diff options
Diffstat (limited to 'activerecord/lib/active_record')
39 files changed, 416 insertions, 331 deletions
diff --git a/activerecord/lib/active_record/aggregations.rb b/activerecord/lib/active_record/aggregations.rb index 9d1c12ec62..d075edc159 100644 --- a/activerecord/lib/active_record/aggregations.rb +++ b/activerecord/lib/active_record/aggregations.rb @@ -223,7 +223,8 @@ module ActiveRecord reader_method(name, class_name, mapping, allow_nil, constructor) writer_method(name, class_name, mapping, allow_nil, converter) - create_reflection(:composed_of, part_id, nil, options, self) + reflection = ActiveRecord::Reflection.create(:composed_of, part_id, nil, options, self) + Reflection.add_reflection self, part_id, reflection end private diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index 6fd4f3042c..5ceda933f2 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -1205,7 +1205,8 @@ module ActiveRecord # has_many :reports, -> { readonly } # has_many :subscribers, through: :subscriptions, source: :user def has_many(name, scope = nil, options = {}, &extension) - Builder::HasMany.build(self, name, scope, options, &extension) + reflection = Builder::HasMany.build(self, name, scope, options, &extension) + Reflection.add_reflection self, name, reflection end # Specifies a one-to-one association with another class. This method should only be used @@ -1308,7 +1309,8 @@ module ActiveRecord # has_one :club, through: :membership # has_one :primary_address, -> { where primary: true }, through: :addressables, source: :addressable def has_one(name, scope = nil, options = {}) - Builder::HasOne.build(self, name, scope, options) + reflection = Builder::HasOne.build(self, name, scope, options) + Reflection.add_reflection self, name, reflection end # Specifies a one-to-one association with another class. This method should only be used @@ -1420,7 +1422,8 @@ module ActiveRecord # belongs_to :company, touch: true # belongs_to :company, touch: :employees_last_updated_at def belongs_to(name, scope = nil, options = {}) - Builder::BelongsTo.build(self, name, scope, options) + reflection = Builder::BelongsTo.build(self, name, scope, options) + Reflection.add_reflection self, name, reflection end # Specifies a many-to-many relationship with another class. This associates two classes via an @@ -1557,7 +1560,8 @@ module ActiveRecord # has_and_belongs_to_many :categories, join_table: "prods_cats" # has_and_belongs_to_many :categories, -> { readonly } def has_and_belongs_to_many(name, scope = nil, options = {}, &extension) - Builder::HasAndBelongsToMany.build(self, name, scope, options, &extension) + reflection = Builder::HasAndBelongsToMany.build(self, name, scope, options, &extension) + Reflection.add_reflection self, name, reflection end end end diff --git a/activerecord/lib/active_record/associations/association.rb b/activerecord/lib/active_record/associations/association.rb index 338d5d2afe..67d24b35d1 100644 --- a/activerecord/lib/active_record/associations/association.rb +++ b/activerecord/lib/active_record/associations/association.rb @@ -117,7 +117,7 @@ module ActiveRecord # Can be overridden (i.e. in ThroughAssociation) to merge in other scopes (i.e. the # through association's scope) def target_scope - AssociationRelation.new(klass, klass.arel_table, self).merge!(klass.all) + AssociationRelation.create(klass, klass.arel_table, self).merge!(klass.all) end # Loads the \target if needed and returns it. diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb index f1bec5787a..8027acfb83 100644 --- a/activerecord/lib/active_record/associations/association_scope.rb +++ b/activerecord/lib/active_record/associations/association_scope.rb @@ -82,17 +82,19 @@ module ActiveRecord constraint = table[key].eq(foreign_table[foreign_key]) if reflection.type - type = chain[i + 1].klass.base_class.name - constraint = constraint.and(table[reflection.type].eq(type)) + value = chain[i + 1].klass.base_class.name + bind_val = bind scope, table.table_name, reflection.type.to_s, value + scope = scope.where(table[reflection.type].eq(bind_val)) end scope = scope.joins(join(foreign_table, constraint)) end + klass = i == 0 ? self.klass : reflection.klass + # Exclude the scope of the association itself, because that # was already merged in the #scope method. scope_chain[i].each do |scope_chain_item| - klass = i == 0 ? self.klass : reflection.klass item = eval_scope(klass, scope_chain_item) if scope_chain_item == self.reflection.scope @@ -119,7 +121,7 @@ module ActiveRecord # the owner klass.table_name else - reflection.table_name + super end end diff --git a/activerecord/lib/active_record/associations/builder/association.rb b/activerecord/lib/active_record/associations/builder/association.rb index bbc1c20f60..34de1a1f32 100644 --- a/activerecord/lib/active_record/associations/builder/association.rb +++ b/activerecord/lib/active_record/associations/builder/association.rb @@ -2,7 +2,7 @@ # used by all associations. # # The hierarchy is defined as follows: -# Association +# Association # - SingularAssociation # - BelongsToAssociation # - HasOneAssociation @@ -13,50 +13,44 @@ module ActiveRecord::Associations::Builder class Association #:nodoc: class << self - attr_accessor :valid_options + attr_accessor :extensions end + self.extensions = [] - self.valid_options = [:class_name, :foreign_key, :validate] + VALID_OPTIONS = [:class_name, :foreign_key, :validate] - attr_reader :model, :name, :scope, :options, :reflection + attr_reader :name, :scope, :options - def self.build(*args, &block) - new(*args, &block).build - end - - def initialize(model, name, scope, options) + def self.build(model, name, scope, options, &block) raise ArgumentError, "association names must be a Symbol" unless name.kind_of?(Symbol) - @model = model - @name = name - if scope.is_a?(Hash) - @scope = nil - @options = scope - else - @scope = scope - @options = options + options = scope + scope = nil end - if @scope && @scope.arity == 0 - prev_scope = @scope - @scope = proc { instance_exec(&prev_scope) } - end - end - - def mixin - @model.generated_feature_methods + builder = new(name, scope, options, &block) + reflection = builder.build(model) + builder.define_accessors model + builder.define_callbacks model, reflection + builder.define_extensions model + reflection end - include Module.new { def build; end } + def initialize(name, scope, options) + @name = name + @scope = scope + @options = options - def build validate_options - define_accessors - configure_dependency if options[:dependent] - @reflection = model.create_reflection(macro, name, scope, options, model) - super # provides an extension point - @reflection + + if scope && scope.arity == 0 + @scope = proc { instance_exec(&scope) } + end + end + + def build(model) + ActiveRecord::Reflection.create(macro, name, scope, options, model) end def macro @@ -64,26 +58,37 @@ module ActiveRecord::Associations::Builder end def valid_options - Association.valid_options + VALID_OPTIONS + Association.extensions.flat_map(&:valid_options) end def validate_options options.assert_valid_keys(valid_options) end - + + def define_extensions(model) + end + + def define_callbacks(model, reflection) + add_before_destroy_callbacks(model, name) if options[:dependent] + Association.extensions.each do |extension| + extension.build model, reflection + end + end + # Defines the setter and getter methods for the association # class Post < ActiveRecord::Base # has_many :comments # end - # + # # Post.first.comments and Post.first.comments= methods are defined by this method... - def define_accessors - define_readers - define_writers + def define_accessors(model) + mixin = model.generated_feature_methods + define_readers(mixin) + define_writers(mixin) end - def define_readers + def define_readers(mixin) mixin.class_eval <<-CODE, __FILE__, __LINE__ + 1 def #{name}(*args) association(:#{name}).reader(*args) @@ -91,7 +96,7 @@ module ActiveRecord::Associations::Builder CODE end - def define_writers + def define_writers(mixin) mixin.class_eval <<-CODE, __FILE__, __LINE__ + 1 def #{name}=(value) association(:#{name}).writer(value) @@ -99,17 +104,18 @@ module ActiveRecord::Associations::Builder CODE end - def configure_dependency + def valid_dependent_options + raise NotImplementedError + end + + private + + def add_before_destroy_callbacks(model, name) unless valid_dependent_options.include? options[:dependent] raise ArgumentError, "The :dependent option must be one of #{valid_dependent_options}, but is :#{options[:dependent]}" end - n = name - model.before_destroy lambda { |o| o.association(n).handle_dependency } - end - - def valid_dependent_options - raise NotImplementedError + model.before_destroy lambda { |o| o.association(name).handle_dependency } end end end diff --git a/activerecord/lib/active_record/associations/builder/belongs_to.rb b/activerecord/lib/active_record/associations/builder/belongs_to.rb index 81293e464d..4e88b50ec5 100644 --- a/activerecord/lib/active_record/associations/builder/belongs_to.rb +++ b/activerecord/lib/active_record/associations/builder/belongs_to.rb @@ -12,17 +12,21 @@ module ActiveRecord::Associations::Builder !options[:polymorphic] end - def build - reflection = super - add_counter_cache_callbacks(reflection) if options[:counter_cache] - add_touch_callbacks(reflection) if options[:touch] - reflection - end - def valid_dependent_options [:destroy, :delete] end + def define_callbacks(model, reflection) + super + add_counter_cache_callbacks(model, reflection) if options[:counter_cache] + add_touch_callbacks(model, reflection) if options[:touch] + end + + def define_accessors(mixin) + super + add_counter_cache_methods mixin + end + private def add_counter_cache_methods(mixin) @@ -70,9 +74,8 @@ module ActiveRecord::Associations::Builder end end - def add_counter_cache_callbacks(reflection) + def add_counter_cache_callbacks(model, reflection) cache_column = reflection.counter_cache_column - add_counter_cache_methods mixin association = self model.after_create lambda { |record| @@ -117,7 +120,7 @@ module ActiveRecord::Associations::Builder end end - def add_touch_callbacks(reflection) + def add_touch_callbacks(model, reflection) foreign_key = reflection.foreign_key n = name touch = options[:touch] diff --git a/activerecord/lib/active_record/associations/builder/collection_association.rb b/activerecord/lib/active_record/associations/builder/collection_association.rb index 5eb11f98c8..7bd0687c0b 100644 --- a/activerecord/lib/active_record/associations/builder/collection_association.rb +++ b/activerecord/lib/active_record/associations/builder/collection_association.rb @@ -12,56 +12,50 @@ module ActiveRecord::Associations::Builder :after_add, :before_remove, :after_remove, :extend] end - attr_reader :block_extension, :extension_module + attr_reader :block_extension - def initialize(*args, &extension) - super(*args) - @block_extension = extension - end - - def build - wrap_block_extension - reflection = super - CALLBACKS.each { |callback_name| define_callback(callback_name) } - reflection + def initialize(name, scope, options) + super + @mod = nil + if block_given? + @mod = Module.new(&Proc.new) + @scope = wrap_scope @scope, @mod + end end - def writable? - true + def define_callbacks(model, reflection) + super + CALLBACKS.each { |callback_name| define_callback(model, callback_name) } end - def wrap_block_extension - if block_extension - @extension_module = mod = Module.new(&block_extension) - silence_warnings do - model.parent.const_set(extension_module_name, mod) - end - - prev_scope = @scope - - if prev_scope - @scope = proc { |owner| instance_exec(owner, &prev_scope).extending(mod) } - else - @scope = proc { extending(mod) } - end + def define_extensions(model) + if @mod + extension_module_name = "#{model.name.demodulize}#{name.to_s.camelize}AssociationExtension" + model.parent.const_set(extension_module_name, @mod) end end - def extension_module_name - @extension_module_name ||= "#{model.name.demodulize}#{name.to_s.camelize}AssociationExtension" - end - - def define_callback(callback_name) + def define_callback(model, callback_name) full_callback_name = "#{callback_name}_for_#{name}" # TODO : why do i need method_defined? I think its because of the inheritance chain - model.class_attribute full_callback_name.to_sym unless model.method_defined?(full_callback_name) - model.send("#{full_callback_name}=", Array(options[callback_name.to_sym])) + model.class_attribute full_callback_name unless model.method_defined?(full_callback_name) + callbacks = Array(options[callback_name.to_sym]).map do |callback| + case callback + when Symbol + ->(method, owner, record) { owner.send(callback, record) } + when Proc + ->(method, owner, record) { callback.call(owner, record) } + else + ->(method, owner, record) { callback.send(method, owner, record) } + end + end + model.send "#{full_callback_name}=", callbacks end # Defines the setter and getter methods for the collection_singular_ids. - def define_readers + def define_readers(mixin) super mixin.class_eval <<-CODE, __FILE__, __LINE__ + 1 @@ -71,7 +65,7 @@ module ActiveRecord::Associations::Builder CODE end - def define_writers + def define_writers(mixin) super mixin.class_eval <<-CODE, __FILE__, __LINE__ + 1 @@ -80,5 +74,15 @@ module ActiveRecord::Associations::Builder end CODE end + + private + + def wrap_scope(scope, mod) + if scope + proc { |owner| instance_exec(owner, &scope).extending(mod) } + else + proc { extending(mod) } + end + 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 64ee24c7c6..55ec3bf4f1 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 @@ -8,13 +8,8 @@ module ActiveRecord::Associations::Builder super + [:join_table, :association_foreign_key] end - def build - reflection = super - define_destroy_hook - reflection - end - - def define_destroy_hook + def define_callbacks(model, reflection) + super name = self.name model.send(:include, Module.new { class_eval <<-RUBY, __FILE__, __LINE__ + 1 diff --git a/activerecord/lib/active_record/associations/builder/has_one.rb b/activerecord/lib/active_record/associations/builder/has_one.rb index 2406437a07..62d454ce55 100644 --- a/activerecord/lib/active_record/associations/builder/has_one.rb +++ b/activerecord/lib/active_record/associations/builder/has_one.rb @@ -14,12 +14,14 @@ module ActiveRecord::Associations::Builder !options[:through] end - def configure_dependency - super unless options[:through] - end - def valid_dependent_options [:destroy, :delete, :nullify, :restrict_with_error, :restrict_with_exception] end + + private + + def add_before_destroy_callbacks(model, name) + super unless options[:through] + end end end diff --git a/activerecord/lib/active_record/associations/builder/singular_association.rb b/activerecord/lib/active_record/associations/builder/singular_association.rb index 76e48e66e5..d97c0e9afd 100644 --- a/activerecord/lib/active_record/associations/builder/singular_association.rb +++ b/activerecord/lib/active_record/associations/builder/singular_association.rb @@ -10,14 +10,14 @@ module ActiveRecord::Associations::Builder true end - def define_accessors + def define_accessors(model) super - define_constructors if constructable? + define_constructors(model.generated_feature_methods) if constructable? end # Defines the (build|create)_association methods for belongs_to or has_one association - - def define_constructors + + def define_constructors(mixin) mixin.class_eval <<-CODE, __FILE__, __LINE__ + 1 def build_#{name}(*args, &block) association(:#{name}).build(*args, &block) diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb index 6ddbd4955d..8ce02afef8 100644 --- a/activerecord/lib/active_record/associations/collection_association.rb +++ b/activerecord/lib/active_record/associations/collection_association.rb @@ -34,7 +34,7 @@ module ActiveRecord reload end - @proxy ||= CollectionProxy.new(klass, self) + @proxy ||= CollectionProxy.create(klass, self) end # Implements the writer method, e.g. foo.items= for Foo.has_many :items @@ -510,20 +510,13 @@ module ActiveRecord def callback(method, record) callbacks_for(method).each do |callback| - case callback - when Symbol - owner.send(callback, record) - when Proc - callback.call(owner, record) - else - callback.send(method, owner, record) - end + callback.call(method, owner, record) end end def callbacks_for(callback_name) full_callback_name = "#{callback_name}_for_#{reflection.name}" - owner.class.send(full_callback_name.to_sym) || [] + owner.class.send(full_callback_name) end # Should we deal with assoc.first or assoc.last by issuing an independent query to diff --git a/activerecord/lib/active_record/associations/join_dependency/join_association.rb b/activerecord/lib/active_record/associations/join_dependency/join_association.rb index e0715d9dd1..58fc00d811 100644 --- a/activerecord/lib/active_record/associations/join_dependency/join_association.rb +++ b/activerecord/lib/active_record/associations/join_dependency/join_association.rb @@ -25,11 +25,8 @@ module ActiveRecord attr_reader :tables delegate :options, :through_reflection, :source_reflection, :chain, :to => :reflection - delegate :table, :table_name, :to => :parent, :prefix => :parent delegate :alias_tracker, :to => :join_dependency - alias :alias_suffix :parent_table_name - def initialize(reflection, join_dependency, parent = nil) reflection.check_validity! @@ -47,6 +44,9 @@ module ActiveRecord @tables = construct_tables.reverse end + def parent_table_name; parent.table_name; end + alias :alias_suffix :parent_table_name + def ==(other) other.class == self.class && other.reflection == reflection && @@ -64,15 +64,20 @@ module ActiveRecord end end - def join_to(manager) + def join_constraints + joins = [] tables = @tables.dup - foreign_table = parent_table + + foreign_table = parent.table foreign_klass = parent.base_klass + scope_chain_iter = reflection.scope_chain.reverse_each + # The chain starts with the target table, but we want to end with it here (makes # more sense in this context), so we reverse - chain.reverse.each_with_index do |reflection, i| + chain.reverse_each do |reflection| table = tables.shift + klass = reflection.klass case reflection.source_macro when :belongs_to @@ -80,11 +85,10 @@ module ActiveRecord foreign_key = reflection.foreign_key when :has_and_belongs_to_many # Join the join table first... - manager.from(join( + joins << join( table, table[reflection.foreign_key]. - eq(foreign_table[reflection.active_record_primary_key]) - )) + eq(foreign_table[reflection.active_record_primary_key])) foreign_table, table = table, tables.shift @@ -95,38 +99,39 @@ module ActiveRecord foreign_key = reflection.active_record_primary_key end - constraint = build_constraint(reflection, table, key, foreign_table, foreign_key) + constraint = build_constraint(klass, table, key, foreign_table, foreign_key) - scope_chain_items = scope_chain[i] + scope_chain_items = scope_chain_iter.next.map do |item| + if item.is_a?(Relation) + item + else + ActiveRecord::Relation.create(klass, table).instance_exec(self, &item) + end + end if reflection.type - scope_chain_items += [ - ActiveRecord::Relation.new(reflection.klass, table) + scope_chain_items << + ActiveRecord::Relation.create(klass, table) .where(reflection.type => foreign_klass.base_class.name) - ] end - scope_chain_items += [reflection.klass.send(:build_default_scope)].compact + scope_chain_items.concat [klass.send(:build_default_scope)].compact - constraint = scope_chain_items.inject(constraint) do |chain, item| - unless item.is_a?(Relation) - item = ActiveRecord::Relation.new(reflection.klass, table).instance_exec(self, &item) - end + rel = scope_chain_items.inject(scope_chain_items.shift) do |left, right| + left.merge right + end - if item.arel.constraints.empty? - chain - else - chain.and(item.arel.constraints) - end + if rel && !rel.arel.constraints.empty? + constraint = constraint.and rel.arel.constraints end - manager.from(join(table, constraint)) + joins << join(table, constraint) # The current table in this iteration becomes the foreign table in the next - foreign_table, foreign_klass = table, reflection.klass + foreign_table, foreign_klass = table, klass end - manager + joins end # Builds equality condition. @@ -144,13 +149,13 @@ module ActiveRecord # foreign_table #=> #<Arel::Table @name="physicians" ...> # foreign_key #=> id # - def build_constraint(reflection, table, key, foreign_table, foreign_key) + def build_constraint(klass, table, key, foreign_table, foreign_key) constraint = table[key].eq(foreign_table[foreign_key]) - if reflection.klass.finder_needs_type_condition? + if klass.finder_needs_type_condition? constraint = table.create_and([ constraint, - reflection.klass.send(:type_condition, table) + klass.send(:type_condition, table) ]) end @@ -169,11 +174,6 @@ module ActiveRecord def aliased_table_name table.table_alias || table.name end - - def scope_chain - @scope_chain ||= reflection.scope_chain.reverse - end - end end end diff --git a/activerecord/lib/active_record/associations/join_helper.rb b/activerecord/lib/active_record/associations/join_helper.rb index 5a41b40c8f..27b70edf1a 100644 --- a/activerecord/lib/active_record/associations/join_helper.rb +++ b/activerecord/lib/active_record/associations/join_helper.rb @@ -19,7 +19,7 @@ module ActiveRecord if reflection.source_macro == :has_and_belongs_to_many tables << alias_tracker.aliased_table_for( - (reflection.source_reflection || reflection).join_table, + reflection.source_reflection.join_table, table_alias_for(reflection, true) ) end diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index 82bf426b22..2317e34bc0 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -85,7 +85,7 @@ module ActiveRecord def initialize(records, associations, preload_scope = nil) @records = Array.wrap(records).compact.uniq @associations = Array.wrap(associations) - @preload_scope = preload_scope || Relation.new(nil, nil) + @preload_scope = preload_scope || Relation.create(nil, nil) end def run diff --git a/activerecord/lib/active_record/associations/through_association.rb b/activerecord/lib/active_record/associations/through_association.rb index bd99997e7f..ba7d2a3782 100644 --- a/activerecord/lib/active_record/associations/through_association.rb +++ b/activerecord/lib/active_record/associations/through_association.rb @@ -13,7 +13,7 @@ module ActiveRecord # 2. To get the type conditions for any STI models in the chain def target_scope scope = super - chain[1..-1].each do |reflection| + chain.drop(1).each do |reflection| scope.merge!( reflection.klass.all. except(:select, :create_with, :includes, :preload, :joins, :eager_load) diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb index c991c870ed..b30d1eb0a6 100644 --- a/activerecord/lib/active_record/autosave_association.rb +++ b/activerecord/lib/active_record/autosave_association.rb @@ -127,17 +127,17 @@ module ActiveRecord extend ActiveSupport::Concern module AssociationBuilderExtension #:nodoc: - def build + def self.build(model, reflection) model.send(:add_autosave_association_callbacks, reflection) - super + end + + def self.valid_options + [ :autosave ] end end included do - Associations::Builder::Association.class_eval do - self.valid_options << :autosave - include AssociationBuilderExtension - end + Associations::Builder::Association.extensions << AssociationBuilderExtension end module ClassMethods 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 811749c7fd..cfdcae7f63 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -624,7 +624,7 @@ module ActiveRecord end response - rescue + rescue Exception ActiveRecord::Base.clear_active_connections! unless testing raise end 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 c64b542286..97e1bc5379 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb @@ -18,8 +18,7 @@ module ActiveRecord end end - # Returns an array of record hashes with the column names as keys and - # column values as values. + # Returns an ActiveRecord::Result instance. def select_all(arel, name = nil, binds = []) select(to_sql(arel, binds), name, binds) end @@ -27,8 +26,7 @@ module ActiveRecord # Returns a record hash with the column names as keys and column values # as values. def select_one(arel, name = nil, binds = []) - result = select_all(arel, name, binds) - result.first if result + select_all(arel, name, binds).first end # Returns a single value from a record @@ -355,8 +353,7 @@ module ActiveRecord subselect end - # Returns an array of record hashes with the column names as keys and - # column values as values. + # Returns an ActiveRecord::Result instance. def select(sql, name = nil, binds = []) end undef_method :select @@ -377,14 +374,14 @@ module ActiveRecord update_sql(sql, name) end - def sql_for_insert(sql, pk, id_value, sequence_name, binds) - [sql, binds] - end - - def last_inserted_id(result) - row = result.rows.first - row && row.first - end + def sql_for_insert(sql, pk, id_value, sequence_name, binds) + [sql, binds] + end + + def last_inserted_id(result) + row = result.rows.first + row && row.first + end end end end diff --git a/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb b/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb index 41e07fbda9..e6b3c8ec9f 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb @@ -20,6 +20,12 @@ module ActiveRecord attr_reader :query_cache, :query_cache_enabled + def initialize(*) + super + @query_cache = Hash.new { |h,sql| h[sql] = {} } + @query_cache_enabled = false + end + # Enable the query cache within the block. def cache old, @query_cache_enabled = @query_cache_enabled, true diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index 30932699d8..ba1cb05d2c 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -95,8 +95,6 @@ module ActiveRecord @last_use = false @logger = logger @pool = pool - @query_cache = Hash.new { |h,sql| h[sql] = {} } - @query_cache_enabled = false @schema_cache = SchemaCache.new self @visitor = nil end diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb index edeb338310..28c7cff1cc 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', '~> 0.3.10' +gem 'mysql2', '~> 0.3.13' require 'mysql2' module ActiveRecord @@ -229,8 +229,7 @@ module ActiveRecord alias exec_without_stmt exec_query - # Returns an array of record hashes with the column names as keys and - # column values as values. + # Returns an ActiveRecord::Result instance. def select(sql, name = nil, binds = []) exec_query(sql, name) end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/array_parser.rb b/activerecord/lib/active_record/connection_adapters/postgresql/array_parser.rb index b7d24f2bb3..20de8d1982 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/array_parser.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/array_parser.rb @@ -2,6 +2,13 @@ module ActiveRecord module ConnectionAdapters class PostgreSQLColumn < Column module ArrayParser + + DOUBLE_QUOTE = '"' + BACKSLASH = "\\" + COMMA = ',' + BRACKET_OPEN = '{' + BRACKET_CLOSE = '}' + private # Loads pg_array_parser if available. String parsing can be # performed quicker by a native extension, which will not create @@ -12,18 +19,18 @@ module ActiveRecord include PgArrayParser rescue LoadError def parse_pg_array(string) - parse_data(string, 0) + parse_data(string) end end - def parse_data(string, index) - local_index = index + def parse_data(string) + local_index = 0 array = [] while(local_index < string.length) case string[local_index] - when '{' + when BRACKET_OPEN local_index,array = parse_array_contents(array, string, local_index + 1) - when '}' + when BRACKET_CLOSE return array end local_index += 1 @@ -33,9 +40,9 @@ module ActiveRecord end def parse_array_contents(array, string, index) - is_escaping = false - is_quoted = false - was_quoted = false + is_escaping = false + is_quoted = false + was_quoted = false current_item = '' local_index = index @@ -47,29 +54,29 @@ module ActiveRecord else if is_quoted case token - when '"' + when DOUBLE_QUOTE is_quoted = false was_quoted = true - when "\\" + when BACKSLASH is_escaping = true else current_item << token end else case token - when "\\" + when BACKSLASH is_escaping = true - when ',' + when COMMA add_item_to_array(array, current_item, was_quoted) current_item = '' was_quoted = false - when '"' + when DOUBLE_QUOTE is_quoted = true - when '{' + when BRACKET_OPEN internal_items = [] local_index,internal_items = parse_array_contents(internal_items, string, local_index + 1) array.push(internal_items) - when '}' + when BRACKET_CLOSE add_item_to_array(array, current_item, was_quoted) return local_index,array else 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 a651b6c32e..3fce8de1ba 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -384,8 +384,9 @@ module ActiveRecord def change_column(table_name, column_name, type, options = {}) clear_cache! quoted_table_name = quote_table_name(table_name) - - execute "ALTER TABLE #{quoted_table_name} ALTER COLUMN #{quote_column_name(column_name)} TYPE #{type_to_sql(type, options[:limit], options[:precision], options[:scale])}" + sql_type = type_to_sql(type, options[:limit], options[:precision], options[:scale]) + sql_type << "[]" if options[:array] + execute "ALTER TABLE #{quoted_table_name} ALTER COLUMN #{quote_column_name(column_name)} TYPE #{sql_type}" change_column_default(table_name, column_name, options[:default]) if options_include_default?(options) change_column_null(table_name, column_name, options[:null], options[:default]) if options.key?(:null) diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 98126249df..342d1b1433 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -373,15 +373,11 @@ module ActiveRecord self end - def xml(options = {}) - column(args[0], :text, options) - end - private - def create_column_definition(name, type) - ColumnDefinition.new name, type - end + def create_column_definition(name, type) + ColumnDefinition.new name, type + end end class Table < ActiveRecord::ConnectionAdapters::Table diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index c6b7da2e3c..2b1e997ef4 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -134,19 +134,18 @@ module ActiveRecord # Returns the Arel engine. def arel_engine - @arel_engine ||= begin + @arel_engine ||= if Base == self || connection_handler.retrieve_connection_pool(self) self else superclass.arel_engine end - end end private def relation #:nodoc: - relation = Relation.new(self, arel_table) + relation = Relation.create(self, arel_table) if finder_needs_type_condition? relation.where(type_condition).create_with(inheritance_column.to_sym => sti_name) @@ -347,7 +346,7 @@ module ActiveRecord # Returns a hash of the given methods with their names as keys and returned values as values. def slice(*methods) - Hash[methods.map { |method| [method, public_send(method)] }].with_indifferent_access + Hash[methods.map! { |method| [method, public_send(method)] }].with_indifferent_access end def set_transaction_state(state) # :nodoc: diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb index 47d4f3637f..20ca4e3c91 100644 --- a/activerecord/lib/active_record/fixtures.rb +++ b/activerecord/lib/active_record/fixtures.rb @@ -592,14 +592,7 @@ module ActiveRecord row[fk_name] = ActiveRecord::FixtureSet.identify(value) end when :has_and_belongs_to_many - if (targets = row.delete(association.name.to_s)) - targets = targets.is_a?(Array) ? targets : targets.split(/\s*,\s*/) - table_name = association.join_table - rows[table_name].concat targets.map { |target| - { association.foreign_key => row[primary_key_name], - association.association_foreign_key => ActiveRecord::FixtureSet.identify(target) } - } - end + handle_habtm(rows, row, association) end end end @@ -614,6 +607,17 @@ module ActiveRecord @primary_key_name ||= model_class && model_class.primary_key end + def handle_habtm(rows, row, association) + if (targets = row.delete(association.name.to_s)) + targets = targets.is_a?(Array) ? targets : targets.split(/\s*,\s*/) + table_name = association.join_table + rows[table_name].concat targets.map { |target| + { association.foreign_key => row[primary_key_name], + association.association_foreign_key => ActiveRecord::FixtureSet.identify(target) } + } + end + end + def has_primary_key_column? @has_primary_key_column ||= primary_key_name && model_class.columns.any? { |c| c.name == primary_key_name } diff --git a/activerecord/lib/active_record/locking/optimistic.rb b/activerecord/lib/active_record/locking/optimistic.rb index 2a7996c4e7..626fe40103 100644 --- a/activerecord/lib/active_record/locking/optimistic.rb +++ b/activerecord/lib/active_record/locking/optimistic.rb @@ -82,7 +82,7 @@ module ActiveRecord stmt = relation.where( relation.table[self.class.primary_key].eq(id).and( - relation.table[lock_col].eq(self.class.quote_value(previous_lock_value)) + relation.table[lock_col].eq(self.class.quote_value(previous_lock_value, column_for_attribute(lock_col))) ) ).arel.compile_update(arel_attributes_with_values_for_update(attribute_names)) diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index 33ee129fc6..19c6f8148b 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -32,7 +32,7 @@ module ActiveRecord class PendingMigrationError < ActiveRecordError#:nodoc: def initialize - super("Migrations are pending; run 'rake db:migrate RAILS_ENV=#{Rails.env}' to resolve this issue.") + super("Migrations are pending; run 'bin/rake db:migrate RAILS_ENV=#{::Rails.env}' to resolve this issue.") end end diff --git a/activerecord/lib/active_record/model_schema.rb b/activerecord/lib/active_record/model_schema.rb index ac2d2f2712..23541d1d27 100644 --- a/activerecord/lib/active_record/model_schema.rb +++ b/activerecord/lib/active_record/model_schema.rb @@ -124,7 +124,7 @@ module ActiveRecord @quoted_table_name = nil @arel_table = nil @sequence_name = nil unless defined?(@explicit_sequence_name) && @explicit_sequence_name - @relation = Relation.new(self, arel_table) + @relation = Relation.create(self, arel_table) end # Returns a quoted version of the table name, used to construct SQL statements. @@ -253,19 +253,6 @@ module ActiveRecord @content_columns ||= columns.reject { |c| c.primary || c.name =~ /(_id|_count)$/ || c.name == inheritance_column } end - # Returns a hash of all the methods added to query each of the columns in the table with the name of the method as the key - # and true as the value. This makes it possible to do O(1) lookups in respond_to? to check if a given method for attribute - # is available. - def column_methods_hash #:nodoc: - @dynamic_methods_hash ||= column_names.each_with_object(Hash.new(false)) do |attr, methods| - attr_name = attr.to_s - methods[attr.to_sym] = attr_name - methods["#{attr}=".to_sym] = attr_name - methods["#{attr}?".to_sym] = attr_name - methods["#{attr}_before_type_cast".to_sym] = attr_name - end - end - # Resets all the cached information about columns, which will cause them # to be reloaded on the next request. # diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 8a9488656b..73d154e03e 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -10,6 +10,27 @@ module ActiveRecord self.aggregate_reflections = {} end + def self.create(macro, name, scope, options, ar) + case macro + when :has_and_belongs_to_many + klass = AssociationReflection + when :has_many, :belongs_to, :has_one + klass = options[:through] ? ThroughReflection : AssociationReflection + when :composed_of + klass = AggregateReflection + end + + klass.new(macro, name, scope, options, ar) + end + + def self.add_reflection(ar, name, reflection) + if reflection.class == AggregateReflection + ar.aggregate_reflections = ar.aggregate_reflections.merge(name => reflection) + else + ar.reflections = ar.reflections.merge(name => reflection) + end + end + # \Reflection enables to interrogate Active Record classes and objects # about their associations and aggregations. This information can, # for example, be used in a form builder that takes an Active Record object @@ -19,25 +40,6 @@ module ActiveRecord # MacroReflection class has info for AggregateReflection and AssociationReflection # classes. module ClassMethods - def create_reflection(macro, name, scope, options, active_record) - case macro - when :has_many, :belongs_to, :has_one, :has_and_belongs_to_many - klass = options[:through] ? ThroughReflection : AssociationReflection - when :composed_of - klass = AggregateReflection - end - - reflection = klass.new(macro, name, scope, options, active_record) - - if klass == AggregateReflection - self.aggregate_reflections = self.aggregate_reflections.merge(name => reflection) - else - self.reflections = self.reflections.merge(name => reflection) - end - - reflection - end - # Returns an array of AggregateReflection objects for all the aggregations in the class. def reflect_on_all_aggregations aggregate_reflections.values @@ -191,7 +193,7 @@ module ActiveRecord attr_reader :type, :foreign_type - def initialize(*args) + def initialize(macro, name, scope, options, active_record) super @collection = [:has_many, :has_and_belongs_to_many].include?(macro) @automatic_inverse_of = nil @@ -267,7 +269,7 @@ module ActiveRecord end def source_reflection - nil + self end # A chain of reflections from this one back to the owner. For more see the explanation in @@ -369,6 +371,12 @@ module ActiveRecord VALID_AUTOMATIC_INVERSE_MACROS = [:has_many, :has_one, :belongs_to] INVALID_AUTOMATIC_INVERSE_OPTIONS = [:conditions, :through, :polymorphic, :foreign_key] + protected + + def actual_source_reflection # FIXME: this is a horrible name + self + end + private # Attempts to find the inverse association name automatically. # If it cannot find a suitable inverse association name, it returns @@ -527,7 +535,9 @@ module ActiveRecord # def chain @chain ||= begin - chain = source_reflection.chain + through_reflection.chain + a = source_reflection.chain + b = through_reflection.chain + chain = a + b chain[0] = self # Use self so we don't lose the information from :source_type chain end @@ -578,7 +588,7 @@ module ActiveRecord # A through association is nested if there would be more than one join table def nested? - chain.length > 2 || through_reflection.macro == :has_and_belongs_to_many + chain.length > 2 || through_reflection.has_and_belongs_to_many? end # We want to use the klass from this reflection, rather than just delegate straight to @@ -587,12 +597,7 @@ module ActiveRecord def association_primary_key(klass = nil) # Get the "actual" source reflection if the immediate source reflection has a # source reflection itself - source_reflection = self.source_reflection - while source_reflection.source_reflection - source_reflection = source_reflection.source_reflection - end - - source_reflection.options[:primary_key] || primary_key(klass || self.klass) + actual_source_reflection.options[:primary_key] || primary_key(klass || self.klass) end # Gets an array of possible <tt>:through</tt> source reflection names in both singular and plural form. @@ -671,6 +676,12 @@ directive on your declaration like: check_validity_of_inverse! end + protected + + def actual_source_reflection # FIXME: this is a horrible name + source_reflection.actual_source_reflection + end + private def derive_class_name # get the class_name of the belongs_to association of the through reflection diff --git a/activerecord/lib/active_record/relation/delegation.rb b/activerecord/lib/active_record/relation/delegation.rb index 8d6740246c..b6f80ac5c7 100644 --- a/activerecord/lib/active_record/relation/delegation.rb +++ b/activerecord/lib/active_record/relation/delegation.rb @@ -73,16 +73,8 @@ module ActiveRecord module ClassMethods # :nodoc: @@subclasses = ThreadSafe::Cache.new(:initial_capacity => 2) - def new(klass, *args) - relation = relation_class_for(klass).allocate - relation.__send__(:initialize, klass, *args) - relation - end - - # This doesn't have to be thread-safe. relation_class_for guarantees that this will only be - # called exactly once for a given const name. - def const_missing(name) - const_set(name, Class.new(self) { include ClassSpecificRelation }) + def create(klass, *args) + relation_class_for(klass).new(klass, *args) end private @@ -94,7 +86,13 @@ module ActiveRecord # This hash is keyed by klass.name to avoid memory leaks in development mode my_cache.compute_if_absent(klass_name) do # Cache#compute_if_absent guarantees that the block will only executed once for the given klass_name - const_get("#{name.gsub('::', '_')}_#{klass_name.gsub('::', '_')}", false) + subclass_name = "#{name.gsub('::', '_')}_#{klass_name.gsub('::', '_')}" + + if const_defined?(subclass_name) + const_get(subclass_name) + else + const_set(subclass_name, Class.new(self) { include ClassSpecificRelation }) + end end else ActiveRecord::Relation diff --git a/activerecord/lib/active_record/relation/merger.rb b/activerecord/lib/active_record/relation/merger.rb index da13152e01..c08158d38b 100644 --- a/activerecord/lib/active_record/relation/merger.rb +++ b/activerecord/lib/active_record/relation/merger.rb @@ -22,7 +22,7 @@ module ActiveRecord # build a relation to merge in rather than directly merging # the values. def other - other = Relation.new(relation.klass, relation.table) + other = Relation.create(relation.klass, relation.table) hash.each { |k, v| if k == :joins if Hash === v diff --git a/activerecord/lib/active_record/relation/predicate_builder.rb b/activerecord/lib/active_record/relation/predicate_builder.rb index 08ef899f68..8948f2bba5 100644 --- a/activerecord/lib/active_record/relation/predicate_builder.rb +++ b/activerecord/lib/active_record/relation/predicate_builder.rb @@ -1,5 +1,10 @@ module ActiveRecord class PredicateBuilder # :nodoc: + @handlers = [] + + autoload :RelationHandler, 'active_record/relation/predicate_builder/relation_handler' + autoload :ArrayHandler, 'active_record/relation/predicate_builder/array_handler' + def self.resolve_column_aliases(klass, hash) hash = hash.dup hash.keys.grep(Symbol) do |key| @@ -73,44 +78,36 @@ module ActiveRecord end.compact end + # Define how a class is converted to Arel nodes when passed to +where+. + # The handler can be any object that responds to +call+, and will be used + # for any value that +===+ the class given. For example: + # + # MyCustomDateRange = Struct.new(:start, :end) + # handler = proc do |column, range| + # Arel::Nodes::Between.new(column, + # Arel::Nodes::And.new([range.start, range.end]) + # ) + # end + # ActiveRecord::PredicateBuilder.register_handler(MyCustomDateRange, handler) + def self.register_handler(klass, handler) + @handlers.unshift([klass, handler]) + end + + register_handler(BasicObject, ->(attribute, value) { attribute.eq(value) }) + # FIXME: I think we need to deprecate this behavior + register_handler(Class, ->(attribute, value) { attribute.eq(value.name) }) + register_handler(Base, ->(attribute, value) { attribute.eq(value.id) }) + register_handler(Range, ->(attribute, value) { attribute.in(value) }) + register_handler(Relation, RelationHandler.new) + register_handler(Array, ArrayHandler.new) + private def self.build(attribute, value) - case value - when Array - values = value.to_a.map {|x| x.is_a?(Base) ? x.id : x} - ranges, values = values.partition {|v| v.is_a?(Range)} - - values_predicate = if values.include?(nil) - values = values.compact - - case values.length - when 0 - attribute.eq(nil) - when 1 - attribute.eq(values.first).or(attribute.eq(nil)) - else - attribute.in(values).or(attribute.eq(nil)) - end - else - attribute.in(values) - end + handler_for(value).call(attribute, value) + end - array_predicates = ranges.map { |range| attribute.in(range) } - array_predicates << values_predicate - array_predicates.inject { |composite, predicate| composite.or(predicate) } - when ActiveRecord::Relation - value = value.select(value.klass.arel_table[value.klass.primary_key]) if value.select_values.empty? - attribute.in(value.arel.ast) - when Range - attribute.in(value) - when ActiveRecord::Base - attribute.eq(value.id) - when Class - # FIXME: I think we need to deprecate this behavior - attribute.eq(value.name) - else - attribute.eq(value) - end + def self.handler_for(object) + @handlers.detect { |klass, _| klass === object }.last end end end diff --git a/activerecord/lib/active_record/relation/predicate_builder/array_handler.rb b/activerecord/lib/active_record/relation/predicate_builder/array_handler.rb new file mode 100644 index 0000000000..2f6c34ac08 --- /dev/null +++ b/activerecord/lib/active_record/relation/predicate_builder/array_handler.rb @@ -0,0 +1,29 @@ +module ActiveRecord + class PredicateBuilder + class ArrayHandler # :nodoc: + def call(attribute, value) + values = value.map { |x| x.is_a?(Base) ? x.id : x } + ranges, values = values.partition { |v| v.is_a?(Range) } + + values_predicate = if values.include?(nil) + values = values.compact + + case values.length + when 0 + attribute.eq(nil) + when 1 + attribute.eq(values.first).or(attribute.eq(nil)) + else + attribute.in(values).or(attribute.eq(nil)) + end + else + attribute.in(values) + end + + array_predicates = ranges.map { |range| attribute.in(range) } + array_predicates << values_predicate + array_predicates.inject { |composite, predicate| composite.or(predicate) } + end + end + end +end diff --git a/activerecord/lib/active_record/relation/predicate_builder/relation_handler.rb b/activerecord/lib/active_record/relation/predicate_builder/relation_handler.rb new file mode 100644 index 0000000000..618fa3cdd9 --- /dev/null +++ b/activerecord/lib/active_record/relation/predicate_builder/relation_handler.rb @@ -0,0 +1,13 @@ +module ActiveRecord + class PredicateBuilder + class RelationHandler # :nodoc: + def call(attribute, value) + if value.select_values.empty? + value = value.select(value.klass.arel_table[value.klass.primary_key]) + end + + attribute.in(value.arel.ast) + end + end + end +end diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 612c7d17a3..49b632c4c7 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -100,6 +100,14 @@ module ActiveRecord # firing an additional query. This will often result in a # performance improvement over a simple +join+. # + # You can also specify multiple relationships, like this: + # + # users = User.includes(:address, :friends) + # + # Loading nested relationships is possible using a Hash: + # + # users = User.includes(:address, friends: [:address, :followers]) + # # === conditions # # If you want to add conditions to your included models you'll have @@ -291,7 +299,7 @@ module ActiveRecord arg } - self.order_values = args.concat self.order_values + self.order_values += args self end @@ -303,7 +311,7 @@ module ActiveRecord # # User.order('email DESC').reorder('id ASC').order('name ASC') # - # generates a query with 'ORDER BY name ASC, id ASC'. + # generates a query with 'ORDER BY id ASC, name ASC'. def reorder(*args) check_if_method_has_arguments!("reorder", args) spawn.reorder!(*args) @@ -948,10 +956,11 @@ module ActiveRecord join_dependency.graft(*stashed_association_joins) - # FIXME: refactor this to build an AST - join_dependency.join_associations.each do |association| - association.join_to(manager) - end + joins = join_dependency.join_associations.map { |association| + association.join_constraints + }.flatten + + joins.each { |join| manager.from join } manager.join_sources.concat join_list diff --git a/activerecord/lib/active_record/relation/spawn_methods.rb b/activerecord/lib/active_record/relation/spawn_methods.rb index c63ae9c9fb..2552cbd234 100644 --- a/activerecord/lib/active_record/relation/spawn_methods.rb +++ b/activerecord/lib/active_record/relation/spawn_methods.rb @@ -64,7 +64,7 @@ module ActiveRecord private def relation_with(values) # :nodoc: - result = Relation.new(klass, table, values) + result = Relation.create(klass, table, values) result.extend(*extending_values) if extending_values.any? result end diff --git a/activerecord/lib/active_record/result.rb b/activerecord/lib/active_record/result.rb index a7a035fe46..253368ae5b 100644 --- a/activerecord/lib/active_record/result.rb +++ b/activerecord/lib/active_record/result.rb @@ -3,8 +3,31 @@ module ActiveRecord # This class encapsulates a Result returned from calling +exec_query+ on any # database connection adapter. For example: # - # x = ActiveRecord::Base.connection.exec_query('SELECT * FROM foo') - # x # => #<ActiveRecord::Result:0xdeadbeef> + # result = ActiveRecord::Base.connection.exec_query('SELECT id, title, body FROM posts') + # result # => #<ActiveRecord::Result:0xdeadbeef> + # + # # Get the column names of the result: + # result.columns + # # => ["id", "title", "body"] + # + # # Get the record values of the result: + # result.rows + # # => [[1, "title_1", "body_1"], + # [2, "title_2", "body_2"], + # ... + # ] + # + # # Get an array of hashes representing the result (column => value): + # result.to_hash + # # => [{"id" => 1, "title" => "title_1", "body" => "body_1"}, + # {"id" => 2, "title" => "title_2", "body" => "body_2"}, + # ... + # ] + # + # # ActiveRecord::Result also includes Enumerable. + # result.each do |row| + # puts row['title'] + " " + row['body'] + # end class Result include Enumerable @@ -62,6 +85,7 @@ module ActiveRecord end private + def hash_rows @hash_rows ||= begin diff --git a/activerecord/lib/active_record/sanitization.rb b/activerecord/lib/active_record/sanitization.rb index 31e294022f..0b87ab9926 100644 --- a/activerecord/lib/active_record/sanitization.rb +++ b/activerecord/lib/active_record/sanitization.rb @@ -3,8 +3,8 @@ module ActiveRecord extend ActiveSupport::Concern module ClassMethods - def quote_value(value, column = nil) #:nodoc: - connection.quote(value,column) + def quote_value(value, column) #:nodoc: + connection.quote(value, column) end # Used to sanitize objects before they're used in an SQL SELECT statement. Delegates to <tt>connection.quote</tt>. |