pg_namespace WHERE nspname !~ '^pg_.*' @@ -239,12 +232,12 @@ module ActiveRecord # Returns the active schema search path. def schema_search_path - @schema_search_path ||= query('SHOW search_path', 'SCHEMA')[0][0] + @schema_search_path ||= select_value('SHOW search_path', 'SCHEMA') end # Returns the current client message level. def client_min_messages - query('SHOW client_min_messages', 'SCHEMA')[0][0] + select_value('SHOW client_min_messages', 'SCHEMA') end # Set the client message level. @@ -262,10 +255,7 @@ module ActiveRecord end def serial_sequence(table, column) - result = exec_query(<<-eosql, 'SCHEMA') - SELECT pg_get_serial_sequence('#{table}', '#{column}') - eosql - result.rows.first.first + select_value("SELECT pg_get_serial_sequence('#{table}', '#{column}')", 'SCHEMA') end # Sets the sequence of a table's primary key to the specified value. @@ -276,9 +266,7 @@ module ActiveRecord if sequence quoted_sequence = quote_table_name(sequence) - select_value <<-end_sql, 'SCHEMA' - SELECT setval('#{quoted_sequence}', #{value}) - end_sql + select_value("SELECT setval('#{quoted_sequence}', #{value})", 'SCHEMA') else @logger.warn "#{table} has primary key #{pk} with no default sequence" if @logger end @@ -301,7 +289,7 @@ module ActiveRecord if pk && sequence quoted_sequence = quote_table_name(sequence) - select_value <<-end_sql, 'SCHEMA' + select_value(<<-end_sql, 'SCHEMA') SELECT setval('#{quoted_sequence}', (SELECT COALESCE(MAX(#{quote_column_name pk})+(SELECT increment_by FROM #{quoted_sequence}), (SELECT min_value FROM #{quoted_sequence})) FROM #{quote_table_name(table)}), false) end_sql end @@ -363,7 +351,7 @@ module ActiveRecord # Returns just a table's primary key def primary_key(table) - pks = exec_query(<<-end_sql, 'SCHEMA').rows + pks = query(<<-end_sql, 'SCHEMA') SELECT attr.attname FROM pg_attribute attr INNER JOIN pg_constraint cons ON attr.attrelid = cons.conrelid AND attr.attnum = any(cons.conkey) @@ -395,20 +383,20 @@ module ActiveRecord rename_table_indexes(table_name, new_name) end - # Adds a new column to the named table. - # See TableDefinition#column for details of the options you can use. - def add_column(table_name, column_name, type, options = {}) + def add_column(table_name, column_name, type, options = {}) #:nodoc: clear_cache! super end - # Changes the column of a table. - def change_column(table_name, column_name, type, options = {}) + def change_column(table_name, column_name, type, options = {}) #:nodoc: clear_cache! quoted_table_name = quote_table_name(table_name) quoted_column_name = quote_column_name(column_name) sql_type = type_to_sql(type, options[:limit], options[:precision], options[:scale], options[:array]) sql = "ALTER TABLE #{quoted_table_name} ALTER COLUMN #{quoted_column_name} TYPE #{sql_type}" + if options[:collation] + sql << " COLLATE \"#{options[:collation]}\"" + end if options[:using] sql << " USING #{options[:using]}" elsif options[:cast_as] @@ -422,11 +410,12 @@ module ActiveRecord end # Changes the default value of a table column. - def change_column_default(table_name, column_name, default) # :nodoc: + def change_column_default(table_name, column_name, default_or_changes) # :nodoc: clear_cache! column = column_for(table_name, column_name) return unless column + default = extract_new_default_value(default_or_changes) alter_column_query = "ALTER TABLE #{quote_table_name(table_name)} ALTER COLUMN #{quote_column_name(column_name)} %s" if default.nil? # <tt>DEFAULT NULL</tt> results in the same behavior as <tt>DROP DEFAULT</tt>. However, PostgreSQL will @@ -437,7 +426,7 @@ module ActiveRecord end end - def change_column_null(table_name, column_name, null, default = nil) + def change_column_null(table_name, column_name, null, default = nil) #:nodoc: clear_cache! unless null || default.nil? column = column_for(table_name, column_name) @@ -447,7 +436,7 @@ module ActiveRecord end # Renames a column in a table. - def rename_column(table_name, column_name, new_column_name) + def rename_column(table_name, column_name, new_column_name) #:nodoc: clear_cache! execute "ALTER TABLE #{quote_table_name(table_name)} RENAME COLUMN #{quote_column_name(column_name)} TO #{quote_column_name(new_column_name)}" rename_column_indexes(table_name, column_name, new_column_name) @@ -462,6 +451,8 @@ module ActiveRecord execute "DROP INDEX #{quote_table_name(index_name)}" end + # Renames an index of a table. Raises error if length of new + # index name is greater than allowed limit. def rename_index(table_name, old_name, new_name) validate_index_length!(table_name, new_name) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/type_metadata.rb b/activerecord/lib/active_record/connection_adapters/postgresql/type_metadata.rb index 58715978f7..b2c49989a4 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/type_metadata.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/type_metadata.rb @@ -12,7 +12,7 @@ module ActiveRecord end def sql_type - super.gsub(/\[\]$/, "") + super.gsub(/\[\]$/, "".freeze) end def ==(other) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 332ac9d88c..2c43c46a3d 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -14,8 +14,6 @@ require "active_record/connection_adapters/postgresql/type_metadata" require "active_record/connection_adapters/postgresql/utils" require "active_record/connection_adapters/statement_pool" -require 'arel/visitors/bind_visitor' - require 'ipaddr' module ActiveRecord @@ -68,11 +66,11 @@ module ActiveRecord # defaults to true. # # Any further options are used as connection parameters to libpq. See - # http://www.postgresql.org/docs/9.1/static/libpq-connect.html for the + # http://www.postgresql.org/docs/current/static/libpq-connect.html for the # list of parameters. # # In addition, default connection parameters of libpq can be set per environment variables. - # See http://www.postgresql.org/docs/9.1/static/libpq-envars.html . + # See http://www.postgresql.org/docs/current/static/libpq-envars.html . class PostgreSQLAdapter < AbstractAdapter ADAPTER_NAME = 'PostgreSQL'.freeze @@ -211,44 +209,18 @@ module ActiveRecord def initialize(connection, max) super @counter = 0 - @cache = Hash.new { |h,pid| h[pid] = {} } end - def each(&block); cache.each(&block); end - def key?(key); cache.key?(key); end - def [](key); cache[key]; end - def length; cache.length; end - def next_key "a#{@counter + 1}" end def []=(sql, key) - while @max <= cache.size - dealloc(cache.shift.last) - end - @counter += 1 - cache[sql] = key - end - - def clear - cache.each_value do |stmt_key| - dealloc stmt_key - end - cache.clear - end - - def delete(sql_key) - dealloc cache[sql_key] - cache.delete sql_key + super.tap { @counter += 1 } end private - def cache - @cache[Process.pid] - end - def dealloc(key) @connection.query "DEALLOCATE #{key}" if connection_active? end @@ -452,7 +424,7 @@ module ActiveRecord @connection.server_version end - # See http://www.postgresql.org/docs/9.1/static/errcodes-appendix.html + # See http://www.postgresql.org/docs/current/static/errcodes-appendix.html FOREIGN_KEY_VIOLATION = "23503" UNIQUE_VIOLATION = "23505" @@ -726,7 +698,7 @@ module ActiveRecord end # SET statements from :variables config hash - # http://www.postgresql.org/docs/8.3/static/sql-set.html + # http://www.postgresql.org/docs/current/static/sql-set.html variables = @config[:variables] || {} variables.map do |k, v| if v == ':default' || v == :default @@ -770,9 +742,11 @@ module ActiveRecord # - format_type includes the column size constraint, e.g. varchar(50) # - ::regclass is a function that gives the id for a table name def column_definitions(table_name) # :nodoc: - exec_query(<<-end_sql, 'SCHEMA').rows + query(<<-end_sql, 'SCHEMA') SELECT a.attname, format_type(a.atttypid, a.atttypmod), - pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod + pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod, + (SELECT c.collname FROM pg_collation c, pg_type t + WHERE c.oid = a.attcollation AND t.oid = a.atttypid AND a.attcollation <> t.typcollation) FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE a.attrelid = '#{quote_table_name(table_name)}'::regclass @@ -864,6 +838,8 @@ module ActiveRecord ActiveRecord::Type.register(:jsonb, OID::Jsonb, adapter: :postgresql) ActiveRecord::Type.register(:money, OID::Money, adapter: :postgresql) ActiveRecord::Type.register(:point, OID::Point, adapter: :postgresql) + ActiveRecord::Type.register(:legacy_point, OID::Point, adapter: :postgresql) + ActiveRecord::Type.register(:rails_5_1_point, OID::Rails51Point, adapter: :postgresql) ActiveRecord::Type.register(:uuid, OID::Uuid, adapter: :postgresql) ActiveRecord::Type.register(:vector, OID::Vector, adapter: :postgresql) ActiveRecord::Type.register(:xml, OID::Xml, adapter: :postgresql) diff --git a/activerecord/lib/active_record/connection_adapters/schema_cache.rb b/activerecord/lib/active_record/connection_adapters/schema_cache.rb index 37ff4e4613..981d5d7a3c 100644 --- a/activerecord/lib/active_record/connection_adapters/schema_cache.rb +++ b/activerecord/lib/active_record/connection_adapters/schema_cache.rb @@ -13,6 +13,14 @@ module ActiveRecord @tables = {} end + def initialize_dup(other) + super + @columns = @columns.dup + @columns_hash = @columns_hash.dup + @primary_keys = @primary_keys.dup + @tables = @tables.dup + end + def primary_keys(table_name) @primary_keys[table_name] ||= table_exists?(table_name) ? connection.primary_key(table_name) : nil end diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3/schema_creation.rb b/activerecord/lib/active_record/connection_adapters/sqlite3/schema_creation.rb new file mode 100644 index 0000000000..fe1dcbd710 --- /dev/null +++ b/activerecord/lib/active_record/connection_adapters/sqlite3/schema_creation.rb @@ -0,0 +1,15 @@ +module ActiveRecord + module ConnectionAdapters + module SQLite3 + class SchemaCreation < AbstractAdapter::SchemaCreation + private + def add_column_options!(sql, options) + if options[:collation] + sql << " COLLATE \"#{options[:collation]}\"" + end + super + end + end + end + end +end diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb index 7e184dd510..358039723f 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb @@ -1,6 +1,6 @@ require 'active_record/connection_adapters/abstract_adapter' require 'active_record/connection_adapters/statement_pool' -require 'arel/visitors/bind_visitor' +require 'active_record/connection_adapters/sqlite3/schema_creation' gem 'sqlite3', '~> 1.3.6' require 'sqlite3' @@ -65,53 +65,18 @@ module ActiveRecord boolean: { name: "boolean" } } - class Version - include Comparable - - def initialize(version_string) - @version = version_string.split('.').map(&:to_i) - end - - def <=>(version_string) - @version <=> version_string.split('.').map(&:to_i) - end - end - class StatementPool < ConnectionAdapters::StatementPool - def initialize(connection, max) - super - @cache = Hash.new { |h,pid| h[pid] = {} } - end - - def each(&block); cache.each(&block); end - def key?(key); cache.key?(key); end - def [](key); cache[key]; end - def length; cache.length; end - - def []=(sql, key) - while @max <= cache.size - dealloc(cache.shift.last[:stmt]) - end - cache[sql] = key - end - - def clear - cache.each_value do |hash| - dealloc hash[:stmt] - end - cache.clear - end - private - def cache - @cache[$$] - end def dealloc(stmt) - stmt.close unless stmt.closed? + stmt[:stmt].close unless stmt[:stmt].closed? end end + def schema_creation # :nodoc: + SQLite3::SchemaCreation.new self + end + def initialize(connection, logger, connection_options, config) super(connection, logger) @@ -372,9 +337,10 @@ module ActiveRecord field["dflt_value"] = $1.gsub('""', '"') end + collation = field['collation'] sql_type = field['type'] type_metadata = fetch_type_metadata(sql_type) - new_column(field['name'], field['dflt_value'], type_metadata, field['notnull'].to_i == 0) + new_column(field['name'], field['dflt_value'], type_metadata, field['notnull'].to_i == 0, nil, collation) end end @@ -444,13 +410,15 @@ module ActiveRecord end end - def change_column_default(table_name, column_name, default) #:nodoc: + def change_column_default(table_name, column_name, default_or_changes) #:nodoc: + default = extract_new_default_value(default_or_changes) + alter_table(table_name) do |definition| definition[column_name].default = default end end - def change_column_null(table_name, column_name, null, default = nil) + def change_column_null(table_name, column_name, null, default = nil) #:nodoc: unless null || default.nil? exec_query("UPDATE #{quote_table_name(table_name)} SET #{quote_column_name(column_name)}=#{quote(default)} WHERE #{quote_column_name(column_name)} IS NULL") end @@ -469,6 +437,7 @@ module ActiveRecord self.null = options[:null] if options.include?(:null) self.precision = options[:precision] if options.include?(:precision) self.scale = options[:scale] if options.include?(:scale) + self.collation = options[:collation] if options.include?(:collation) end end end @@ -482,9 +451,9 @@ module ActiveRecord protected def table_structure(table_name) - structure = exec_query("PRAGMA table_info(#{quote_table_name(table_name)})", 'SCHEMA').to_hash + structure = exec_query("PRAGMA table_info(#{quote_table_name(table_name)})", 'SCHEMA') raise(ActiveRecord::StatementInvalid, "Could not find table '#{table_name}'") if structure.empty? - structure + table_structure_with_collation(table_name, structure) end def alter_table(table_name, options = {}) #:nodoc: @@ -519,7 +488,7 @@ module ActiveRecord @definition.column(column_name, column.type, :limit => column.limit, :default => column.default, :precision => column.precision, :scale => column.scale, - :null => column.null) + :null => column.null, collation: column.collation) end yield @definition if block_given? end @@ -581,6 +550,46 @@ module ActiveRecord super end end + + private + COLLATE_REGEX = /.*\"(\w+)\".*collate\s+\"(\w+)\".*/i.freeze + + def table_structure_with_collation(table_name, basic_structure) + collation_hash = {} + sql = "SELECT sql FROM + (SELECT * FROM sqlite_master UNION ALL + SELECT * FROM sqlite_temp_master) + WHERE type='table' and name='#{ table_name }' \;" + + # Result will have following sample string + # CREATE TABLE "users" ("id" INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL, + # "password_digest" varchar COLLATE "NOCASE"); + result = exec_query(sql, 'SCHEMA').first + + if result + # Splitting with left parantheses and picking up last will return all + # columns separated with comma(,). + columns_string = result["sql"].split('(').last + + columns_string.split(',').each do |column_string| + # This regex will match the column name and collation type and will save + # the value in $1 and $2 respectively. + collation_hash[$1] = $2 if (COLLATE_REGEX =~ column_string) + end + + basic_structure.map! do |column| + column_name = column['name'] + + if collation_hash.has_key? column_name + column['collation'] = collation_hash[column_name] + end + + column + end + else + basic_structure.to_hash + end + end end end end diff --git a/activerecord/lib/active_record/connection_adapters/statement_pool.rb b/activerecord/lib/active_record/connection_adapters/statement_pool.rb index c6b1bc8b5b..82e9ef3d3d 100644 --- a/activerecord/lib/active_record/connection_adapters/statement_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/statement_pool.rb @@ -4,35 +4,53 @@ module ActiveRecord include Enumerable def initialize(connection, max = 1000) + @cache = Hash.new { |h,pid| h[pid] = {} } @connection = connection @max = max end - def each - raise NotImplementedError + def each(&block) + cache.each(&block) end def key?(key) - raise NotImplementedError + cache.key?(key) end def [](key) - raise NotImplementedError + cache[key] end def length - raise NotImplementedError + cache.length end - def []=(sql, key) - raise NotImplementedError + def []=(sql, stmt) + while @max <= cache.size + dealloc(cache.shift.last) + end + cache[sql] = stmt end def clear - raise NotImplementedError + cache.each_value do |stmt| + dealloc stmt + end + cache.clear end def delete(key) + dealloc cache[key] + cache.delete(key) + end + + private + + def cache + @cache[Process.pid] + end + + def dealloc(stmt) raise NotImplementedError end end diff --git a/activerecord/lib/active_record/connection_handling.rb b/activerecord/lib/active_record/connection_handling.rb index 24f5849e45..d6b661ff76 100644 --- a/activerecord/lib/active_record/connection_handling.rb +++ b/activerecord/lib/active_record/connection_handling.rb @@ -88,7 +88,7 @@ module ActiveRecord end def connection_id - ActiveRecord::RuntimeRegistry.connection_id + ActiveRecord::RuntimeRegistry.connection_id ||= Thread.current.object_id end def connection_id=(connection_id) diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index 1ad910c4bc..ffce2173ec 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -88,9 +88,10 @@ module ActiveRecord ## # :singleton-method: # Specifies which database schemas to dump when calling db:structure:dump. - # If :schema_search_path (the default), it will dumps any schemas listed in schema_search_path. - # Use :all to always dumps all schemas regardless of the schema_search_path. - # A string of comma separated schemas can also be used to pass a custom list of schemas. + # If the value is :schema_search_path (the default), any schemas listed in + # schema_search_path are dumped. Use :all to dump all schemas regardless + # of schema_search_path, or a string of comma separated schemas for a + # custom list. mattr_accessor :dump_schemas, instance_writer: false self.dump_schemas = :schema_search_path @@ -161,11 +162,13 @@ module ActiveRecord } record = statement.execute([id], self, connection).first unless record - raise RecordNotFound, "Couldn't find #{name} with '#{primary_key}'=#{id}" + raise RecordNotFound.new("Couldn't find #{name} with '#{primary_key}'=#{id}", + name, primary_key, id) end record rescue RangeError - raise RecordNotFound, "Couldn't find #{name} with an out of range value for '#{primary_key}'" + raise RecordNotFound.new("Couldn't find #{name} with an out of range value for '#{primary_key}'", + name, primary_key) end def find_by(*args) # :nodoc: @@ -198,7 +201,7 @@ module ActiveRecord end def find_by!(*args) # :nodoc: - find_by(*args) or raise RecordNotFound.new("Couldn't find #{name}") + find_by(*args) or raise RecordNotFound.new("Couldn't find #{name}", name) end def initialize_generated_modules # :nodoc: @@ -302,7 +305,7 @@ module ActiveRecord assign_attributes(attributes) if attributes yield self if block_given? - run_callbacks :initialize + _run_initialize_callbacks end # Initialize an empty model object from +coder+. +coder+ should be @@ -329,8 +332,8 @@ module ActiveRecord self.class.define_attribute_methods - run_callbacks :find - run_callbacks :initialize + _run_find_callbacks + _run_initialize_callbacks self end @@ -366,7 +369,7 @@ module ActiveRecord @attributes = @attributes.dup @attributes.reset(self.class.primary_key) - run_callbacks(:initialize) + _run_initialize_callbacks @new_record = true @destroyed = false diff --git a/activerecord/lib/active_record/enum.rb b/activerecord/lib/active_record/enum.rb index ea88983917..91a13cb0cd 100644 --- a/activerecord/lib/active_record/enum.rb +++ b/activerecord/lib/active_record/enum.rb @@ -32,7 +32,7 @@ module ActiveRecord # Conversation.active # Conversation.archived # - # Of course, you can also query them directly if the scopes doesn't fit your + # Of course, you can also query them directly if the scopes don't fit your # needs: # # Conversation.where(status: [:active, :archived]) @@ -75,6 +75,24 @@ module ActiveRecord # # Conversation.where("status <> ?", Conversation.statuses[:archived]) # + # You can use the +:_prefix+ or +:_suffix+ options when you need to define + # multiple enums with same values. If the passed value is +true+, the methods + # are prefixed/suffixed with the name of the enum. It is also possible to + # supply a custom value: + # + # class Conversation < ActiveRecord::Base + # enum status: [:active, :archived], _suffix: true + # enum comments_status: [:active, :inactive], _prefix: :comments + # end + # + # With the above example, the bang and predicate methods along with the + # associated scopes are now prefixed and/or suffixed accordingly: + # + # conversation.active_status! + # conversation.archived_status? # => false + # + # conversation.comments_inactive! + # conversation.comments_active? # => false module Enum def self.extended(base) # :nodoc: @@ -121,6 +139,8 @@ module ActiveRecord def enum(definitions) klass = self + enum_prefix = definitions.delete(:_prefix) + enum_suffix = definitions.delete(:_suffix) definitions.each do |name, values| # statuses = { } enum_values = ActiveSupport::HashWithIndifferentAccess.new @@ -138,19 +158,31 @@ module ActiveRecord _enum_methods_module.module_eval do pairs = values.respond_to?(:each_pair) ? values.each_pair : values.each_with_index pairs.each do |value, i| + if enum_prefix == true + prefix = "#{name}_" + elsif enum_prefix + prefix = "#{enum_prefix}_" + end + if enum_suffix == true + suffix = "_#{name}" + elsif enum_suffix + suffix = "_#{enum_suffix}" + end + + value_method_name = "#{prefix}#{value}#{suffix}" enum_values[value] = i # def active?() status == 0 end - klass.send(:detect_enum_conflict!, name, "#{value}?") - define_method("#{value}?") { self[name] == value.to_s } + klass.send(:detect_enum_conflict!, name, "#{value_method_name}?") + define_method("#{value_method_name}?") { self[name] == value.to_s } # def active!() update! status: :active end - klass.send(:detect_enum_conflict!, name, "#{value}!") - define_method("#{value}!") { update! name => value } + klass.send(:detect_enum_conflict!, name, "#{value_method_name}!") + define_method("#{value_method_name}!") { update! name => value } # scope :active, -> { where status: 0 } - klass.send(:detect_enum_conflict!, name, value, true) - klass.scope value, -> { klass.where name => value } + klass.send(:detect_enum_conflict!, name, value_method_name, true) + klass.scope value_method_name, -> { klass.where name => value } end end defined_enums[name.to_s] = enum_values diff --git a/activerecord/lib/active_record/errors.rb b/activerecord/lib/active_record/errors.rb index 98aee77557..d589620f8a 100644 --- a/activerecord/lib/active_record/errors.rb +++ b/activerecord/lib/active_record/errors.rb @@ -47,6 +47,15 @@ module ActiveRecord # Raised when Active Record cannot find record by given id or set of ids. class RecordNotFound < ActiveRecordError + attr_reader :model, :primary_key, :id + + def initialize(message = nil, model = nil, primary_key = nil, id = nil) + @primary_key = primary_key + @model = model + @id = id + + super(message) + end end # Raised by ActiveRecord::Base.save! and ActiveRecord::Base.create! methods when record cannot be @@ -71,9 +80,9 @@ module ActiveRecord class RecordNotDestroyed < ActiveRecordError attr_reader :record - def initialize(record) + def initialize(message, record = nil) @record = record - super() + super(message) end end diff --git a/activerecord/lib/active_record/explain_subscriber.rb b/activerecord/lib/active_record/explain_subscriber.rb index 6a49936644..9adabd7819 100644 --- a/activerecord/lib/active_record/explain_subscriber.rb +++ b/activerecord/lib/active_record/explain_subscriber.rb @@ -19,7 +19,7 @@ module ActiveRecord # On the other hand, we want to monitor the performance of our real database # queries, not the performance of the access to the query cache. IGNORED_PAYLOADS = %w(SCHEMA EXPLAIN CACHE) - EXPLAINED_SQLS = /\A\s*(select|update|delete|insert)\b/i + EXPLAINED_SQLS = /\A\s*(with|select|update|delete|insert)\b/i def ignore_payload?(payload) payload[:exception] || IGNORED_PAYLOADS.include?(payload[:name]) || payload[:sql] !~ EXPLAINED_SQLS end diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb index 2c1771dd6c..f1dc56df63 100644 --- a/activerecord/lib/active_record/fixtures.rb +++ b/activerecord/lib/active_record/fixtures.rb @@ -110,7 +110,7 @@ module ActiveRecord # <% 1.upto(1000) do |i| %> # fix_<%= i %>: # id: <%= i %> - # name: guy_<%= 1 %> + # name: guy_<%= i %> # <% end %> # # This will create 1000 very simple fixtures. @@ -615,7 +615,6 @@ module ActiveRecord # a list of rows to insert to that table. def table_rows now = config.default_timezone == :utc ? Time.now.utc : Time.now - now = now.to_s(:db) # allow a standard key to be used for doing defaults in YAML fixtures.delete('DEFAULTS') @@ -644,6 +643,13 @@ module ActiveRecord row[primary_key_name] = ActiveRecord::FixtureSet.identify(label, primary_key_type) end + # Resolve enums + model_class.defined_enums.each do |name, values| + if row.include?(name) + row[name] = values.fetch(row[name], row[name]) + end + end + # If STI is used, find the correct subclass for association reflection reflection_class = if row.include?(inheritance_column_name) @@ -664,7 +670,7 @@ module ActiveRecord row[association.foreign_type] = $1 end - fk_type = association.active_record.type_for_attribute(fk_name).type + fk_type = reflection_class.type_for_attribute(fk_name).type row[fk_name] = ActiveRecord::FixtureSet.identify(value, fk_type) end when :has_many @@ -821,12 +827,12 @@ module ActiveRecord module TestFixtures extend ActiveSupport::Concern - def before_setup + def before_setup # :nodoc: setup_fixtures super end - def after_teardown + def after_teardown # :nodoc: super teardown_fixtures end diff --git a/activerecord/lib/active_record/inheritance.rb b/activerecord/lib/active_record/inheritance.rb index 24098f72dc..e613d157aa 100644 --- a/activerecord/lib/active_record/inheritance.rb +++ b/activerecord/lib/active_record/inheritance.rb @@ -198,14 +198,16 @@ module ActiveRecord def subclass_from_attributes(attrs) subclass_name = attrs.with_indifferent_access[inheritance_column] - if subclass_name.present? && subclass_name != self.name - subclass = subclass_name.safe_constantize + if subclass_name.present? + subclass = find_sti_class(subclass_name) - unless descendants.include?(subclass) - raise ActiveRecord::SubclassNotFound.new("Invalid single-table inheritance type: #{subclass_name} is not a subclass of #{name}") - end + if subclass.name != self.name + unless descendants.include?(subclass) + raise ActiveRecord::SubclassNotFound.new("Invalid single-table inheritance type: #{subclass.name} is not a subclass of #{name}") + end - subclass + subclass + end end end end diff --git a/activerecord/lib/active_record/locale/en.yml b/activerecord/lib/active_record/locale/en.yml index 8a3c27e6da..0b35027b2b 100644 --- a/activerecord/lib/active_record/locale/en.yml +++ b/activerecord/lib/active_record/locale/en.yml @@ -16,8 +16,8 @@ en: messages: record_invalid: "Validation failed: %{errors}" restrict_dependent_destroy: - one: "Cannot delete record because a dependent %{record} exists" - many: "Cannot delete record because dependent %{record} exist" + has_one: "Cannot delete record because a dependent %{record} exists" + has_many: "Cannot delete record because dependent %{record} exist" # Append your own errors here or at the model/attributes scope. # You can define own errors for models or model attributes. diff --git a/activerecord/lib/active_record/log_subscriber.rb b/activerecord/lib/active_record/log_subscriber.rb index af816a278e..4d597a0ab1 100644 --- a/activerecord/lib/active_record/log_subscriber.rb +++ b/activerecord/lib/active_record/log_subscriber.rb @@ -47,18 +47,21 @@ module ActiveRecord binds = " " + payload[:binds].map { |attr| render_bind(attr) }.inspect end - if odd? - name = color(name, CYAN, true) - sql = color(sql, nil, true) - else - name = color(name, MAGENTA, true) - end + name = color(name, nil, true) + sql = color(sql, sql_color(sql), true) debug " #{name} #{sql}#{binds}" end - def odd? - @odd = !@odd + def sql_color(sql) + case sql + when /\s*\Ainsert/i then GREEN + when /\s*\Aselect/i then BLUE + when /\s*\Aupdate/i then YELLOW + when /\s*\Adelete/i then RED + when /transaction\s*\Z/i then CYAN + else MAGENTA + end end def logger diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index a83b90a95f..b7b508d853 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -138,10 +138,13 @@ module ActiveRecord # <tt>:name</tt>, <tt>:unique</tt> (e.g. # <tt>{ name: 'users_name_index', unique: true }</tt>) and <tt>:order</tt> # (e.g. <tt>{ order: { name: :desc } }</tt>). - # * <tt>remove_index(table_name, column: column_name)</tt>: Removes the index - # specified by +column_name+. + # * <tt>remove_index(table_name, column: column_names)</tt>: Removes the index + # specified by +column_names+. # * <tt>remove_index(table_name, name: index_name)</tt>: Removes the index # specified by +index_name+. + # * <tt>add_reference(:table_name, :reference_name)</tt>: Adds a new column + # +reference_name_id+ by default a integer. See + # ActiveRecord::ConnectionAdapters::SchemaStatements#add_reference for details. # # == Irreversible transformations # @@ -275,21 +278,6 @@ module ActiveRecord # The phrase "Updating salaries..." would then be printed, along with the # benchmark for the block when the block completes. # - # == About the schema_migrations table - # - # Rails versions 2.0 and prior used to create a table called - # <tt>schema_info</tt> when using migrations. This table contained the - # version of the schema as of the last applied migration. - # - # Starting with Rails 2.1, the <tt>schema_info</tt> table is - # (automatically) replaced by the <tt>schema_migrations</tt> table, which - # contains the version numbers of all the migrations applied. - # - # As a result, it is now possible to add migration files that are numbered - # lower than the current schema version: when migrating up, those - # never-applied "interleaved" migrations will be automatically applied, and - # when migrating down, never-applied "interleaved" migrations will be skipped. - # # == Timestamped Migrations # # By default, Rails generates migrations that look like: @@ -307,9 +295,8 @@ module ActiveRecord # # == Reversible Migrations # - # Starting with Rails 3.1, you will be able to define reversible migrations. # Reversible migrations are migrations that know how to go +down+ for you. - # You simply supply the +up+ logic, and the Migration system will figure out + # You simply supply the +up+ logic, and the Migration system figures out # how to execute the down commands for you. # # To define a reversible migration, define the +change+ method in your @@ -653,7 +640,8 @@ module ActiveRecord unless @connection.respond_to? :revert unless arguments.empty? || [:execute, :enable_extension, :disable_extension].include?(method) arguments[0] = proper_table_name(arguments.first, table_name_options) - if [:rename_table, :add_foreign_key].include?(method) + if [:rename_table, :add_foreign_key].include?(method) || + (method == :remove_foreign_key && !arguments.second.is_a?(Hash)) arguments[1] = proper_table_name(arguments.second, table_name_options) end end @@ -728,7 +716,9 @@ module ActiveRecord end end - def table_name_options(config = ActiveRecord::Base) + # Builds a hash for use in ActiveRecord::Migration#proper_table_name using + # the Active Record object's table_name prefix and suffix + def table_name_options(config = ActiveRecord::Base) #:nodoc: { table_name_prefix: config.table_name_prefix, table_name_suffix: config.table_name_suffix diff --git a/activerecord/lib/active_record/migration/command_recorder.rb b/activerecord/lib/active_record/migration/command_recorder.rb index 36256415df..dcc2362397 100644 --- a/activerecord/lib/active_record/migration/command_recorder.rb +++ b/activerecord/lib/active_record/migration/command_recorder.rb @@ -72,7 +72,7 @@ module ActiveRecord [:create_table, :create_join_table, :rename_table, :add_column, :remove_column, :rename_index, :rename_column, :add_index, :remove_index, :add_timestamps, :remove_timestamps, - :change_column_default, :add_reference, :remove_reference, :transaction, + :add_reference, :remove_reference, :transaction, :drop_join_table, :drop_table, :execute_block, :enable_extension, :change_column, :execute, :remove_columns, :change_column_null, :add_foreign_key, :remove_foreign_key @@ -151,19 +151,31 @@ module ActiveRecord end def invert_remove_index(args) - table, options = *args - - unless options && options.is_a?(Hash) && options[:column] - raise ActiveRecord::IrreversibleMigration, "remove_index is only reversible if given a :column option." + table, options_or_column = *args + if (options = options_or_column).is_a?(Hash) + unless options[:column] + raise ActiveRecord::IrreversibleMigration, "remove_index is only reversible if given a :column option." + end + options = options.dup + [:add_index, [table, options.delete(:column), options]] + elsif (column = options_or_column).present? + [:add_index, [table, column]] end - - options = options.dup - [:add_index, [table, options.delete(:column), options]] end alias :invert_add_belongs_to :invert_add_reference alias :invert_remove_belongs_to :invert_remove_reference + def invert_change_column_default(args) + table, column, options = *args + + unless options && options.is_a?(Hash) && options.has_key?(:from) && options.has_key?(:to) + raise ActiveRecord::IrreversibleMigration, "change_column_default is only reversible if given a :from and :to option." + end + + [:change_column_default, [table, column, from: options[:to], to: options[:from]]] + end + def invert_change_column_null(args) args[2] = !args[2] [:change_column_null, args] @@ -184,6 +196,16 @@ module ActiveRecord [:remove_foreign_key, [from_table, options]] end + def invert_remove_foreign_key(args) + from_table, to_table, remove_options = args + raise ActiveRecord::IrreversibleMigration, "remove_foreign_key is only reversible if given a second table" if to_table.nil? || to_table.is_a?(Hash) + + reversed_args = [from_table, to_table] + reversed_args << remove_options if remove_options + + [:add_foreign_key, reversed_args] + end + # Forwards any missing method call to the \target. def method_missing(method, *args, &block) if @delegate.respond_to?(method) diff --git a/activerecord/lib/active_record/model_schema.rb b/activerecord/lib/active_record/model_schema.rb index 3674f672cb..5a6f42ba09 100644 --- a/activerecord/lib/active_record/model_schema.rb +++ b/activerecord/lib/active_record/model_schema.rb @@ -310,6 +310,7 @@ module ActiveRecord def load_schema! @columns_hash = connection.schema_cache.columns_hash(table_name) @columns_hash.each do |name, column| + warn_if_deprecated_type(column) define_attribute( name, connection.lookup_cast_type_from_column(column), @@ -356,6 +357,28 @@ module ActiveRecord base.table_name end end + + def warn_if_deprecated_type(column) + return if attributes_to_define_after_schema_loads.key?(column.name) + if column.respond_to?(:oid) && column.sql_type.start_with?("point") + if column.array? + array_arguments = ", array: true" + else + array_arguments = "" + end + ActiveSupport::Deprecation.warn(<<-WARNING.strip_heredoc) + The behavior of the `:point` type will be changing in Rails 5.1 to + return a `Point` object, rather than an `Array`. If you'd like to + keep the old behavior, you can add this line to #{self.name}: + + attribute :#{column.name}, :legacy_point#{array_arguments} + + If you'd like the new behavior today, you can add this line: + + attribute :#{column.name}, :rails_5_1_point#{array_arguments} + WARNING + end + end end end end diff --git a/activerecord/lib/active_record/nested_attributes.rb b/activerecord/lib/active_record/nested_attributes.rb index 084ef397a8..c5a1488588 100644 --- a/activerecord/lib/active_record/nested_attributes.rb +++ b/activerecord/lib/active_record/nested_attributes.rb @@ -147,8 +147,8 @@ module ActiveRecord # has_many :posts # accepts_nested_attributes_for :posts, reject_if: :reject_posts # - # def reject_posts(attributed) - # attributed['title'].blank? + # def reject_posts(attributes) + # attributes['title'].blank? # end # end # @@ -166,6 +166,11 @@ module ActiveRecord # member.posts.first.title # => '[UPDATED] An, as of yet, undisclosed awesome Ruby documentation browser!' # member.posts.second.title # => '[UPDATED] other post' # + # However, the above applies if the parent model is being updated as well. + # For example, If you wanted to create a +member+ named _joe_ and wanted to + # update the +posts+ at the same time, that would give an + # ActiveRecord::RecordNotFound error. + # # By default the associated records are protected from being destroyed. If # you want to destroy any of the associated records through the attributes # hash, you have to enable it first using the <tt>:allow_destroy</tt> @@ -208,7 +213,7 @@ module ActiveRecord # # Passing attributes for an associated collection in the form of a hash # of hashes can be used with hashes generated from HTTP/HTML parameters, - # where there maybe no natural way to submit an array of hashes. + # where there may be no natural way to submit an array of hashes. # # === Saving # @@ -381,6 +386,9 @@ module ActiveRecord # then the existing record will be marked for destruction. def assign_nested_attributes_for_one_to_one_association(association_name, attributes) options = self.nested_attributes_options[association_name] + if attributes.respond_to?(:permitted?) + attributes = attributes.to_h + end attributes = attributes.with_indifferent_access existing_record = send(association_name) @@ -437,6 +445,9 @@ module ActiveRecord # ]) def assign_nested_attributes_for_collection_association(association_name, attributes_collection) options = self.nested_attributes_options[association_name] + if attributes_collection.respond_to?(:permitted?) + attributes_collection = attributes_collection.to_h + end unless attributes_collection.is_a?(Hash) || attributes_collection.is_a?(Array) raise ArgumentError, "Hash or Array expected, got #{attributes_collection.class.name} (#{attributes_collection.inspect})" @@ -463,6 +474,9 @@ module ActiveRecord end attributes_collection.each do |attributes| + if attributes.respond_to?(:permitted?) + attributes = attributes.to_h + end attributes = attributes.with_indifferent_access if attributes['id'].blank? @@ -547,7 +561,9 @@ module ActiveRecord end def raise_nested_attributes_record_not_found!(association_name, record_id) - raise RecordNotFound, "Couldn't find #{self.class._reflect_on_association(association_name).klass.name} with ID=#{record_id} for #{self.class.name} with ID=#{id}" + model = self.class._reflect_on_association(association_name).klass.name + raise RecordNotFound.new("Couldn't find #{model} with ID=#{record_id} for #{self.class.name} with ID=#{id}", + model, 'id', record_id) end end end diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb index a1e1073792..09c36d7b4d 100644 --- a/activerecord/lib/active_record/persistence.rb +++ b/activerecord/lib/active_record/persistence.rb @@ -148,7 +148,7 @@ module ActiveRecord # Attributes marked as readonly are silently ignored if the record is # being updated. def save!(*args) - create_or_update(*args) || raise(RecordNotSaved.new(nil, self)) + create_or_update(*args) || raise(RecordNotSaved.new("Failed to save the record", self)) end # Deletes the record in the database and freezes this instance to @@ -193,7 +193,7 @@ module ActiveRecord # and #destroy! raises ActiveRecord::RecordNotDestroyed. # See ActiveRecord::Callbacks for further details. def destroy! - destroy || raise(ActiveRecord::RecordNotDestroyed, self) + destroy || _raise_record_not_destroyed end # Returns an instance of the specified +klass+ with the attributes of the @@ -205,12 +205,13 @@ module ActiveRecord # instance using the companies/company partial instead of clients/client. # # Note: The new instance will share a link to the same attributes as the original class. - # So any change to the attributes in either instance will affect the other. + # Therefore the sti column value will still be the same. + # Any change to the attributes on either instance will affect both instances. + # If you want to change the sti column as well, use +becomes!+ instead. def becomes(klass) became = klass.new became.instance_variable_set("@attributes", @attributes) - changed_attributes = @changed_attributes if defined?(@changed_attributes) - became.instance_variable_set("@changed_attributes", changed_attributes || {}) + became.instance_variable_set("@changed_attributes", attributes_changed_by_setter) became.instance_variable_set("@new_record", new_record?) became.instance_variable_set("@destroyed", destroyed?) became.instance_variable_set("@errors", errors) @@ -380,7 +381,7 @@ module ActiveRecord # # => #<Account id: 1, email: 'account@example.com'> # # Attributes are reloaded from the database, and caches busted, in - # particular the associations cache. + # particular the associations cache and the QueryCache. # # If the record no longer exists in the database <tt>ActiveRecord::RecordNotFound</tt> # is raised. Otherwise, in addition to the in-place modification the method @@ -416,6 +417,8 @@ module ActiveRecord # end # def reload(options = nil) + self.class.connection.clear_query_cache + fresh_object = if options && options[:lock] self.class.unscoped { self.class.lock(options[:lock]).find(id) } @@ -428,7 +431,7 @@ module ActiveRecord self end - # Saves the record with the updated_at/on attributes set to the current time + # Saves the record with the updated_at/on attributes set to the current time # or the time specified. # Please note that no validation is performed and only the +after_touch+, # +after_commit+ and +after_rollback+ callbacks are executed. @@ -477,11 +480,23 @@ module ActiveRecord changes[column] = write_attribute(column, time) end - changes[self.class.locking_column] = increment_lock if locking_enabled? - clear_attribute_changes(changes.keys) primary_key = self.class.primary_key - self.class.unscoped.where(primary_key => self[primary_key]).update_all(changes) == 1 + scope = self.class.unscoped.where(primary_key => _read_attribute(primary_key)) + + if locking_enabled? + locking_column = self.class.locking_column + scope = scope.where(locking_column => _read_attribute(locking_column)) + changes[locking_column] = increment_lock + end + + result = scope.update_all(changes) == 1 + + if !result && locking_enabled? + raise ActiveRecord::StaleObjectError.new(self, "touch") + end + + result else true end @@ -533,5 +548,12 @@ module ActiveRecord def verify_readonly_attribute(name) raise ActiveRecordError, "#{name} is marked as readonly" if self.class.readonly_attributes.include?(name) end + + def _raise_record_not_destroyed + @_association_destroy_exception ||= nil + raise @_association_destroy_exception || RecordNotDestroyed.new("Failed to destroy the record", self) + ensure + @_association_destroy_exception = nil + end end end diff --git a/activerecord/lib/active_record/querying.rb b/activerecord/lib/active_record/querying.rb index 4e597590e9..87a1988f2f 100644 --- a/activerecord/lib/active_record/querying.rb +++ b/activerecord/lib/active_record/querying.rb @@ -6,7 +6,7 @@ module ActiveRecord delegate :find_or_create_by, :find_or_create_by!, :find_or_initialize_by, to: :all delegate :find_by, :find_by!, to: :all delegate :destroy, :destroy_all, :delete, :delete_all, :update, :update_all, to: :all - delegate :find_each, :find_in_batches, to: :all + delegate :find_each, :find_in_batches, :in_batches, to: :all delegate :select, :group, :order, :except, :reorder, :limit, :offset, :joins, :or, :where, :rewhere, :preload, :eager_load, :includes, :from, :lock, :readonly, :having, :create_with, :uniq, :distinct, :references, :none, :unscope, to: :all diff --git a/activerecord/lib/active_record/railtie.rb b/activerecord/lib/active_record/railtie.rb index 7e907beec0..459d6256fa 100644 --- a/activerecord/lib/active_record/railtie.rb +++ b/activerecord/lib/active_record/railtie.rb @@ -16,11 +16,11 @@ module ActiveRecord config.app_generators.orm :active_record, :migration => true, :timestamps => true - config.app_middleware.insert_after "::ActionDispatch::Callbacks", - "ActiveRecord::QueryCache" + config.app_middleware.insert_after ::ActionDispatch::Callbacks, + ActiveRecord::QueryCache - config.app_middleware.insert_after "::ActionDispatch::Callbacks", - "ActiveRecord::ConnectionAdapters::ConnectionManagement" + config.app_middleware.insert_after ::ActionDispatch::Callbacks, + ActiveRecord::ConnectionAdapters::ConnectionManagement config.action_dispatch.rescue_responses.merge!( 'ActiveRecord::RecordNotFound' => :not_found, @@ -78,7 +78,7 @@ module ActiveRecord initializer "active_record.migration_error" do if config.active_record.delete(:migration_error) == :page_load - config.app_middleware.insert_after "::ActionDispatch::Callbacks", + config.app_middleware.insert_after ::ActionDispatch::Callbacks, "ActiveRecord::Migration::CheckPending" end end @@ -93,6 +93,7 @@ module ActiveRecord cache = Marshal.load File.binread filename if cache.version == ActiveRecord::Migrator.current_version self.connection.schema_cache = cache + self.connection_pool.schema_cache = cache.dup else warn "Ignoring db/schema_cache.dump because it has expired. The current schema version is #{ActiveRecord::Migrator.current_version}, but the one in the cache is #{cache.version}." end @@ -155,8 +156,8 @@ end_warning ActiveSupport.on_load(:active_record) do ActionDispatch::Reloader.send(hook) do if ActiveRecord::Base.connected? - ActiveRecord::Base.clear_reloadable_connections! ActiveRecord::Base.clear_cache! + ActiveRecord::Base.clear_reloadable_connections! end end end diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake index 2591e7492d..6a72d528b4 100644 --- a/activerecord/lib/active_record/railties/databases.rake +++ b/activerecord/lib/active_record/railties/databases.rake @@ -12,7 +12,7 @@ db_namespace = namespace :db do end end - desc 'Creates the database from DATABASE_URL or config/database.yml for the current RAILS_ENV (use db:create:all to create all databases in the config). Without RAILS_ENV it defaults to creating the development and test databases.' + desc 'Creates the database from DATABASE_URL or config/database.yml for the current RAILS_ENV (use db:create:all to create all databases in the config). Without RAILS_ENV, it defaults to creating the development and test databases.' task :create => [:load_config] do ActiveRecord::Tasks::DatabaseTasks.create_current end @@ -23,7 +23,7 @@ db_namespace = namespace :db do end end - desc 'Drops the database from DATABASE_URL or config/database.yml for the current RAILS_ENV (use db:drop:all to drop all databases in the config). Without RAILS_ENV it defaults to dropping the development and test databases.' + desc 'Drops the database from DATABASE_URL or config/database.yml for the current RAILS_ENV (use db:drop:all to drop all databases in the config). Without RAILS_ENV, it defaults to dropping the development and test databases.' task :drop => [:load_config] do ActiveRecord::Tasks::DatabaseTasks.drop_current end @@ -42,15 +42,18 @@ db_namespace = namespace :db do desc "Migrate the database (options: VERSION=x, VERBOSE=false, SCOPE=blog)." task :migrate => [:environment, :load_config] do ActiveRecord::Tasks::DatabaseTasks.migrate - db_namespace['_dump'].invoke if ActiveRecord::Base.dump_schema_after_migration + db_namespace['_dump'].invoke end + # IMPORTANT: This task won't dump the schema if ActiveRecord::Base.dump_schema_after_migration is set to false task :_dump do - case ActiveRecord::Base.schema_format - when :ruby then db_namespace["schema:dump"].invoke - when :sql then db_namespace["structure:dump"].invoke - else - raise "unknown schema format #{ActiveRecord::Base.schema_format}" + if ActiveRecord::Base.dump_schema_after_migration + case ActiveRecord::Base.schema_format + when :ruby then db_namespace["schema:dump"].invoke + when :sql then db_namespace["structure:dump"].invoke + else + raise "unknown schema format #{ActiveRecord::Base.schema_format}" + end end # Allow this task to be called as many times as required. An example is the # migrate:redo task, which calls other two internally that depend on this one. @@ -134,10 +137,7 @@ db_namespace = namespace :db do end # desc 'Drops and recreates the database from db/schema.rb for the current environment and loads the seeds.' - task :reset => [:environment, :load_config] do - db_namespace["drop"].invoke - db_namespace["setup"].invoke - end + task :reset => [ 'db:drop', 'db:setup' ] # desc "Retrieves the charset for the current environment's database" task :charset => [:environment, :load_config] do @@ -159,7 +159,7 @@ db_namespace = namespace :db do end # desc "Raises an error if there are pending migrations" - task :abort_if_pending_migrations => :environment do + task :abort_if_pending_migrations => [:environment, :load_config] do pending_migrations = ActiveRecord::Migrator.open(ActiveRecord::Migrator.migrations_paths).pending_migrations if pending_migrations.any? @@ -171,17 +171,17 @@ db_namespace = namespace :db do end end - desc 'Create the database, load the schema, and initialize with the seed data (use db:reset to also drop the database first)' + desc 'Creates the database, loads the schema, and initializes with the seed data (use db:reset to also drop the database first)' task :setup => ['db:schema:load_if_ruby', 'db:structure:load_if_sql', :seed] - desc 'Load the seed data from db/seeds.rb' + desc 'Loads the seed data from db/seeds.rb' task :seed do db_namespace['abort_if_pending_migrations'].invoke ActiveRecord::Tasks::DatabaseTasks.load_seed end namespace :fixtures do - desc "Load fixtures into the current environment's database. Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures." + desc "Loads fixtures into the current environment's database. Load specific fixtures using FIXTURES=x,y. Load from subdirectory in test/fixtures using FIXTURES_DIR=z. Specify an alternative path (eg. spec/fixtures) using FIXTURES_PATH=spec/fixtures." task :load => [:environment, :load_config] do require 'active_record/fixtures' @@ -229,7 +229,7 @@ db_namespace = namespace :db do end namespace :schema do - desc 'Create a db/schema.rb file that is portable against any DB supported by AR' + desc 'Creates a db/schema.rb file that is portable against any DB supported by AR' task :dump => [:environment, :load_config] do require 'active_record/schema_dumper' filename = ENV['SCHEMA'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, 'schema.rb') @@ -239,8 +239,8 @@ db_namespace = namespace :db do db_namespace['schema:dump'].reenable end - desc 'Load a schema.rb file into the database' - task :load => [:load_config] do + desc 'Loads a schema.rb file into the database' + task :load => [:environment, :load_config] do ActiveRecord::Tasks::DatabaseTasks.load_schema_current(:ruby, ENV['SCHEMA']) end @@ -249,7 +249,7 @@ db_namespace = namespace :db do end namespace :cache do - desc 'Create a db/schema_cache.dump file.' + desc 'Creates a db/schema_cache.dump file.' task :dump => [:environment, :load_config] do con = ActiveRecord::Base.connection filename = File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "schema_cache.dump") @@ -259,7 +259,7 @@ db_namespace = namespace :db do open(filename, 'wb') { |f| f.write(Marshal.dump(con.schema_cache)) } end - desc 'Clear a db/schema_cache.dump file.' + desc 'Clears a db/schema_cache.dump file.' task :clear => [:environment, :load_config] do filename = File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "schema_cache.dump") FileUtils.rm(filename) if File.exist?(filename) @@ -269,7 +269,7 @@ db_namespace = namespace :db do end namespace :structure do - desc 'Dump the database structure to db/structure.sql. Specify another file with SCHEMA=db/my_structure.sql' + desc 'Dumps the database structure to db/structure.sql. Specify another file with SCHEMA=db/my_structure.sql' task :dump => [:environment, :load_config] do filename = ENV['SCHEMA'] || File.join(ActiveRecord::Tasks::DatabaseTasks.db_dir, "structure.sql") current_config = ActiveRecord::Tasks::DatabaseTasks.current_config @@ -285,7 +285,7 @@ db_namespace = namespace :db do db_namespace['structure:dump'].reenable end - desc "Recreate the databases from the structure.sql file" + desc "Recreates the databases from the structure.sql file" task :load => [:load_config] do ActiveRecord::Tasks::DatabaseTasks.load_schema_current(:sql, ENV['SCHEMA']) end diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 4265afc0a5..5360db6a19 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -69,9 +69,11 @@ module ActiveRecord def reflections ref = {} _reflections.each do |name, reflection| - parent_name, parent_reflection = reflection.parent_reflection - if parent_name - ref[parent_name] = parent_reflection + parent_reflection = reflection.parent_reflection + + if parent_reflection + parent_name = parent_reflection.name + ref[parent_name.to_s] = parent_reflection else ref[name] = reflection end @@ -196,7 +198,7 @@ module ActiveRecord @scope = scope @options = options @active_record = active_record - @klass = options[:class] + @klass = options[:anonymous_class] @plural_name = active_record.pluralize_table_names ? name.to_s.pluralize : name.to_s end @@ -204,7 +206,7 @@ module ActiveRecord def autosave=(autosave) @automatic_inverse_of = false @options[:autosave] = autosave - _, parent_reflection = self.parent_reflection + parent_reflection = self.parent_reflection if parent_reflection parent_reflection.autosave = autosave end @@ -272,7 +274,7 @@ module ActiveRecord end attr_reader :type, :foreign_type - attr_accessor :parent_reflection # [:name, Reflection] + attr_accessor :parent_reflection # Reflection def initialize(name, scope, options, active_record) super @@ -635,7 +637,7 @@ module ActiveRecord def initialize(delegate_reflection) @delegate_reflection = delegate_reflection - @klass = delegate_reflection.options[:class] + @klass = delegate_reflection.options[:anonymous_class] @source_reflection_name = delegate_reflection.options[:source] end diff --git a/activerecord/lib/active_record/relation.rb b/activerecord/lib/active_record/relation.rb index 85648a7f8f..e47b7b1ed9 100644 --- a/activerecord/lib/active_record/relation.rb +++ b/activerecord/lib/active_record/relation.rb @@ -9,12 +9,13 @@ module ActiveRecord :extending, :unscope] SINGLE_VALUE_METHODS = [:limit, :offset, :lock, :readonly, :reordering, - :reverse_order, :distinct, :create_with, :uniq] + :reverse_order, :distinct, :create_with] CLAUSE_METHODS = [:where, :having, :from] INVALID_METHODS_FOR_DELETE_ALL = [:limit, :distinct, :offset, :group, :having] VALUE_METHODS = MULTI_VALUE_METHODS + SINGLE_VALUE_METHODS + CLAUSE_METHODS + include Enumerable include FinderMethods, Calculations, SpawnMethods, QueryMethods, Batches, Explain, Delegation attr_reader :table, :klass, :loaded, :predicate_builder @@ -275,38 +276,52 @@ module ActiveRecord # Returns true if there are no records. def none? - if block_given? - to_a.none? { |*block_args| yield(*block_args) } - else - empty? - end + return super if block_given? + empty? end # Returns true if there are any records. def any? - if block_given? - to_a.any? { |*block_args| yield(*block_args) } - else - !empty? - end + return super if block_given? + !empty? end # Returns true if there is exactly one record. def one? - if block_given? - to_a.one? { |*block_args| yield(*block_args) } - else - limit_value ? to_a.one? : size == 1 - end + return super if block_given? + limit_value ? to_a.one? : size == 1 end # Returns true if there is more than one record. def many? - if block_given? - to_a.many? { |*block_args| yield(*block_args) } - else - limit_value ? to_a.many? : size > 1 - end + return super if block_given? + limit_value ? to_a.many? : size > 1 + end + + # Returns a cache key that can be used to identify the records fetched by + # this query. The cache key is built with a fingerprint of the sql query, + # the number of records matched by the query and a timestamp of the last + # updated record. When a new record comes to match the query, or any of + # the existing records is updated or deleted, the cache key changes. + # + # Product.where("name like ?", "%Cosmic Encounter%").cache_key + # => "products/query-1850ab3d302391b85b8693e941286659-1-20150714212553907087000" + # + # If the collection is loaded, the method will iterate through the records + # to generate the timestamp, otherwise it will trigger one SQL query like: + # + # SELECT COUNT(*), MAX("products"."updated_at") FROM "products" WHERE (name like '%Cosmic Encounter%') + # + # You can also pass a custom timestamp column to fetch the timestamp of the + # last updated record. + # + # Product.where("name like ?", "%Game%").cache_key(:last_reviewed_at) + # + # You can customize the strategy to generate the key on a per model basis + # overriding ActiveRecord::Base#collection_cache_key. + def cache_key(timestamp_column = :updated_at) + @cache_keys ||= {} + @cache_keys[timestamp_column] ||= @klass.collection_cache_key(self, timestamp_column) end # Scope all queries to the current scope. @@ -618,6 +633,7 @@ module ActiveRecord def uniq_value distinct_value end + deprecate uniq_value: :distinct_value # Compares two relations for equality. def ==(other) @@ -651,6 +667,13 @@ module ActiveRecord "#<#{self.class.name} [#{entries.join(', ')}]>" end + protected + + def load_records(records) + @records = records + @loaded = true + end + private def exec_queries diff --git a/activerecord/lib/active_record/relation/batches.rb b/activerecord/lib/active_record/relation/batches.rb index e07580a563..beb8fa511c 100644 --- a/activerecord/lib/active_record/relation/batches.rb +++ b/activerecord/lib/active_record/relation/batches.rb @@ -1,3 +1,5 @@ +require "active_record/relation/batches/batch_enumerator" + module ActiveRecord module Batches # Looping through a collection of records from the database @@ -122,24 +124,102 @@ module ActiveRecord end end + in_batches(of: batch_size, begin_at: begin_at, end_at: end_at, load: true) do |batch| + yield batch.to_a + end + end + + # Yields ActiveRecord::Relation objects to work with a batch of records. + # + # Person.where("age > 21").in_batches do |relation| + # relation.delete_all + # sleep(10) # Throttle the delete queries + # end + # + # If you do not provide a block to #in_batches, it will return a + # BatchEnumerator which is enumerable. + # + # Person.in_batches.with_index do |relation, batch_index| + # puts "Processing relation ##{batch_index}" + # relation.each { |relation| relation.delete_all } + # end + # + # Examples of calling methods on the returned BatchEnumerator object: + # + # Person.in_batches.delete_all + # Person.in_batches.update_all(awesome: true) + # Person.in_batches.each_record(&:party_all_night!) + # + # ==== Options + # * <tt>:of</tt> - Specifies the size of the batch. Default to 1000. + # * <tt>:load</tt> - Specifies if the relation should be loaded. Default to false. + # * <tt>:begin_at</tt> - Specifies the primary key value to start from, inclusive of the value. + # * <tt>:end_at</tt> - Specifies the primary key value to end at, inclusive of the value. + # + # This is especially useful if you want to work with the + # ActiveRecord::Relation object instead of the array of records, or if + # you want multiple workers dealing with the same processing queue. You can + # make worker 1 handle all the records between id 0 and 10,000 and worker 2 + # handle from 10,000 and beyond (by setting the +:begin_at+ and +:end_at+ + # option on each worker). + # + # # Let's process the next 2000 records + # Person.in_batches(of: 2000, begin_at: 2000).update_all(awesome: true) + # + # An example of calling where query method on the relation: + # + # Person.in_batches.each do |relation| + # relation.update_all('age = age + 1') + # relation.where('age > 21').update_all(should_party: true) + # relation.where('age <= 21').delete_all + # end + # + # NOTE: If you are going to iterate through each record, you should call + # #each_record on the yielded BatchEnumerator: + # + # Person.in_batches.each_record(&:party_all_night!) + # + # NOTE: It's not possible to set the order. That is automatically set to + # ascending on the primary key ("id ASC") to make the batch ordering + # consistent. Therefore the primary key must be orderable, e.g an integer + # or a string. + # + # NOTE: You can't set the limit either, that's used to control the batch + # sizes. + def in_batches(of: 1000, begin_at: nil, end_at: nil, load: false) + relation = self + unless block_given? + return BatchEnumerator.new(of: of, begin_at: begin_at, end_at: end_at, relation: self) + end + if logger && (arel.orders.present? || arel.taken.present?) logger.warn("Scoped order and limit are ignored, it's forced to be batch order and batch size") end - relation = relation.reorder(batch_order).limit(batch_size) + relation = relation.reorder(batch_order).limit(of) relation = apply_limits(relation, begin_at, end_at) - records = relation.to_a + batch_relation = relation + + loop do + if load + records = batch_relation.to_a + ids = records.map(&:id) + yielded_relation = self.where(primary_key => ids) + yielded_relation.load_records(records) + else + ids = batch_relation.pluck(primary_key) + yielded_relation = self.where(primary_key => ids) + end - while records.any? - records_size = records.size - primary_key_offset = records.last.id - raise "Primary key not included in the custom select clause" unless primary_key_offset + break if ids.empty? - yield records + primary_key_offset = ids.last + raise ArgumentError.new("Primary key not included in the custom select clause") unless primary_key_offset - break if records_size < batch_size + yield yielded_relation - records = relation.where(table[primary_key].gt(primary_key_offset)).to_a + break if ids.length < of + batch_relation = relation.where(table[primary_key].gt(primary_key_offset)) end end diff --git a/activerecord/lib/active_record/relation/batches/batch_enumerator.rb b/activerecord/lib/active_record/relation/batches/batch_enumerator.rb new file mode 100644 index 0000000000..153aae9584 --- /dev/null +++ b/activerecord/lib/active_record/relation/batches/batch_enumerator.rb @@ -0,0 +1,67 @@ +module ActiveRecord + module Batches + class BatchEnumerator + include Enumerable + + def initialize(of: 1000, begin_at: nil, end_at: nil, relation:) #:nodoc: + @of = of + @relation = relation + @begin_at = begin_at + @end_at = end_at + end + + # Looping through a collection of records from the database (using the + # +all+ method, for example) is very inefficient since it will try to + # instantiate all the objects at once. + # + # In that case, batch processing methods allow you to work with the + # records in batches, thereby greatly reducing memory consumption. + # + # Person.in_batches.each_record do |person| + # person.do_awesome_stuff + # end + # + # Person.where("age > 21").in_batches(of: 10).each_record do |person| + # person.party_all_night! + # end + # + # If you do not provide a block to #each_record, it will return an Enumerator + # for chaining with other methods: + # + # Person.in_batches.each_record.with_index do |person, index| + # person.award_trophy(index + 1) + # end + def each_record + return to_enum(:each_record) unless block_given? + + @relation.to_enum(:in_batches, of: @of, begin_at: @begin_at, end_at: @end_at, load: true).each do |relation| + relation.to_a.each { |record| yield record } + end + end + + # Delegates #delete_all, #update_all, #destroy_all methods to each batch. + # + # People.in_batches.delete_all + # People.in_batches.destroy_all('age < 10') + # People.in_batches.update_all('age = age + 1') + [:delete_all, :update_all, :destroy_all].each do |method| + define_method(method) do |*args, &block| + @relation.to_enum(:in_batches, of: @of, begin_at: @begin_at, end_at: @end_at, load: false).each do |relation| + relation.send(method, *args, &block) + end + end + end + + # Yields an ActiveRecord::Relation object for each batch of records. + # + # Person.in_batches.each do |relation| + # relation.update_all(awesome: true) + # end + def each + enum = @relation.to_enum(:in_batches, of: @of, begin_at: @begin_at, end_at: @end_at, load: false) + return enum.each { |relation| yield relation } if block_given? + enum + end + end + end +end diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 8f16de3519..0f6015fa93 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -71,6 +71,7 @@ module ActiveRecord # # Person.sum(:age) # => 4562 def sum(*args) + return super if block_given? calculate(:sum, *args) end @@ -130,15 +131,15 @@ module ActiveRecord # the plucked column names, if they can be deduced. Plucking an SQL fragment # returns String values by default. # - # Person.pluck(:id) - # # SELECT people.id FROM people - # # => [1, 2, 3] + # Person.pluck(:name) + # # SELECT people.name FROM people + # # => ['David', 'Jeremy', 'Jose'] # # Person.pluck(:id, :name) # # SELECT people.id, people.name FROM people # # => [[1, 'David'], [2, 'Jeremy'], [3, 'Jose']] # - # Person.pluck('DISTINCT role') + # Person.distinct.pluck(:role) # # SELECT DISTINCT role FROM people # # => ['admin', 'member', 'guest'] # @@ -150,6 +151,8 @@ module ActiveRecord # # SELECT DATEDIFF(updated_at, created_at) FROM people # # => ['0', '27761', '173'] # + # See also +ids+. + # def pluck(*column_names) column_names.map! do |column_name| if column_name.is_a?(Symbol) && attribute_alias?(column_name) @@ -159,6 +162,10 @@ module ActiveRecord end end + if loaded? && (column_names - @klass.column_names).empty? + return @records.pluck(*column_names) + end + if has_include?(column_names.first) construct_relation_for_association_calculations.pluck(*column_names) else @@ -188,7 +195,8 @@ module ActiveRecord def perform_calculation(operation, column_name) operation = operation.to_s.downcase - # If #count is used with #distinct / #uniq it is considered distinct. (eg. relation.distinct.count) + # If #count is used with #distinct (i.e. `relation.distinct.count`) it is + # considered distinct. distinct = self.distinct_value if operation == "count" diff --git a/activerecord/lib/active_record/relation/delegation.rb b/activerecord/lib/active_record/relation/delegation.rb index d4a8823cfe..d75ec72b1a 100644 --- a/activerecord/lib/active_record/relation/delegation.rb +++ b/activerecord/lib/active_record/relation/delegation.rb @@ -18,7 +18,7 @@ module ActiveRecord delegate = Class.new(klass) { include ClassSpecificRelation } - const_set klass.name.gsub('::', '_'), delegate + const_set klass.name.gsub('::'.freeze, '_'.freeze), delegate cache[klass] = delegate end end @@ -39,7 +39,7 @@ module ActiveRecord BLACKLISTED_ARRAY_METHODS = [ :compact!, :flatten!, :reject!, :reverse!, :rotate!, :map!, :shuffle!, :slice!, :sort!, :sort_by!, :delete_if, - :keep_if, :pop, :shift, :delete_at, :compact, :select! + :keep_if, :pop, :shift, :delete_at, :select! ].to_set # :nodoc: delegate :to_xml, :to_yaml, :length, :collect, :map, :each, :all?, :include?, :to_ary, :join, to: :to_a diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 6a3a56f1cc..009b2bad57 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -46,7 +46,7 @@ module ActiveRecord # # returns the first item or returns a new instance (requires you call .save to persist against the database). # # Person.where(name: 'Spartacus', rating: 4).first_or_create - # # returns the first item or creates it and returns it, available since Rails 3.2.1. + # # returns the first item or creates it and returns it. # # ==== Alternatives for +find+ # @@ -57,16 +57,13 @@ module ActiveRecord # # returns a chainable list of instances with only the mentioned fields. # # Person.where(name: 'Spartacus', rating: 4).ids - # # returns an Array of ids, available since Rails 3.2.1. + # # returns an Array of ids. # # Person.where(name: 'Spartacus', rating: 4).pluck(:field1, :field2) - # # returns an Array of the required fields, available since Rails 3.1. + # # returns an Array of the required fields. def find(*args) - if block_given? - to_a.find(*args) { |*block_args| yield(*block_args) } - else - find_with_ids(*args) - end + return super if block_given? + find_with_ids(*args) end # Finds the first record matching the specified conditions. There @@ -77,18 +74,19 @@ module ActiveRecord # # Post.find_by name: 'Spartacus', rating: 4 # Post.find_by "published_at < ?", 2.weeks.ago - def find_by(*args) - where(*args).take + def find_by(arg, *args) + where(arg, *args).take rescue RangeError nil end # Like <tt>find_by</tt>, except that if no record is found, raises # an <tt>ActiveRecord::RecordNotFound</tt> error. - def find_by!(*args) - where(*args).take! + def find_by!(arg, *args) + where(arg, *args).take! rescue RangeError - raise RecordNotFound, "Couldn't find #{@klass.name} with an out of range value" + raise RecordNotFound.new("Couldn't find #{@klass.name} with an out of range value", + @klass.name) end # Gives a record (or N records if a parameter is supplied) without any implied @@ -111,23 +109,11 @@ module ActiveRecord # Find the first record (or first N records if a parameter is supplied). # If no order is defined it will order by primary key. # - # Person.first # returns the first object fetched by SELECT * FROM people + # Person.first # returns the first object fetched by SELECT * FROM people ORDER BY people.id LIMIT 1 # Person.where(["user_name = ?", user_name]).first # Person.where(["user_name = :u", { u: user_name }]).first # Person.order("created_on DESC").offset(5).first - # Person.first(3) # returns the first three objects fetched by SELECT * FROM people LIMIT 3 - # - # ==== Rails 3 - # - # Person.first # SELECT "people".* FROM "people" LIMIT 1 - # - # NOTE: Rails 3 may not order this query by the primary key and the order - # will depend on the database implementation. In order to ensure that behavior, - # use <tt>User.order(:id).first</tt> instead. - # - # ==== Rails 4 - # - # Person.first # SELECT "people".* FROM "people" ORDER BY "people"."id" ASC LIMIT 1 + # Person.first(3) # returns the first three objects fetched by SELECT * FROM people ORDER BY people.id LIMIT 3 # def first(limit = nil) if limit diff --git a/activerecord/lib/active_record/relation/merger.rb b/activerecord/lib/active_record/relation/merger.rb index 65b607ff1c..0b38666ce9 100644 --- a/activerecord/lib/active_record/relation/merger.rb +++ b/activerecord/lib/active_record/relation/merger.rb @@ -1,5 +1,4 @@ require 'active_support/core_ext/hash/keys' -require "set" module ActiveRecord class Relation @@ -51,7 +50,7 @@ module ActiveRecord NORMAL_VALUES = Relation::VALUE_METHODS - Relation::CLAUSE_METHODS - - [:joins, :order, :reverse_order, :lock, :create_with, :reordering] # :nodoc: + [:includes, :preload, :joins, :order, :reverse_order, :lock, :create_with, :reordering] # :nodoc: def normal_values NORMAL_VALUES @@ -76,6 +75,7 @@ module ActiveRecord merge_multi_values merge_single_values merge_clauses + merge_preloads merge_joins relation @@ -83,6 +83,27 @@ module ActiveRecord private + def merge_preloads + return if other.preload_values.empty? && other.includes_values.empty? + + if other.klass == relation.klass + relation.preload!(*other.preload_values) unless other.preload_values.empty? + relation.includes!(other.includes_values) unless other.includes_values.empty? + else + reflection = relation.klass.reflect_on_all_associations.find do |r| + r.class_name == other.klass.name + end || return + + unless other.preload_values.empty? + relation.preload! reflection.name => other.preload_values + end + + unless other.includes_values.empty? + relation.includes! reflection.name => other.includes_values + end + end + end + def merge_joins return if other.joins_values.blank? diff --git a/activerecord/lib/active_record/relation/predicate_builder.rb b/activerecord/lib/active_record/relation/predicate_builder.rb index 43e9afe853..d26db7d4cf 100644 --- a/activerecord/lib/active_record/relation/predicate_builder.rb +++ b/activerecord/lib/active_record/relation/predicate_builder.rb @@ -52,7 +52,7 @@ module ActiveRecord key else key = key.to_s - key.split('.').first if key.include?('.') + key.split('.'.freeze).first if key.include?('.'.freeze) end end.compact end @@ -123,10 +123,10 @@ module ActiveRecord end def convert_dot_notation_to_hash(attributes) - dot_notation = attributes.keys.select { |s| s.include?(".") } + dot_notation = attributes.keys.select { |s| s.include?(".".freeze) } dot_notation.each do |key| - table_name, column_name = key.split(".") + table_name, column_name = key.split(".".freeze) value = attributes.delete(key) attributes[table_name] ||= {} diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 69ce5cdc2a..706c99c245 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -242,12 +242,9 @@ module ActiveRecord # Model.select(:field).first.other_field # # => ActiveModel::MissingAttributeError: missing attribute: other_field def select(*fields) - if block_given? - to_a.select { |*block_args| yield(*block_args) } - else - raise ArgumentError, 'Call this with at least one field' if fields.empty? - spawn._select!(*fields) - end + return super if block_given? + raise ArgumentError, 'Call this with at least one field' if fields.empty? + spawn._select!(*fields) end def _select!(*fields) # :nodoc: @@ -587,7 +584,7 @@ module ActiveRecord # # The two relations must be structurally compatible: they must be scoping the same model, and # they must differ only by +where+ (if no +group+ has been defined) or +having+ (if a +group+ is - # present). Neither relation may have a +limit+, +offset+, or +uniq+ set. + # present). Neither relation may have a +limit+, +offset+, or +distinct+ set. # # Post.where("id = 1").or(Post.where("id = 2")) # # SELECT `posts`.* FROM `posts` WHERE (('id = 1' OR 'id = 2')) @@ -790,6 +787,7 @@ module ActiveRecord spawn.distinct!(value) end alias uniq distinct + deprecate uniq: :distinct # Like #distinct, but modifies relation in place. def distinct!(value = true) # :nodoc: @@ -797,6 +795,7 @@ module ActiveRecord self end alias uniq! distinct! + deprecate uniq!: :distinct! # Used to extend a scope with additional methods, either through # a module or through a block provided. @@ -999,15 +998,13 @@ module ActiveRecord end def arel_columns(columns) - if from_clause.value - columns - else - columns.map do |field| - if (Symbol === field || String === field) && columns_hash.key?(field.to_s) - arel_table[field] - else - field - end + columns.map do |field| + if (Symbol === field || String === field) && columns_hash.key?(field.to_s) && !from_clause.value + arel_table[field] + elsif Symbol === field + connection.quote_table_name(field.to_s) + else + field end end end diff --git a/activerecord/lib/active_record/relation/where_clause.rb b/activerecord/lib/active_record/relation/where_clause.rb index f9b9e640ec..1f000b3f0f 100644 --- a/activerecord/lib/active_record/relation/where_clause.rb +++ b/activerecord/lib/active_record/relation/where_clause.rb @@ -135,7 +135,7 @@ module ActiveRecord def predicates_except(columns) predicates.reject do |node| case node - when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality, Arel::Nodes::NotEqual, Arel::Nodes::LessThanOrEqual, Arel::Nodes::GreaterThanOrEqual + when Arel::Nodes::Between, Arel::Nodes::In, Arel::Nodes::NotIn, Arel::Nodes::Equality, Arel::Nodes::NotEqual, Arel::Nodes::LessThan, Arel::Nodes::LessThanOrEqual, Arel::Nodes::GreaterThan, Arel::Nodes::GreaterThanOrEqual subrelation = (node.left.kind_of?(Arel::Attributes::Attribute) ? node.left : node.right) columns.include?(subrelation.name.to_s) end diff --git a/activerecord/lib/active_record/sanitization.rb b/activerecord/lib/active_record/sanitization.rb index c7f55ebaa1..ba75ffa5a1 100644 --- a/activerecord/lib/active_record/sanitization.rb +++ b/activerecord/lib/active_record/sanitization.rb @@ -11,17 +11,15 @@ module ActiveRecord protected - # Accepts an array, hash, or string of SQL conditions and sanitizes + # Accepts an array or string of SQL conditions and sanitizes # them into a valid SQL fragment for a WHERE clause. # ["name='%s' and group_id='%s'", "foo'bar", 4] returns "name='foo''bar' and group_id='4'" - # { name: "foo'bar", group_id: 4 } returns "name='foo''bar' and group_id='4'" # "name='foo''bar' and group_id='4'" returns "name='foo''bar' and group_id='4'" def sanitize_sql_for_conditions(condition, table_name = self.table_name) return nil if condition.blank? case condition when Array; sanitize_sql_array(condition) - when Hash; sanitize_sql_hash_for_conditions(condition, table_name) else condition end end @@ -121,9 +119,9 @@ module ActiveRecord end def replace_named_bind_variables(statement, bind_vars) #:nodoc: - statement.gsub(/(:?):([a-zA-Z]\w*)/) do + statement.gsub(/(:?):([a-zA-Z]\w*)/) do |match| if $1 == ':' # skip postgresql casts - $& # return the whole match + match # return the whole match elsif bind_vars.include?(match = $2.to_sym) replace_bind_variable(bind_vars[match]) else diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb index eaeaf0321b..c5910fa1ad 100644 --- a/activerecord/lib/active_record/schema_dumper.rb +++ b/activerecord/lib/active_record/schema_dumper.rb @@ -1,5 +1,4 @@ require 'stringio' -require 'active_support/core_ext/big_decimal' module ActiveRecord # = Active Record Schema Dumper @@ -131,6 +130,10 @@ HEADER tbl.print ", id: false" end tbl.print ", force: :cascade" + + table_options = @connection.table_options(table) + tbl.print ", options: #{table_options.inspect}" unless table_options.blank? + tbl.puts " do |t|" # then dump all non-primary key columns @@ -168,11 +171,11 @@ HEADER tbl.puts end + indexes(table, tbl) + tbl.puts " end" tbl.puts - indexes(table, tbl) - tbl.rewind stream.print tbl.read rescue => e @@ -188,8 +191,7 @@ HEADER if (indexes = @connection.indexes(table)).any? add_index_statements = indexes.map do |index| statement_parts = [ - "add_index #{remove_prefix_and_suffix(index.table).inspect}", - index.columns.inspect, + "t.index #{index.columns.inspect}", "name: #{index.name.inspect}", ] statement_parts << 'unique: true' if index.unique @@ -203,11 +205,10 @@ HEADER statement_parts << "using: #{index.using.inspect}" if index.using statement_parts << "type: #{index.type.inspect}" if index.type - " #{statement_parts.join(', ')}" + " #{statement_parts.join(', ')}" end stream.puts add_index_statements.sort.join("\n") - stream.puts end end diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb index b5038104ac..cb47bf23f7 100644 --- a/activerecord/lib/active_record/schema_migration.rb +++ b/activerecord/lib/active_record/schema_migration.rb @@ -1,6 +1,5 @@ require 'active_record/scoping/default' require 'active_record/scoping/named' -require 'active_record/base' module ActiveRecord class SchemaMigration < ActiveRecord::Base diff --git a/activerecord/lib/active_record/secure_token.rb b/activerecord/lib/active_record/secure_token.rb index a3023a0cb4..ca11853da7 100644 --- a/activerecord/lib/active_record/secure_token.rb +++ b/activerecord/lib/active_record/secure_token.rb @@ -13,7 +13,7 @@ module ActiveRecord # # user = User.new # user.save - # user.token # => "4kUgL2pdQMSCQtjE" + # user.token # => "pX27zsMN2ViQKta1bGfLmVJE" # user.auth_token # => "77TMHrHJFvFDwodq8w7Ev2m7" # user.regenerate_token # => true # user.regenerate_auth_token # => true diff --git a/activerecord/lib/active_record/serialization.rb b/activerecord/lib/active_record/serialization.rb index 48c12dcf9f..23dc6465af 100644 --- a/activerecord/lib/active_record/serialization.rb +++ b/activerecord/lib/active_record/serialization.rb @@ -18,5 +18,3 @@ module ActiveRecord #:nodoc: end end end - -require 'active_record/serializers/xml_serializer' diff --git a/activerecord/lib/active_record/serializers/xml_serializer.rb b/activerecord/lib/active_record/serializers/xml_serializer.rb deleted file mode 100644 index 89b7e0be82..0000000000 --- a/activerecord/lib/active_record/serializers/xml_serializer.rb +++ /dev/null @@ -1,193 +0,0 @@ -require 'active_support/core_ext/hash/conversions' - -module ActiveRecord #:nodoc: - module Serialization - include ActiveModel::Serializers::Xml - - # Builds an XML document to represent the model. Some configuration is - # available through +options+. However more complicated cases should - # override ActiveRecord::Base#to_xml. - # - # By default the generated XML document will include the processing - # instruction and all the object's attributes. For example: - # - # <?xml version="1.0" encoding="UTF-8"?> - # <topic> - # <title>The First Topic</title> - # <author-name>David</author-name> - # <id type="integer">1</id> - # <approved type="boolean">false</approved> - # <replies-count type="integer">0</replies-count> - # <bonus-time type="dateTime">2000-01-01T08:28:00+12:00</bonus-time> - # <written-on type="dateTime">2003-07-16T09:28:00+1200</written-on> - # <content>Have a nice day</content> - # <author-email-address>david@loudthinking.com</author-email-address> - # <parent-id></parent-id> - # <last-read type="date">2004-04-15</last-read> - # </topic> - # - # This behavior can be controlled with <tt>:only</tt>, <tt>:except</tt>, - # <tt>:skip_instruct</tt>, <tt>:skip_types</tt>, <tt>:dasherize</tt> and <tt>:camelize</tt> . - # The <tt>:only</tt> and <tt>:except</tt> options are the same as for the - # +attributes+ method. The default is to dasherize all column names, but you - # can disable this setting <tt>:dasherize</tt> to +false+. Setting <tt>:camelize</tt> - # to +true+ will camelize all column names - this also overrides <tt>:dasherize</tt>. - # To not have the column type included in the XML output set <tt>:skip_types</tt> to +true+. - # - # For instance: - # - # topic.to_xml(skip_instruct: true, except: [ :id, :bonus_time, :written_on, :replies_count ]) - # - # <topic> - # <title>The First Topic</title> - # <author-name>David</author-name> - # <approved type="boolean">false</approved> - # <content>Have a nice day</content> - # <author-email-address>david@loudthinking.com</author-email-address> - # <parent-id></parent-id> - # <last-read type="date">2004-04-15</last-read> - # </topic> - # - # To include first level associations use <tt>:include</tt>: - # - # firm.to_xml include: [ :account, :clients ] - # - # <?xml version="1.0" encoding="UTF-8"?> - # <firm> - # <id type="integer">1</id> - # <rating type="integer">1</rating> - # <name>37signals</name> - # <clients type="array"> - # <client> - # <rating type="integer">1</rating> - # <name>Summit</name> - # </client> - # <client> - # <rating type="integer">1</rating> - # <name>Microsoft</name> - # </client> - # </clients> - # <account> - # <id type="integer">1</id> - # <credit-limit type="integer">50</credit-limit> - # </account> - # </firm> - # - # Additionally, the record being serialized will be passed to a Proc's second - # parameter. This allows for ad hoc additions to the resultant document that - # incorporate the context of the record being serialized. And by leveraging the - # closure created by a Proc, to_xml can be used to add elements that normally fall - # outside of the scope of the model -- for example, generating and appending URLs - # associated with models. - # - # proc = Proc.new { |options, record| options[:builder].tag!('name-reverse', record.name.reverse) } - # firm.to_xml procs: [ proc ] - # - # <firm> - # # ... normal attributes as shown above ... - # <name-reverse>slangis73</name-reverse> - # </firm> - # - # To include deeper levels of associations pass a hash like this: - # - # firm.to_xml include: {account: {}, clients: {include: :address}} - # <?xml version="1.0" encoding="UTF-8"?> - # <firm> - # <id type="integer">1</id> - # <rating type="integer">1</rating> - # <name>37signals</name> - # <clients type="array"> - # <client> - # <rating type="integer">1</rating> - # <name>Summit</name> - # <address> - # ... - # </address> - # </client> - # <client> - # <rating type="integer">1</rating> - # <name>Microsoft</name> - # <address> - # ... - # </address> - # </client> - # </clients> - # <account> - # <id type="integer">1</id> - # <credit-limit type="integer">50</credit-limit> - # </account> - # </firm> - # - # To include any methods on the model being called use <tt>:methods</tt>: - # - # firm.to_xml methods: [ :calculated_earnings, :real_earnings ] - # - # <firm> - # # ... normal attributes as shown above ... - # <calculated-earnings>100000000000000000</calculated-earnings> - # <real-earnings>5</real-earnings> - # </firm> - # - # To call any additional Procs use <tt>:procs</tt>. The Procs are passed a - # modified version of the options hash that was given to +to_xml+: - # - # proc = Proc.new { |options| options[:builder].tag!('abc', 'def') } - # firm.to_xml procs: [ proc ] - # - # <firm> - # # ... normal attributes as shown above ... - # <abc>def</abc> - # </firm> - # - # Alternatively, you can yield the builder object as part of the +to_xml+ call: - # - # firm.to_xml do |xml| - # xml.creator do - # xml.first_name "David" - # xml.last_name "Heinemeier Hansson" - # end - # end - # - # <firm> - # # ... normal attributes as shown above ... - # <creator> - # <first_name>David</first_name> - # <last_name>Heinemeier Hansson</last_name> - # </creator> - # </firm> - # - # As noted above, you may override +to_xml+ in your ActiveRecord::Base - # subclasses to have complete control about what's generated. The general - # form of doing this is: - # - # class IHaveMyOwnXML < ActiveRecord::Base - # def to_xml(options = {}) - # require 'builder' - # options[:indent] ||= 2 - # xml = options[:builder] ||= ::Builder::XmlMarkup.new(indent: options[:indent]) - # xml.instruct! unless options[:skip_instruct] - # xml.level_one do - # xml.tag!(:second_level, 'content') - # end - # end - # end - def to_xml(options = {}, &block) - XmlSerializer.new(self, options).serialize(&block) - end - end - - class XmlSerializer < ActiveModel::Serializers::Xml::Serializer #:nodoc: - class Attribute < ActiveModel::Serializers::Xml::Serializer::Attribute #:nodoc: - def compute_type - klass = @serializable.class - cast_type = klass.type_for_attribute(name) - - type = ActiveSupport::XmlMini::TYPE_NAMES[value.class.name] || cast_type.type - - { :text => :string, - :time => :datetime }[type] || type - end - protected :compute_type - end - end -end diff --git a/activerecord/lib/active_record/suppressor.rb b/activerecord/lib/active_record/suppressor.rb index b0b86865fd..b3644bf569 100644 --- a/activerecord/lib/active_record/suppressor.rb +++ b/activerecord/lib/active_record/suppressor.rb @@ -37,8 +37,7 @@ module ActiveRecord end end - # Ignore saving events if we're in suppression mode. - def save!(*args) # :nodoc: + def create_or_update(*args) # :nodoc: SuppressorRegistry.suppressed[self.class.name] ? true : super end end diff --git a/activerecord/lib/active_record/table_metadata.rb b/activerecord/lib/active_record/table_metadata.rb index 3dd6321a97..41f1c55c3c 100644 --- a/activerecord/lib/active_record/table_metadata.rb +++ b/activerecord/lib/active_record/table_metadata.rb @@ -41,7 +41,7 @@ module ActiveRecord association = klass._reflect_on_association(table_name) if association && !association.polymorphic? association_klass = association.klass - arel_table = association_klass.arel_table + arel_table = association_klass.arel_table.alias(table_name) else type_caster = TypeCaster::Connection.new(klass, table_name) association_klass = nil diff --git a/activerecord/lib/active_record/tasks/mysql_database_tasks.rb b/activerecord/lib/active_record/tasks/mysql_database_tasks.rb index eafbb2c249..673386f0d9 100644 --- a/activerecord/lib/active_record/tasks/mysql_database_tasks.rb +++ b/activerecord/lib/active_record/tasks/mysql_database_tasks.rb @@ -59,6 +59,7 @@ module ActiveRecord args = prepare_command_options('mysqldump') args.concat(["--result-file", "#{filename}"]) args.concat(["--no-data"]) + args.concat(["--routines"]) args.concat(["#{configuration['database']}"]) unless Kernel.system(*args) $stderr.puts "Could not dump the database structure. "\ @@ -130,15 +131,21 @@ IDENTIFIED BY '#{configuration['password']}' WITH GRANT OPTION; end def prepare_command_options(command) - args = [command] - args.concat(['--user', configuration['username']]) if configuration['username'] - args << "--password=#{configuration['password']}" if configuration['password'] - args.concat(['--default-character-set', configuration['encoding']]) if configuration['encoding'] - configuration.slice('host', 'port', 'socket').each do |k, v| - args.concat([ "--#{k}", v.to_s ]) if v - end - - args + args = { + 'host' => '--host', + 'port' => '--port', + 'socket' => '--socket', + 'username' => '--user', + 'password' => '--password', + 'encoding' => '--default-character-set', + 'sslca' => '--ssl-ca', + 'sslcert' => '--ssl-cert', + 'sslcapath' => '--ssl-capath', + 'sslcipher' => '--ssh-cipher', + 'sslkey' => '--ssl-key' + }.map { |opt, arg| "#{arg}=#{configuration[opt]}" if configuration[opt] }.compact + + [command, *args] end end end diff --git a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb index d7da95c8a9..55f839444b 100644 --- a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb +++ b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb @@ -1,5 +1,3 @@ -require 'shellwords' - module ActiveRecord module Tasks # :nodoc: class PostgreSQLDatabaseTasks # :nodoc: @@ -55,19 +53,22 @@ module ActiveRecord when String ActiveRecord::Base.dump_schemas end + + args = ['-i', '-s', '-x', '-O', '-f', filename] unless search_path.blank? - search_path = search_path.split(",").map{|search_path_part| "--schema=#{Shellwords.escape(search_path_part.strip)}" }.join(" ") + args << search_path.split(',').map do |part| + "--schema=#{part.strip}" + end.join(' ') end - - command = "pg_dump -i -s -x -O -f #{Shellwords.escape(filename)} #{search_path} #{Shellwords.escape(configuration['database'])}" - raise 'Error dumping database' unless Kernel.system(command) - + args << configuration['database'] + run_cmd('pg_dump', args, 'dumping') File.open(filename, "a") { |f| f << "SET search_path TO #{connection.schema_search_path};\n\n" } end def structure_load(filename) set_psql_env - Kernel.system("psql -X -q -f #{Shellwords.escape(filename)} #{configuration['database']}") + args = [ '-q', '-f', filename, configuration['database'] ] + run_cmd('psql', args, 'loading' ) end private @@ -93,6 +94,17 @@ module ActiveRecord ENV['PGPASSWORD'] = configuration['password'].to_s if configuration['password'] ENV['PGUSER'] = configuration['username'].to_s if configuration['username'] end + + def run_cmd(cmd, args, action) + fail run_cmd_error(cmd, args, action) unless Kernel.system(cmd, *args) + end + + def run_cmd_error(cmd, args, action) + msg = "failed to execute:\n" + msg << "#{cmd} #{args.join(' ')}\n\n" + msg << "Please check the output above for any errors and make sure that `#{cmd}` is installed in your PATH and has proper permissions.\n\n" + msg + end end end end diff --git a/activerecord/lib/active_record/transactions.rb b/activerecord/lib/active_record/transactions.rb index 311dacb449..887d7a5903 100644 --- a/activerecord/lib/active_record/transactions.rb +++ b/activerecord/lib/active_record/transactions.rb @@ -196,17 +196,16 @@ module ActiveRecord # automatically released. The following example demonstrates the problem: # # Model.connection.transaction do # BEGIN - # Model.connection.transaction(requires_new: true) do # CREATE SAVEPOINT active_record_1 + # Model.connection.transaction(requires_new: true) do # CREATE SAVEPOINT active_record_1 # Model.connection.create_table(...) # active_record_1 now automatically released - # end # RELEASE savepoint active_record_1 + # end # RELEASE SAVEPOINT active_record_1 # # ^^^^ BOOM! database error! # end # # Note that "TRUNCATE" is also a MySQL DDL statement! module ClassMethods - # See ActiveRecord::Transactions::ClassMethods for detailed documentation. + # See the ConnectionAdapters::DatabaseStatements#transaction API docs. def transaction(options = {}, &block) - # See the ConnectionAdapters::DatabaseStatements#transaction API docs. connection.transaction(options, &block) end @@ -319,8 +318,8 @@ module ActiveRecord end def before_committed! # :nodoc: - run_callbacks :before_commit_without_transaction_enrollment - run_callbacks :before_commit + _run_before_commit_without_transaction_enrollment_callbacks + _run_before_commit_callbacks end # Call the +after_commit+ callbacks. @@ -329,8 +328,8 @@ module ActiveRecord # but call it after the commit of a destroyed object. def committed!(should_run_callbacks: true) #:nodoc: if should_run_callbacks && destroyed? || persisted? - run_callbacks :commit_without_transaction_enrollment - run_callbacks :commit + _run_commit_without_transaction_enrollment_callbacks + _run_commit_callbacks end ensure force_clear_transaction_record_state @@ -340,8 +339,8 @@ module ActiveRecord # state should be rolled back to the beginning or just to the last savepoint. def rolledback!(force_restore_state: false, should_run_callbacks: true) #:nodoc: if should_run_callbacks - run_callbacks :rollback - run_callbacks :rollback_without_transaction_enrollment + _run_rollback_callbacks + _run_rollback_without_transaction_enrollment_callbacks end ensure restore_transaction_record_state(force_restore_state) @@ -380,6 +379,10 @@ module ActiveRecord raise ActiveRecord::Rollback unless status end status + ensure + if @transaction_state && @transaction_state.committed? + clear_transaction_record_state + end end protected diff --git a/activerecord/lib/active_record/type/decimal.rb b/activerecord/lib/active_record/type/decimal.rb index 867b5f75c7..f200a92d10 100644 --- a/activerecord/lib/active_record/type/decimal.rb +++ b/activerecord/lib/active_record/type/decimal.rb @@ -8,7 +8,7 @@ module ActiveRecord end def type_cast_for_schema(value) - value.to_s + value.to_s.inspect end private diff --git a/activerecord/lib/active_record/type/integer.rb b/activerecord/lib/active_record/type/integer.rb index 2a1b04ac7f..c5040c6d3b 100644 --- a/activerecord/lib/active_record/type/integer.rb +++ b/activerecord/lib/active_record/type/integer.rb @@ -46,18 +46,21 @@ module ActiveRecord def ensure_in_range(value) unless range.cover?(value) - raise RangeError, "#{value} is out of range for #{self.class} with limit #{limit || DEFAULT_LIMIT}" + raise RangeError, "#{value} is out of range for #{self.class} with limit #{_limit}" end end def max_value - limit = self.limit || DEFAULT_LIMIT - 1 << (limit * 8 - 1) # 8 bits per byte with one bit for sign + 1 << (_limit * 8 - 1) # 8 bits per byte with one bit for sign end def min_value -max_value end + + def _limit + self.limit || DEFAULT_LIMIT + end end end end diff --git a/activerecord/lib/active_record/validations.rb b/activerecord/lib/active_record/validations.rb index e227212827..34d96b19fe 100644 --- a/activerecord/lib/active_record/validations.rb +++ b/activerecord/lib/active_record/validations.rb @@ -76,4 +76,5 @@ end require "active_record/validations/associated" require "active_record/validations/uniqueness" require "active_record/validations/presence" +require "active_record/validations/absence" require "active_record/validations/length" diff --git a/activerecord/lib/active_record/validations/absence.rb b/activerecord/lib/active_record/validations/absence.rb new file mode 100644 index 0000000000..2e19e6dc5c --- /dev/null +++ b/activerecord/lib/active_record/validations/absence.rb @@ -0,0 +1,24 @@ +module ActiveRecord + module Validations + class AbsenceValidator < ActiveModel::Validations::AbsenceValidator # :nodoc: + def validate_each(record, attribute, association_or_value) + return unless should_validate?(record) + if record.class._reflect_on_association(attribute) + association_or_value = Array.wrap(association_or_value).reject(&:marked_for_destruction?) + end + super + end + end + + module ClassMethods + # Validates that the specified attributes are not present (as defined by + # Object#present?). If the attribute is an association, the associated object + # is considered absent if it was marked for destruction. + # + # See ActiveModel::Validations::HelperMethods.validates_absence_of for more information. + def validates_absence_of(*attr_names) + validates_with AbsenceValidator, _merge_attributes(attr_names) + end + end + end +end diff --git a/activerecord/lib/active_record/validations/length.rb b/activerecord/lib/active_record/validations/length.rb index 5991fbad8e..69e048eef1 100644 --- a/activerecord/lib/active_record/validations/length.rb +++ b/activerecord/lib/active_record/validations/length.rb @@ -22,7 +22,10 @@ module ActiveRecord end module ClassMethods - # See <tt>ActiveModel::Validation::LengthValidator</tt> for more information. + # Validates that the specified attributes match the length restrictions supplied. + # If the attribute is an association, records that are marked for destruction are not counted. + # + # See ActiveModel::Validations::HelperMethods.validates_length_of for more information. def validates_length_of(*attr_names) validates_with LengthValidator, _merge_attributes(attr_names) end diff --git a/activerecord/lib/active_record/validations/presence.rb b/activerecord/lib/active_record/validations/presence.rb index a9b791397b..23a3985d35 100644 --- a/activerecord/lib/active_record/validations/presence.rb +++ b/activerecord/lib/active_record/validations/presence.rb @@ -1,18 +1,12 @@ module ActiveRecord module Validations class PresenceValidator < ActiveModel::Validations::PresenceValidator # :nodoc: - def validate(record) + def validate_each(record, attribute, association_or_value) return unless should_validate?(record) - super - attributes.each do |attribute| - next unless record.class._reflect_on_association(attribute) - associated_records = Array.wrap(record.send(attribute)) - - # Superclass validates presence. Ensure present records aren't about to be destroyed. - if associated_records.present? && associated_records.all?(&:marked_for_destruction?) - record.errors.add(attribute, :blank, options) - end + if record.class._reflect_on_association(attribute) + association_or_value = Array.wrap(association_or_value).reject(&:marked_for_destruction?) end + super end end diff --git a/activerecord/lib/active_record/validations/uniqueness.rb b/activerecord/lib/active_record/validations/uniqueness.rb index 5106f4e127..32d17a1392 100644 --- a/activerecord/lib/active_record/validations/uniqueness.rb +++ b/activerecord/lib/active_record/validations/uniqueness.rb @@ -17,7 +17,9 @@ module ActiveRecord value = map_enum_attribute(finder_class, attribute, value) relation = build_relation(finder_class, table, attribute, value) - relation = relation.where.not(finder_class.primary_key => record.id) if record.persisted? + if record.persisted? && finder_class.primary_key.to_s != attribute.to_s + relation = relation.where.not(finder_class.primary_key => record.id) + end relation = scope_relation(record, table, relation) relation = relation.merge(options[:conditions]) if options[:conditions] diff --git a/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb b/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb index 7a3c6f5e95..0d57de4d65 100644 --- a/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb +++ b/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb @@ -14,10 +14,9 @@ module ActiveRecord protected attr_reader :migration_action, :join_tables - # sets the default migration template that is being used for the generation of the migration - # depending on the arguments which would be sent out in the command line, the migration template - # and the table name instance variables are setup. - + # Sets the default migration template that is being used for the generation of the migration. + # Depending on command line arguments, the migration template and the table name instance + # variables are set up. def set_local_assigns! @migration_template = "migration.rb" case file_name @@ -56,6 +55,8 @@ module ActiveRecord attributes.select { |a| !a.reference? && a.has_index? } end + # A migration file name can only contain underscores (_), lowercase characters, + # and numbers 0-9. Any other file name will raise an IllegalMigrationNameError. def validate_file_name! unless file_name =~ /^[_a-z0-9]+$/ raise IllegalMigrationNameError.new(file_name) |