diff options
Diffstat (limited to 'activerecord/lib')
74 files changed, 749 insertions, 421 deletions
diff --git a/activerecord/lib/active_record/associations.rb b/activerecord/lib/active_record/associations.rb index ec78d10124..12ca3a48a9 100644 --- a/activerecord/lib/active_record/associations.rb +++ b/activerecord/lib/active_record/associations.rb @@ -447,9 +447,11 @@ module ActiveRecord # # Possible callbacks are: +before_add+, +after_add+, +before_remove+ and +after_remove+. # - # Should any of the +before_add+ callbacks throw an exception, the object does not get - # added to the collection. Same with the +before_remove+ callbacks; if an exception is - # thrown the object doesn't get removed. + # If any of the +before_add+ callbacks throw an exception, the object will not be + # added to the collection. + # + # Similarly, if any of the +before_remove+ callbacks throw an exception, the object + # will not be removed from the collection. # # == Association extensions # @@ -647,7 +649,7 @@ module ActiveRecord # belongs_to :commenter # end # - # When using nested association, you will not be able to modify the association because there + # When using a nested association, you will not be able to modify the association because there # is not enough information to know what modification to make. For example, if you tried to # add a <tt>Commenter</tt> in the example above, there would be no way to tell how to set up the # intermediate <tt>Post</tt> and <tt>Comment</tt> objects. @@ -717,7 +719,7 @@ module ActiveRecord # == Eager loading of associations # # Eager loading is a way to find objects of a certain class and a number of named associations. - # This is one of the easiest ways of to prevent the dreaded N+1 problem in which fetching 100 + # It is one of the easiest ways to prevent the dreaded N+1 problem in which fetching 100 # posts that each need to display their author triggers 101 database queries. Through the # use of eager loading, the number of queries will be reduced from 101 to 2. # @@ -749,16 +751,16 @@ module ActiveRecord # Post.includes(:author, :comments).each do |post| # # This will load all comments with a single query. This reduces the total number of queries - # to 3. More generally the number of queries will be 1 plus the number of associations + # to 3. In general, the number of queries will be 1 plus the number of associations # named (except if some of the associations are polymorphic +belongs_to+ - see below). # # To include a deep hierarchy of associations, use a hash: # - # Post.includes(:author, {comments: {author: :gravatar}}).each do |post| + # Post.includes(:author, { comments: { author: :gravatar } }).each do |post| # - # That'll grab not only all the comments but all their authors and gravatar pictures. - # You can mix and match symbols, arrays and hashes in any combination to describe the - # associations you want to load. + # The above code will load all the comments and all of their associated + # authors and gravatars. You can mix and match any combination of symbols, + # arrays, and hashes to retrieve the associations you want to load. # # All of this power shouldn't fool you into thinking that you can pull out huge amounts # of data with no performance penalty just because you've reduced the number of queries. @@ -767,8 +769,8 @@ module ActiveRecord # cut down on the number of queries in a situation as the one described above. # # Since only one table is loaded at a time, conditions or orders cannot reference tables - # other than the main one. If this is the case Active Record falls back to the previously - # used LEFT OUTER JOIN based strategy. For example + # other than the main one. If this is the case, Active Record falls back to the previously + # used LEFT OUTER JOIN based strategy. For example: # # Post.includes([:author, :comments]).where(['comments.approved = ?', true]) # @@ -1052,7 +1054,7 @@ module ActiveRecord # Specifies a one-to-many association. The following methods for retrieval and query of # collections of associated objects will be added: # - # +collection+ is a placeholder for the symbol passed as the first argument, so + # +collection+ is a placeholder for the symbol passed as the +name+ argument, so # <tt>has_many :clients</tt> would add among others <tt>clients.empty?</tt>. # # [collection(force_reload = false)] @@ -1131,7 +1133,32 @@ module ActiveRecord # * <tt>Firm#clients.build</tt> (similar to <tt>Client.new("firm_id" => id)</tt>) # * <tt>Firm#clients.create</tt> (similar to <tt>c = Client.new("firm_id" => id); c.save; c</tt>) # * <tt>Firm#clients.create!</tt> (similar to <tt>c = Client.new("firm_id" => id); c.save!</tt>) - # The declaration can also include an options hash to specialize the behavior of the association. + # The declaration can also include an +options+ hash to specialize the behavior of the association. + # + # === Scopes + # + # You can pass a second argument +scope+ as a callable (i.e. proc or + # lambda) to retrieve a specific set of records or customize the generated + # query when you access the associated collection. + # + # Scope examples: + # has_many :comments, -> { where(author_id: 1) } + # has_many :employees, -> { joins(:address) } + # has_many :posts, ->(post) { where("max_post_length > ?", post.length) } + # + # === Extensions + # + # The +extension+ argument allows you to pass a block into a has_many + # association. This is useful for adding new finders, creators and other + # factory-type methods to be used as part of the association. + # + # Extension examples: + # has_many :employees do + # def find_or_create_by_name(name) + # first_name, last_name = name.split(" ", 2) + # find_or_create_by(first_name: first_name, last_name: last_name) + # end + # end # # === Options # [:class_name] @@ -1144,7 +1171,7 @@ module ActiveRecord # of this class in lower-case and "_id" suffixed. So a Person class that makes a +has_many+ # association will use "person_id" as the default <tt>:foreign_key</tt>. # [:primary_key] - # Specify the method that returns the primary key used for the association. By default this is +id+. + # Specify the name of the column to use as the primary key for the association. By default this is +id+. # [:dependent] # Controls what happens to the associated objects when # their owner is destroyed. Note that these are implemented as @@ -1209,7 +1236,7 @@ module ActiveRecord # Option examples: # has_many :comments, -> { order "posted_on" } # has_many :comments, -> { includes :author } - # has_many :people, -> { where("deleted = 0").order("name") }, class_name: "Person" + # has_many :people, -> { where(deleted: false).order("name") }, class_name: "Person" # has_many :tracks, -> { order "position" }, dependent: :destroy # has_many :comments, dependent: :nullify # has_many :tags, as: :taggable @@ -1227,7 +1254,7 @@ module ActiveRecord # # The following methods for retrieval and query of a single associated object will be added: # - # +association+ is a placeholder for the symbol passed as the first argument, so + # +association+ is a placeholder for the symbol passed as the +name+ argument, so # <tt>has_one :manager</tt> would add among others <tt>manager.nil?</tt>. # # [association(force_reload = false)] @@ -1257,9 +1284,20 @@ module ActiveRecord # * <tt>Account#create_beneficiary</tt> (similar to <tt>b = Beneficiary.new("account_id" => id); b.save; b</tt>) # * <tt>Account#create_beneficiary!</tt> (similar to <tt>b = Beneficiary.new("account_id" => id); b.save!; b</tt>) # + # === Scopes + # + # You can pass a second argument +scope+ as a callable (i.e. proc or + # lambda) to retrieve a specific record or customize the generated query + # when you access the associated object. + # + # Scope examples: + # has_one :author, -> { where(comment_id: 1) } + # has_one :employer, -> { joins(:company) } + # has_one :dob, ->(dob) { where("Date.new(2000, 01, 01) > ?", dob) } + # # === Options # - # The declaration can also include an options hash to specialize the behavior of the association. + # The declaration can also include an +options+ hash to specialize the behavior of the association. # # Options are: # [:class_name] @@ -1338,7 +1376,7 @@ module ActiveRecord # Methods will be added for retrieval and query for a single associated object, for which # this object holds an id: # - # +association+ is a placeholder for the symbol passed as the first argument, so + # +association+ is a placeholder for the symbol passed as the +name+ argument, so # <tt>belongs_to :author</tt> would add among others <tt>author.nil?</tt>. # # [association(force_reload = false)] @@ -1364,7 +1402,18 @@ module ActiveRecord # * <tt>Post#build_author</tt> (similar to <tt>post.author = Author.new</tt>) # * <tt>Post#create_author</tt> (similar to <tt>post.author = Author.new; post.author.save; post.author</tt>) # * <tt>Post#create_author!</tt> (similar to <tt>post.author = Author.new; post.author.save!; post.author</tt>) - # The declaration can also include an options hash to specialize the behavior of the association. + # The declaration can also include an +options+ hash to specialize the behavior of the association. + # + # === Scopes + # + # You can pass a second argument +scope+ as a callable (i.e. proc or + # lambda) to retrieve a specific record or customize the generated query + # when you access the associated object. + # + # Scope examples: + # belongs_to :user, -> { where(id: 2) } + # belongs_to :user, -> { joins(:friends) } + # belongs_to :level, ->(level) { where("game_level > ?", level.current) } # # === Options # @@ -1435,7 +1484,7 @@ module ActiveRecord # belongs_to :firm, foreign_key: "client_of" # belongs_to :person, primary_key: "name", foreign_key: "person_name" # belongs_to :author, class_name: "Person", foreign_key: "author_id" - # belongs_to :valid_coupon, ->(o) { where "discounts > #{o.payments_count}" }, + # belongs_to :valid_coupon, ->(o) { where "discounts > ?", o.payments_count }, # class_name: "Coupon", foreign_key: "coupon_id" # belongs_to :attachable, polymorphic: true # belongs_to :project, readonly: true @@ -1480,7 +1529,7 @@ module ActiveRecord # # Adds the following methods for retrieval and query: # - # +collection+ is a placeholder for the symbol passed as the first argument, so + # +collection+ is a placeholder for the symbol passed as the +name+ argument, so # <tt>has_and_belongs_to_many :categories</tt> would add among others <tt>categories.empty?</tt>. # # [collection(force_reload = false)] @@ -1541,7 +1590,34 @@ module ActiveRecord # * <tt>Developer#projects.exists?(...)</tt> # * <tt>Developer#projects.build</tt> (similar to <tt>Project.new("developer_id" => id)</tt>) # * <tt>Developer#projects.create</tt> (similar to <tt>c = Project.new("developer_id" => id); c.save; c</tt>) - # The declaration may include an options hash to specialize the behavior of the association. + # The declaration may include an +options+ hash to specialize the behavior of the association. + # + # === Scopes + # + # You can pass a second argument +scope+ as a callable (i.e. proc or + # lambda) to retrieve a specific set of records or customize the generated + # query when you access the associated collection. + # + # Scope examples: + # has_and_belongs_to_many :projects, -> { includes :milestones, :manager } + # has_and_belongs_to_many :categories, ->(category) { + # where("default_category = ?", category.name) + # } + # + # === Extensions + # + # The +extension+ argument allows you to pass a block into a + # has_and_belongs_to_many association. This is useful for adding new + # finders, creators and other factory-type methods to be used as part of + # the association. + # + # Extension examples: + # has_and_belongs_to_many :contractors do + # def find_or_create_by_name(name) + # first_name, last_name = name.split(" ", 2) + # find_or_create_by(first_name: first_name, last_name: last_name) + # end + # end # # === Options # diff --git a/activerecord/lib/active_record/associations/association_scope.rb b/activerecord/lib/active_record/associations/association_scope.rb index 519d4d8651..b965230e60 100644 --- a/activerecord/lib/active_record/associations/association_scope.rb +++ b/activerecord/lib/active_record/associations/association_scope.rb @@ -45,20 +45,20 @@ module ActiveRecord end def self.get_bind_values(owner, chain) - bvs = [] - chain.each_with_index do |reflection, i| - if reflection == chain.last - bvs << reflection.join_id_for(owner) - if reflection.type - bvs << owner.class.base_class.name - end - else - if reflection.type - bvs << chain[i + 1].klass.base_class.name - end + binds = [] + last_reflection = chain.last + + binds << last_reflection.join_id_for(owner) + if last_reflection.type + binds << owner.class.base_class.name + end + + chain.each_cons(2).each do |reflection, next_reflection| + if reflection.type + binds << next_reflection.klass.base_class.name end end - bvs + binds end private @@ -96,38 +96,55 @@ module ActiveRecord bind_value scope, column, value, tracker end + def last_chain_scope(scope, table, reflection, owner, tracker, assoc_klass) + join_keys = reflection.join_keys(assoc_klass) + key = join_keys.key + foreign_key = join_keys.foreign_key + + bind_val = bind scope, table.table_name, key.to_s, owner[foreign_key], tracker + scope = scope.where(table[key].eq(bind_val)) + + if reflection.type + value = owner.class.base_class.name + bind_val = bind scope, table.table_name, reflection.type, value, tracker + scope = scope.where(table[reflection.type].eq(bind_val)) + else + scope + end + end + + def next_chain_scope(scope, table, reflection, tracker, assoc_klass, foreign_table, next_reflection) + join_keys = reflection.join_keys(assoc_klass) + key = join_keys.key + foreign_key = join_keys.foreign_key + + constraint = table[key].eq(foreign_table[foreign_key]) + + if reflection.type + value = next_reflection.klass.base_class.name + bind_val = bind scope, table.table_name, reflection.type, value, tracker + scope = scope.where(table[reflection.type].eq(bind_val)) + end + + scope = scope.joins(join(foreign_table, constraint)) + end + def add_constraints(scope, owner, assoc_klass, refl, tracker) chain = refl.chain scope_chain = refl.scope_chain tables = construct_tables(chain, assoc_klass, refl, tracker) + owner_reflection = chain.last + table = tables.last + scope = last_chain_scope(scope, table, owner_reflection, owner, tracker, assoc_klass) + chain.each_with_index do |reflection, i| table, foreign_table = tables.shift, tables.first - join_keys = reflection.join_keys(assoc_klass) - key = join_keys.key - foreign_key = join_keys.foreign_key - - if reflection == chain.last - bind_val = bind scope, table.table_name, key.to_s, owner[foreign_key], tracker - scope = scope.where(table[key].eq(bind_val)) - - if reflection.type - value = owner.class.base_class.name - bind_val = bind scope, table.table_name, reflection.type.to_s, value, tracker - scope = scope.where(table[reflection.type].eq(bind_val)) - end - else - constraint = table[key].eq(foreign_table[foreign_key]) - - if reflection.type - value = chain[i + 1].klass.base_class.name - bind_val = bind scope, table.table_name, reflection.type.to_s, value, tracker - scope = scope.where(table[reflection.type].eq(bind_val)) - end - - scope = scope.joins(join(foreign_table, constraint)) + unless reflection == chain.last + next_reflection = chain[i + 1] + scope = next_chain_scope(scope, table, reflection, tracker, assoc_klass, foreign_table, next_reflection) end is_first_chain = i == 0 @@ -171,11 +188,7 @@ module ActiveRecord end def eval_scope(klass, scope, owner) - if scope.is_a?(Relation) - scope - else - klass.unscoped.instance_exec(owner, &scope) - end + klass.unscoped.instance_exec(owner, &scope) end end end diff --git a/activerecord/lib/active_record/associations/collection_association.rb b/activerecord/lib/active_record/associations/collection_association.rb index 065a2cff01..1836ff0910 100644 --- a/activerecord/lib/active_record/associations/collection_association.rb +++ b/activerecord/lib/active_record/associations/collection_association.rb @@ -407,7 +407,7 @@ module ActiveRecord private def get_records - return scope.to_a if reflection.scope_chain.any?(&:any?) + return scope.to_a if reflection.scope_chain.any?(&:any?) || scope.eager_loading? 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 84c8cfe72b..8c7b0b4be9 100644 --- a/activerecord/lib/active_record/associations/collection_proxy.rb +++ b/activerecord/lib/active_record/associations/collection_proxy.rb @@ -783,7 +783,7 @@ module ActiveRecord # person.pets.count # => 0 # person.pets.any? # => true # - # You can also pass a block to define criteria. The behavior + # You can also pass a +block+ to define criteria. The behavior # is the same, it returns true if the collection based on the # criteria is not empty. # @@ -817,7 +817,7 @@ module ActiveRecord # person.pets.count # => 2 # person.pets.many? # => true # - # You can also pass a block to define criteria. The + # You can also pass a +block+ to define criteria. The # behavior is the same, it returns true if the collection # based on the criteria has more than one record. # @@ -841,7 +841,7 @@ module ActiveRecord @association.many?(&block) end - # Returns +true+ if the given object is present in the collection. + # Returns +true+ if the given +record+ is present in the collection. # # class Person < ActiveRecord::Base # has_many :pets @@ -879,7 +879,7 @@ module ActiveRecord # Equivalent to <tt>Array#==</tt>. Returns +true+ if the two arrays # contain the same number of elements and if each element is equal - # to the corresponding element in the other array, otherwise returns + # to the corresponding element in the +other+ array, otherwise returns # +false+. # # class Person < ActiveRecord::Base diff --git a/activerecord/lib/active_record/associations/has_many_association.rb b/activerecord/lib/active_record/associations/has_many_association.rb index 79c3d2b0f5..1413efaf7f 100644 --- a/activerecord/lib/active_record/associations/has_many_association.rb +++ b/activerecord/lib/active_record/associations/has_many_association.rb @@ -103,7 +103,7 @@ module ActiveRecord if has_cached_counter?(reflection) counter = cached_counter_attribute_name(reflection) owner[counter] += difference - owner.changed_attributes.delete(counter) # eww + owner.send(:clear_attribute_changes, counter) # eww end 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 44c4436e95..455a540bdb 100644 --- a/activerecord/lib/active_record/associations/has_many_through_association.rb +++ b/activerecord/lib/active_record/associations/has_many_through_association.rb @@ -63,12 +63,12 @@ module ActiveRecord save_through_record(record) if has_cached_counter? && !through_reflection_updates_counter_cache? - ActiveSupport::Deprecation.warn(<<-MESSAGE.strip_heredoc) - Automatic updating of counter caches on through associations has been - deprecated, and will be removed in Rails 5.0. Instead, please set the - appropriate counter_cache options on the has_many and belongs_to for - your associations to #{through_reflection.name}. - MESSAGE + ActiveSupport::Deprecation.warn \ + "Automatic updating of counter caches on through associations has been " \ + "deprecated, and will be removed in Rails 5.0. Instead, please set the " \ + "appropriate counter_cache options on the has_many and belongs_to for " \ + "your associations to #{through_reflection.name}." + update_counter_in_database(1) end record @@ -159,7 +159,7 @@ module ActiveRecord count = scope.destroy_all.length else scope.to_a.each do |record| - record.run_callbacks :destroy + record.run_destroy_callbacks end arel = scope.arel 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 c3bbdccad8..e7d3c9ba40 100644 --- a/activerecord/lib/active_record/associations/join_dependency/join_association.rb +++ b/activerecord/lib/active_record/associations/join_dependency/join_association.rb @@ -65,7 +65,7 @@ module ActiveRecord if reflection.type value = foreign_klass.base_class.name - column = klass.columns_hash[column.to_s] + column = klass.columns_hash[reflection.type.to_s] substitute = klass.connection.substitute_at(column, bind_values.length) bind_values.push [column, value] diff --git a/activerecord/lib/active_record/associations/join_dependency/join_part.rb b/activerecord/lib/active_record/associations/join_dependency/join_part.rb index 91e1c6a9d7..9c6573f913 100644 --- a/activerecord/lib/active_record/associations/join_dependency/join_part.rb +++ b/activerecord/lib/active_record/associations/join_dependency/join_part.rb @@ -19,7 +19,6 @@ module ActiveRecord def initialize(base_klass, children) @base_klass = base_klass - @column_names_with_alias = nil @children = children end diff --git a/activerecord/lib/active_record/associations/preloader.rb b/activerecord/lib/active_record/associations/preloader.rb index 7519fec10a..46bccbf15a 100644 --- a/activerecord/lib/active_record/associations/preloader.rb +++ b/activerecord/lib/active_record/associations/preloader.rb @@ -2,33 +2,42 @@ module ActiveRecord module Associations # Implements the details of eager loading of Active Record associations. # - # Note that 'eager loading' and 'preloading' are actually the same thing. - # However, there are two different eager loading strategies. + # Suppose that you have the following two Active Record models: # - # The first one is by using table joins. This was only strategy available - # prior to Rails 2.1. Suppose that you have an Author model with columns - # 'name' and 'age', and a Book model with columns 'name' and 'sales'. Using - # this strategy, Active Record would try to retrieve all data for an author - # and all of its books via a single query: + # class Author < ActiveRecord::Base + # # columns: name, age + # has_many :books + # end # - # SELECT * FROM authors - # LEFT OUTER JOIN books ON authors.id = books.author_id - # WHERE authors.name = 'Ken Akamatsu' + # class Book < ActiveRecord::Base + # # columns: title, sales + # end # - # However, this could result in many rows that contain redundant data. After - # having received the first row, we already have enough data to instantiate - # the Author object. In all subsequent rows, only the data for the joined - # 'books' table is useful; the joined 'authors' data is just redundant, and - # processing this redundant data takes memory and CPU time. The problem - # quickly becomes worse and worse as the level of eager loading increases - # (i.e. if Active Record is to eager load the associations' associations as - # well). + # 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 + # + # => SELECT `authors`.* FROM `authors` WHERE `name` IN ('bell hooks', 'Homer') + # => SELECT `books`.* FROM `books` WHERE `author_id` IN (2, 5) + # + # Active Record saves the ids of the records from the first query to use in + # the second. Depending on the number of associations involved there can be + # arbitrarily many SQL queries made. + # + # However, if there is a WHERE clause that spans across tables Active + # Record will fall back to a slightly more resource-intensive single query: + # + # Author.includes(:books).where(books: {title: 'Illiad'}).to_a + # => SELECT `authors`.`id` AS t0_r0, `authors`.`name` AS t0_r1, `authors`.`age` AS t0_r2, + # `books`.`id` AS t1_r0, `books`.`title` AS t1_r1, `books`.`sales` AS t1_r2 + # FROM `authors` + # LEFT OUTER JOIN `books` ON `authors`.`id` = `books`.`author_id` + # WHERE `books`.`title` = 'Illiad' + # + # This could result in many rows that contain redundant data and it performs poorly at scale + # and is therefore only used when necessary. # - # The second strategy is to use multiple database queries, one for each - # level of association. Since Rails 2.1, this is the default strategy. In - # situations where a table join is necessary (e.g. when the +:conditions+ - # option references an association's column), it will fallback to the table - # join strategy. class Preloader #:nodoc: extend ActiveSupport::Autoload diff --git a/activerecord/lib/active_record/associations/preloader/through_association.rb b/activerecord/lib/active_record/associations/preloader/through_association.rb index 1fed7f74e7..d57da366bd 100644 --- a/activerecord/lib/active_record/associations/preloader/through_association.rb +++ b/activerecord/lib/active_record/associations/preloader/through_association.rb @@ -63,7 +63,7 @@ module ActiveRecord should_reset = (through_scope != through_reflection.klass.unscoped) || (reflection.options[:source_type] && through_reflection.collection?) - # Dont cache the association - we would only be caching a subset + # Don't cache the association - we would only be caching a subset if should_reset owners.each { |owner| owner.association(association_name).reset diff --git a/activerecord/lib/active_record/associations/singular_association.rb b/activerecord/lib/active_record/associations/singular_association.rb index f2e3a4e40f..b9326b9683 100644 --- a/activerecord/lib/active_record/associations/singular_association.rb +++ b/activerecord/lib/active_record/associations/singular_association.rb @@ -39,7 +39,7 @@ module ActiveRecord end def get_records - return scope.limit(1).to_a if reflection.scope_chain.any?(&:any?) + return scope.limit(1).to_a if reflection.scope_chain.any?(&:any?) || scope.eager_loading? 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 611d471e62..e47e81aa0f 100644 --- a/activerecord/lib/active_record/associations/through_association.rb +++ b/activerecord/lib/active_record/associations/through_association.rb @@ -15,7 +15,11 @@ module ActiveRecord scope = super reflection.chain.drop(1).each do |reflection| relation = reflection.klass.all - relation.merge!(reflection.scope) if reflection.scope + + reflection_scope = reflection.scope + if reflection_scope && reflection_scope.arity.zero? + relation.merge!(reflection_scope) + end scope.merge!( relation.except(:select, :create_with, :includes, :preload, :joins, :eager_load) diff --git a/activerecord/lib/active_record/attribute.rb b/activerecord/lib/active_record/attribute.rb index 6d38224830..8cc1904575 100644 --- a/activerecord/lib/active_record/attribute.rb +++ b/activerecord/lib/active_record/attribute.rb @@ -30,10 +30,14 @@ module ActiveRecord def value # `defined?` is cheaper than `||=` when we get back falsy values - @value = type_cast(value_before_type_cast) unless defined?(@value) + @value = original_value unless defined?(@value) @value end + def original_value + type_cast(value_before_type_cast) + end + def value_for_database type.type_cast_for_database(value) end @@ -54,7 +58,7 @@ module ActiveRecord self.class.from_database(name, value, type) end - def type_cast + def type_cast(*) raise NotImplementedError end @@ -62,6 +66,13 @@ module ActiveRecord true end + def ==(other) + self.class == other.class && + name == other.name && + value_before_type_cast == other.value_before_type_cast && + type == other.type + end + protected def initialize_dup(other) diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb index a2bb78dfcc..f4a4e3f605 100644 --- a/activerecord/lib/active_record/attribute_methods.rb +++ b/activerecord/lib/active_record/attribute_methods.rb @@ -31,7 +31,7 @@ module ActiveRecord end } - BLACKLISTED_CLASS_METHODS = %w(private public protected) + BLACKLISTED_CLASS_METHODS = %w(private public protected allocate new name parent superclass) class AttributeMethodCache def initialize @@ -57,6 +57,8 @@ module ActiveRecord end end + class GeneratedAttributeMethods < Module; end # :nodoc: + module ClassMethods def inherited(child_class) #:nodoc: child_class.initialize_generated_modules @@ -64,9 +66,11 @@ module ActiveRecord end def initialize_generated_modules # :nodoc: - @generated_attribute_methods = Module.new { extend Mutex_m } + @generated_attribute_methods = GeneratedAttributeMethods.new { extend Mutex_m } @attribute_methods_generated = false include @generated_attribute_methods + + super end # Generates all the attribute related methods for columns in the database @@ -107,16 +111,17 @@ module ActiveRecord # # => false def instance_method_already_implemented?(method_name) if dangerous_attribute_method?(method_name) - raise DangerousAttributeError, "#{method_name} is defined by Active Record" + raise DangerousAttributeError, "#{method_name} is defined by Active Record. Check to make sure that you don't have an attribute or method with the same name." end if superclass == Base super else - # If B < A and A defines its own attribute method, then we don't want to overwrite that. - defined = method_defined_within?(method_name, superclass, superclass.generated_attribute_methods) - base_defined = Base.method_defined?(method_name) || Base.private_method_defined?(method_name) - defined && !base_defined || super + # If ThisClass < ... < SomeSuperClass < ... < Base and SomeSuperClass + # defines its own attribute method, then we don't want to overwrite that. + defined = method_defined_within?(method_name, superclass, Base) && + ! superclass.instance_method(method_name).owner.is_a?(GeneratedAttributeMethods) + defined || super end end @@ -200,11 +205,9 @@ module ActiveRecord def column_for_attribute(name) column = columns_hash[name.to_s] if column.nil? - ActiveSupport::Deprecation.warn(<<-MESSAGE.strip_heredoc) - `column_for_attribute` will return a null object for non-existent columns - in Rails 5.0. Use `has_attribute?` if you need to check for an - attribute's existence. - MESSAGE + ActiveSupport::Deprecation.warn \ + "`column_for_attribute` will return a null object for non-existent columns " \ + "in Rails 5.0. Use `has_attribute?` if you need to check for an attribute's existence." end column end @@ -279,9 +282,9 @@ module ActiveRecord end # Returns an <tt>#inspect</tt>-like string for the value of the - # attribute +attr_name+. String attributes are truncated upto 50 + # attribute +attr_name+. String attributes are truncated up to 50 # characters, Date and Time attributes are returned in the - # <tt>:db</tt> format, Array attributes are truncated upto 10 values. + # <tt>:db</tt> format, Array attributes are truncated up to 10 values. # Other attributes return the value of <tt>#inspect</tt> without # modification. # diff --git a/activerecord/lib/active_record/attribute_methods/dirty.rb b/activerecord/lib/active_record/attribute_methods/dirty.rb index b58295a106..2f02738f6d 100644 --- a/activerecord/lib/active_record/attribute_methods/dirty.rb +++ b/activerecord/lib/active_record/attribute_methods/dirty.rb @@ -43,22 +43,6 @@ module ActiveRecord calculate_changes_from_defaults end - def changed? - super || changed_in_place.any? - end - - def changed - super | changed_in_place - end - - def attribute_changed?(attr_name, options = {}) - result = super - # We can't change "from" something in place. Only setters can define - # "from" and "to" - result ||= changed_in_place?(attr_name) unless options.key?(:from) - result - end - def changes_applied super store_original_raw_attributes @@ -69,12 +53,28 @@ module ActiveRecord original_raw_attributes.clear end + def changed_attributes + # This should only be set by methods which will call changed_attributes + # multiple times when it is known that the computed value cannot change. + if defined?(@cached_changed_attributes) + @cached_changed_attributes + else + super.reverse_merge(attributes_changed_in_place).freeze + end + end + + def changes + cache_changed_attributes do + super + end + end + private def calculate_changes_from_defaults @changed_attributes = nil self.class.column_defaults.each do |attr, orig_value| - changed_attributes[attr] = orig_value if _field_changed?(attr, orig_value) + set_attribute_was(attr, orig_value) if _field_changed?(attr, orig_value) end end @@ -100,9 +100,9 @@ module ActiveRecord def save_changed_attribute(attr, old_value) if attribute_changed?(attr) - changed_attributes.delete(attr) unless _field_changed?(attr, old_value) + clear_attribute_changes(attr) unless _field_changed?(attr, old_value) else - changed_attributes[attr] = old_value if _field_changed?(attr, old_value) + set_attribute_was(attr, old_value) if _field_changed?(attr, old_value) end end @@ -132,6 +132,13 @@ module ActiveRecord @attributes[attr].changed_from?(old_value) end + def attributes_changed_in_place + changed_in_place.each_with_object({}) do |attr_name, h| + orig = @attributes[attr_name].original_value + h[attr_name] = orig + end + end + def changed_in_place self.class.attribute_names.select do |attr_name| changed_in_place?(attr_name) @@ -162,6 +169,13 @@ module ActiveRecord store_original_raw_attribute(attr) end end + + def cache_changed_attributes + @cached_changed_attributes = changed_attributes + yield + ensure + remove_instance_variable(:@cached_changed_attributes) + end end end end diff --git a/activerecord/lib/active_record/attribute_methods/primary_key.rb b/activerecord/lib/active_record/attribute_methods/primary_key.rb index cadad60ddd..9bd333bbac 100644 --- a/activerecord/lib/active_record/attribute_methods/primary_key.rb +++ b/activerecord/lib/active_record/attribute_methods/primary_key.rb @@ -39,6 +39,12 @@ module ActiveRecord read_attribute_before_type_cast(self.class.primary_key) end + # Returns the primary key previous value. + def id_was + sync_with_transaction_state + attribute_was(self.class.primary_key) + end + protected def attribute_method?(attr_name) @@ -54,7 +60,7 @@ module ActiveRecord end end - ID_ATTRIBUTE_METHODS = %w(id id= id? id_before_type_cast).to_set + ID_ATTRIBUTE_METHODS = %w(id id= id? id_before_type_cast id_was).to_set def dangerous_attribute_method?(method_name) super && !ID_ATTRIBUTE_METHODS.include?(method_name) diff --git a/activerecord/lib/active_record/attribute_methods/query.rb b/activerecord/lib/active_record/attribute_methods/query.rb index 0f9723febb..dc689f399a 100644 --- a/activerecord/lib/active_record/attribute_methods/query.rb +++ b/activerecord/lib/active_record/attribute_methods/query.rb @@ -8,7 +8,7 @@ module ActiveRecord end def query_attribute(attr_name) - value = read_attribute(attr_name) { |n| missing_attribute(n, caller) } + value = self[attr_name] case value when true then true diff --git a/activerecord/lib/active_record/attribute_methods/read.rb b/activerecord/lib/active_record/attribute_methods/read.rb index 10869dfc1e..bf2a084a00 100644 --- a/activerecord/lib/active_record/attribute_methods/read.rb +++ b/activerecord/lib/active_record/attribute_methods/read.rb @@ -46,9 +46,7 @@ module ActiveRecord protected def cached_attributes_deprecation_warning(method_name) - ActiveSupport::Deprecation.warn(<<-MESSAGE.strip_heredoc) - Calling `#{method_name}` is no longer necessary. All attributes are cached. - MESSAGE + ActiveSupport::Deprecation.warn "Calling `#{method_name}` is no longer necessary. All attributes are cached." end if Module.methods_transplantable? diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb index 264ce2bdfa..100d6d4229 100644 --- a/activerecord/lib/active_record/attribute_methods/serialization.rb +++ b/activerecord/lib/active_record/attribute_methods/serialization.rb @@ -54,10 +54,9 @@ module ActiveRecord end def serialized_attributes - ActiveSupport::Deprecation.warn(<<-WARNING.strip_heredoc) - `serialized_attributes` is deprecated without replacement, and will - be removed in Rails 5.0. - WARNING + ActiveSupport::Deprecation.warn "`serialized_attributes` is deprecated " \ + "without replacement, and will be removed in Rails 5.0." + @serialized_attributes ||= Hash[ columns.select { |t| t.cast_type.is_a?(Type::Serialized) }.map { |c| [c.name, c.cast_type.coder] diff --git a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb index f439bd1ffe..b7fe079ef5 100644 --- a/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb +++ b/activerecord/lib/active_record/attribute_methods/time_zone_conversion.rb @@ -2,6 +2,8 @@ module ActiveRecord module AttributeMethods module TimeZoneConversion class TimeZoneConverter < SimpleDelegator # :nodoc: + include Type::Decorator + def type_cast_from_database(value) convert_time_to_time_zone(super) end diff --git a/activerecord/lib/active_record/attribute_set/builder.rb b/activerecord/lib/active_record/attribute_set/builder.rb index 1e146a07da..d4a787f2fe 100644 --- a/activerecord/lib/active_record/attribute_set/builder.rb +++ b/activerecord/lib/active_record/attribute_set/builder.rb @@ -23,8 +23,11 @@ module ActiveRecord end def add_uninitialized_attributes(attributes) - types.except(*attributes.keys).each do |name, type| - attributes[name] = Attribute.uninitialized(name, type) + types.each_key do |name| + next if attributes.key? name + type = types[name] + attributes[name] = + Attribute.uninitialized(name, type) end end end diff --git a/activerecord/lib/active_record/autosave_association.rb b/activerecord/lib/active_record/autosave_association.rb index dd92e29199..c384e8c413 100644 --- a/activerecord/lib/active_record/autosave_association.rb +++ b/activerecord/lib/active_record/autosave_association.rb @@ -338,7 +338,6 @@ module ActiveRecord autosave = reflection.options[:autosave] if records = associated_records_to_validate_or_save(association, @new_record_before_save, autosave) - if autosave records_to_destroy = records.select(&:marked_for_destruction?) records_to_destroy.each { |record| association.destroy(record) } @@ -362,7 +361,6 @@ module ActiveRecord raise ActiveRecord::Rollback unless saved end - @new_record_before_save = false end # reconstruct the scope now that we know the owner's id @@ -405,7 +403,9 @@ module ActiveRecord # If the record is new or it has changed, returns true. def record_changed?(reflection, record, key) - record.new_record? || record[reflection.foreign_key] != key || record.attribute_changed?(reflection.foreign_key) + record.new_record? || + (record.has_attribute?(reflection.foreign_key) && record[reflection.foreign_key] != key) || + record.attribute_changed?(reflection.foreign_key) end # Saves the associated record if it's new or <tt>:autosave</tt> is enabled. diff --git a/activerecord/lib/active_record/callbacks.rb b/activerecord/lib/active_record/callbacks.rb index 5955673b42..1aa760157a 100644 --- a/activerecord/lib/active_record/callbacks.rb +++ b/activerecord/lib/active_record/callbacks.rb @@ -289,25 +289,25 @@ module ActiveRecord end def destroy #:nodoc: - run_callbacks(:destroy) { super } + run_destroy_callbacks { super } 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/connection_adapters/abstract/connection_pool.rb b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb index a5fa9d6adc..da43e5bb10 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/connection_pool.rb @@ -234,7 +234,7 @@ module ActiveRecord @spec = spec - @checkout_timeout = spec.config[:checkout_timeout] || 5 + @checkout_timeout = (spec.config[:checkout_timeout] && spec.config[:checkout_timeout].to_f) || 5 @reaper = Reaper.new self, spec.config[:reaping_frequency] @reaper.run @@ -360,7 +360,7 @@ module ActiveRecord synchronize do owner = conn.owner - conn.run_callbacks :checkin do + conn.run_checkin_callbacks do conn.expire end @@ -449,7 +449,7 @@ module ActiveRecord end def checkout_and_verify(c) - c.run_callbacks :checkout do + c.run_checkout_callbacks do c.verify! end c @@ -640,7 +640,7 @@ module ActiveRecord end def call(env) - testing = env.key?('rack.test') + testing = env['rack.test'] response = @app.call(env) response[2] = ::Rack::BodyProxy.new(response[2]) do 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 98e96099cb..ff8b3e9890 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/database_statements.rb @@ -83,6 +83,11 @@ module ActiveRecord exec_query(sql, name, binds) end + # Executes the truncate statement. + def truncate(table_name, name = nil) + raise NotImplementedError + end + # Executes update +sql+ statement in the context of this connection using # +binds+ as the bind substitutes. +name+ is logged along with # the executed +sql+ statement. 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 adad6cd542..6bab260f5a 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb @@ -1,3 +1,5 @@ +require 'active_support/core_ext/string/strip' + module ActiveRecord module ConnectionAdapters class AbstractAdapter 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 e44ccb7d81..fe00f9d750 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb @@ -56,6 +56,18 @@ module ActiveRecord end end + module TimestampDefaultDeprecation # :nodoc: + def emit_warning_if_null_unspecified(options) + return if options.key?(:null) + + ActiveSupport::Deprecation.warn \ + "`timestamp` was called without specifying an option for `null`. In Rails " \ + "5.0, this behavior will change to `null: false`. You should manually " \ + "specify `null: true` to prevent the behavior of your existing migrations " \ + "from changing." + end + end + # Represents the schema of an SQL table in an abstract way. This class # provides methods for manipulating the schema representation. # @@ -77,6 +89,8 @@ module ActiveRecord # The table definitions # The Columns are stored as a ColumnDefinition in the +columns+ attribute. class TableDefinition + include TimestampDefaultDeprecation + # An array of ColumnDefinition objects, representing the column changes # that have been defined. attr_accessor :indexes @@ -276,6 +290,7 @@ module ActiveRecord # <tt>:updated_at</tt> to the table. def timestamps(*args) options = args.extract_options! + emit_warning_if_null_unspecified(options) column(:created_at, :datetime, options) column(:updated_at, :datetime, options) end @@ -310,7 +325,6 @@ module ActiveRecord end column.limit = limit - column.array = options[:array] if column.respond_to?(:array) column.precision = options[:precision] column.scale = options[:scale] column.default = options[:default] @@ -405,6 +419,8 @@ module ActiveRecord # end # class Table + include TimestampDefaultDeprecation + def initialize(table_name, base) @table_name = table_name @base = base @@ -452,8 +468,9 @@ module ActiveRecord # Adds timestamps (+created_at+ and +updated_at+) columns to the table. See SchemaStatements#add_timestamps # # t.timestamps - def timestamps - @base.add_timestamps(@table_name) + def timestamps(options = {}) + emit_warning_if_null_unspecified(options) + @base.add_timestamps(@table_name, options) end # Changes the column's definition according to the new options. @@ -559,6 +576,5 @@ module ActiveRecord @base.native_database_types end end - end end 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 9bd0401e40..b05a4f8440 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_dumper.rb @@ -19,12 +19,16 @@ module ActiveRecord spec = {} spec[:name] = column.name.inspect spec[:type] = column.type.to_s - spec[:limit] = column.limit.inspect if column.limit != types[column.type][:limit] + spec[:null] = 'false' unless column.null + + limit = column.limit || 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 - spec[:null] = 'false' unless column.null - spec[:default] = schema_default(column) if column.has_default? - spec.delete(:default) if spec[:default].nil? + + default = schema_default(column) if column.has_default? + spec[:default] = default unless default.nil? + spec 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 10753defc2..7105df1ee4 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -43,13 +43,14 @@ module ActiveRecord # index_exists?(:suppliers, :company_id, name: "idx_company_id") # def index_exists?(table_name, column_name, options = {}) - column_names = Array(column_name) - index_name = options.key?(:name) ? options[:name].to_s : index_name(table_name, :column => column_names) - if options[:unique] - indexes(table_name).any?{ |i| i.unique && i.name == index_name } - else - indexes(table_name).any?{ |i| i.name == index_name } - end + column_names = Array(column_name).map(&:to_s) + index_name = options.key?(:name) ? options[:name].to_s : index_name(table_name, column: column_names) + checks = [] + checks << lambda { |i| i.name == index_name } + checks << lambda { |i| i.columns == column_names } + checks << lambda { |i| i.unique } if options[:unique] + + indexes(table_name).any? { |i| checks.all? { |check| check[i] } } end # Returns an array of Column objects for the table specified by +table_name+. @@ -838,9 +839,9 @@ module ActiveRecord # # add_timestamps(:suppliers) # - def add_timestamps(table_name) - add_column table_name, :created_at, :datetime - add_column table_name, :updated_at, :datetime + def add_timestamps(table_name, options = {}) + add_column table_name, :created_at, :datetime, options + add_column table_name, :updated_at, :datetime, options end # Removes the timestamp columns (+created_at+ and +updated_at+) from the table definition. diff --git a/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb b/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb index 4a7f2aaca8..fd666c8c39 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/transaction.rb @@ -22,6 +22,10 @@ module ActiveRecord @state == :rolledback end + def completed? + committed? || rolledback? + end + def set_state(state) if !VALID_STATES.include?(state) raise ArgumentError, "Invalid transaction state: #{state}" @@ -63,13 +67,19 @@ module ActiveRecord end def rollback_records - records.uniq.each do |record| + ite = records.uniq + while record = ite.shift begin record.rolledback! full_rollback? rescue => e + raise if ActiveRecord::Base.raise_in_transactional_callbacks record.logger.error(e) if record.respond_to?(:logger) && record.logger end end + ensure + ite.each do |i| + i.rolledback!(full_rollback?, false) + end end def commit @@ -77,13 +87,19 @@ module ActiveRecord end def commit_records - records.uniq.each do |record| + ite = records.uniq + while record = ite.shift begin record.committed! rescue => e + raise if ActiveRecord::Base.raise_in_transactional_callbacks record.logger.error(e) if record.respond_to?(:logger) && record.logger end end + ensure + ite.each do |i| + i.committed!(false) + end end def full_rollback?; true; end @@ -103,14 +119,16 @@ module ActiveRecord end def rollback - super connection.rollback_to_savepoint(savepoint_name) + super rollback_records end def commit - super connection.release_savepoint(savepoint_name) + super + parent = connection.transaction_manager.current_transaction + records.each { |r| parent.add_record(r) } end def full_rollback?; false; end @@ -128,14 +146,14 @@ module ActiveRecord end def rollback - super connection.rollback_db_transaction + super rollback_records end def commit - super connection.commit_db_transaction + super commit_records end end @@ -169,16 +187,20 @@ module ActiveRecord transaction = begin_transaction options yield rescue Exception => error - transaction.rollback if transaction + rollback_transaction if transaction raise ensure - begin - transaction.commit unless error - rescue Exception - transaction.rollback - raise - ensure - @stack.pop if transaction + unless error + if Thread.current.status == 'aborting' + rollback_transaction + else + begin + commit_transaction + rescue Exception + transaction.rollback unless transaction.state.completed? + raise + 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 a1b6671664..a0d9086875 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -66,6 +66,7 @@ module ActiveRecord # Most of the methods in the adapter are useful during migrations. Most # notably, the instance methods provided by SchemaStatement are very useful. class AbstractAdapter + ADAPTER_NAME = 'Abstract'.freeze include Quoting, DatabaseStatements, SchemaStatements include DatabaseLimits include QueryCache @@ -167,7 +168,7 @@ module ActiveRecord # Returns the human-readable name of the adapter. Use mixed case - one # can always use downcase if needed. def adapter_name - 'Abstract' + self.class::ADAPTER_NAME end # Does this adapter support migrations? @@ -239,6 +240,11 @@ module ActiveRecord false end + # Does this adapter support views? + def supports_views? + false + end + # This is meant to be implemented by the adapters that support extensions def disable_extension(name) end 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 e5417a9556..e4cfe843a8 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 +1,5 @@ require 'arel/visitors/bind_visitor' +require 'active_support/core_ext/string/strip' module ActiveRecord module ConnectionAdapters @@ -161,10 +162,6 @@ module ActiveRecord end end - def adapter_name #:nodoc: - self.class::ADAPTER_NAME - end - # Returns true, since this connection adapter supports migrations. def supports_migrations? true @@ -200,6 +197,10 @@ module ActiveRecord true end + def supports_views? + version[0] >= 5 + end + def native_database_types NATIVE_DATABASE_TYPES end @@ -388,6 +389,10 @@ module ActiveRecord end end + def truncate(table_name, name = nil) + execute "TRUNCATE TABLE #{quote_table_name(table_name)}", name + end + def table_exists?(name) return false unless name.present? return true if tables(nil, nil, name).any? @@ -639,18 +644,21 @@ module ActiveRecord def initialize_type_map(m) # :nodoc: super + m.register_type(%r(enum)i) do |sql_type| limit = sql_type[/^enum\((.+)\)/i, 1] .split(',').map{|enum| enum.strip.length - 2}.max Type::String.new(limit: limit) end - m.register_type %r(tinytext)i, Type::Text.new(limit: 255) - m.register_type %r(tinyblob)i, Type::Binary.new(limit: 255) - m.register_type %r(mediumtext)i, Type::Text.new(limit: 16777215) - m.register_type %r(mediumblob)i, Type::Binary.new(limit: 16777215) - m.register_type %r(longtext)i, Type::Text.new(limit: 2147483647) - m.register_type %r(longblob)i, Type::Binary.new(limit: 2147483647) + m.register_type %r(tinytext)i, Type::Text.new(limit: 2**8 - 1) + m.register_type %r(tinyblob)i, Type::Binary.new(limit: 2**8 - 1) + m.register_type %r(text)i, Type::Text.new(limit: 2**16 - 1) + m.register_type %r(blob)i, Type::Binary.new(limit: 2**16 - 1) + m.register_type %r(mediumtext)i, Type::Text.new(limit: 2**24 - 1) + m.register_type %r(mediumblob)i, Type::Binary.new(limit: 2**24 - 1) + m.register_type %r(longtext)i, Type::Text.new(limit: 2**32 - 1) + m.register_type %r(longblob)i, Type::Binary.new(limit: 2**32 - 1) m.register_type %r(^bigint)i, Type::Integer.new(limit: 8) m.register_type %r(^int)i, Type::Integer.new(limit: 4) m.register_type %r(^mediumint)i, Type::Integer.new(limit: 3) @@ -764,8 +772,8 @@ module ActiveRecord "DROP INDEX #{index_name}" end - def add_timestamps_sql(table_name) - [add_column_sql(table_name, :created_at, :datetime), add_column_sql(table_name, :updated_at, :datetime)] + def add_timestamps_sql(table_name, options = {}) + [add_column_sql(table_name, :created_at, :datetime, options), add_column_sql(table_name, :updated_at, :datetime, options)] end def remove_timestamps_sql(table_name) @@ -782,10 +790,6 @@ module ActiveRecord full_version =~ /mariadb/i end - def supports_views? - version[0] >= 5 - end - def supports_rename_index? mariadb? ? false : (version[0] == 5 && version[1] >= 7) || version[0] >= 6 end @@ -812,7 +816,11 @@ module ActiveRecord # NAMES does not have an equals sign, see # http://dev.mysql.com/doc/refman/5.0/en/set-statement.html#id944430 # (trailing comma because variable_assignments will always have content) - encoding = "NAMES #{@config[:encoding]}, " if @config[:encoding] + if @config[:encoding] + encoding = "NAMES #{@config[:encoding]}" + encoding << " COLLATE #{@config[:collation]}" if @config[:collation] + encoding << ", " + end # Gather up all of the SET variables... variable_assignments = variables.map do |k, v| diff --git a/activerecord/lib/active_record/connection_adapters/connection_specification.rb b/activerecord/lib/active_record/connection_adapters/connection_specification.rb index 5693031053..e02824b33d 100644 --- a/activerecord/lib/active_record/connection_adapters/connection_specification.rb +++ b/activerecord/lib/active_record/connection_adapters/connection_specification.rb @@ -32,8 +32,8 @@ module ActiveRecord # } def initialize(url) raise "Database URL cannot be empty" if url.blank? - @uri = URI.parse(url) - @adapter = @uri.scheme.gsub('-', '_') + @uri = uri_parser.parse(url) + @adapter = @uri.scheme.tr('-', '_') @adapter = "postgresql" if @adapter == "postgres" if @uri.opaque diff --git a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb index 39d52e6349..38bdddefba 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql2_adapter.rb @@ -29,7 +29,7 @@ module ActiveRecord module ConnectionAdapters class Mysql2Adapter < AbstractMysqlAdapter - ADAPTER_NAME = 'Mysql2' + ADAPTER_NAME = 'Mysql2'.freeze def initialize(connection, logger, connection_options, config) super diff --git a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb index a03bc28744..da3aecf69a 100644 --- a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb @@ -66,7 +66,7 @@ module ActiveRecord # * <tt>:sslcipher</tt> - Necessary to use MySQL with an SSL connection. # class MysqlAdapter < AbstractMysqlAdapter - ADAPTER_NAME = 'MySQL' + ADAPTER_NAME = 'MySQL'.freeze class StatementPool < ConnectionAdapters::StatementPool def initialize(connection, max = 1000) 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 34ed32ad35..380c50fc14 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/jsonb.rb @@ -12,7 +12,7 @@ module ActiveRecord # roundtripping 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 - # consitent with our encoder's output. + # consistent with our encoder's output. raw_old_value = type_cast_for_database(type_cast_from_database(raw_old_value)) super(raw_old_value, new_value) end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/range.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/range.rb index ae967d5167..84b9490ba3 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/range.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/range.rb @@ -25,10 +25,10 @@ module ActiveRecord if !infinity?(from) && extracted[:exclude_start] if from.respond_to?(:succ) from = from.succ - ActiveSupport::Deprecation.warn <<-MESSAGE -Excluding the beginning of a Range is only partialy supported through `#succ`. -This is not reliable and will be removed in the future. - MESSAGE + ActiveSupport::Deprecation.warn \ + "Excluding the beginning of a Range is only partialy supported " \ + "through `#succ`. This is not reliable and will be removed in " \ + "the future." else raise ArgumentError, "The Ruby Range object does not support excluding the beginning of a Range. (unsupported value: '#{value}')" end diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb b/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb index dd97393eac..033e0324bb 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/oid/uuid.rb @@ -12,6 +12,8 @@ module ActiveRecord [a-fA-F0-9]{4}-? [a-fA-F0-9]{4}-?\}?\z}x + alias_method :type_cast_for_database, :type_cast_from_database + def type :uuid end 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 83554bbf74..b37630a04c 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_definitions.rb @@ -131,12 +131,10 @@ module ActiveRecord column name, type, options end - def column(name, type = nil, options = {}) - super - column = self[name] + def new_column_definition(name, type, options) # :nodoc: + column = super column.array = options[:array] - - self + column end private 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 7042817672..799aafbd99 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -60,8 +60,8 @@ module ActiveRecord def create_database(name, options = {}) options = { encoding: 'utf8' }.merge!(options.symbolize_keys) - option_string = options.sum do |key, value| - case key + option_string = options.inject("") do |memo, (key, value)| + memo += case key when :owner " OWNER = \"#{value}\"" when :template @@ -281,9 +281,9 @@ module ActiveRecord def default_sequence_name(table_name, pk = nil) #:nodoc: result = serial_sequence(table_name, pk || 'id') return nil unless result - Utils.extract_schema_qualified_name(result) + Utils.extract_schema_qualified_name(result).to_s rescue ActiveRecord::StatementInvalid - PostgreSQL::Name.new(nil, "#{table_name}_#{pk || 'id'}_seq") + PostgreSQL::Name.new(nil, "#{table_name}_#{pk || 'id'}_seq").to_s end def serial_sequence(table, column) @@ -466,7 +466,7 @@ module ActiveRecord def foreign_keys(table_name) fk_info = select_all <<-SQL.strip_heredoc - SELECT t2.relname AS to_table, a1.attname AS column, a2.attname AS primary_key, c.conname AS name, c.confupdtype AS on_update, c.confdeltype AS on_delete + SELECT t2.oid::regclass::text AS to_table, a1.attname AS column, a2.attname AS primary_key, c.conname AS name, c.confupdtype AS on_update, c.confdeltype AS on_delete FROM pg_constraint c JOIN pg_class t1 ON c.conrelid = t1.oid JOIN pg_class t2 ON c.confrelid = t2.oid @@ -488,6 +488,7 @@ module ActiveRecord options[:on_delete] = extract_foreign_key_action(row['on_delete']) options[:on_update] = extract_foreign_key_action(row['on_update']) + ForeignKeyDefinition.new(table_name, row['to_table'], options) end end @@ -549,7 +550,8 @@ module ActiveRecord # Convert Arel node to string s = s.to_sql unless s.is_a?(String) # Remove any ASC/DESC modifiers - s.gsub(/\s+(?:ASC|DESC)?\s*(?:NULLS\s+(?:FIRST|LAST)\s*)?/i, '') + s.gsub(/\s+(?:ASC|DESC)\b/i, '') + .gsub(/\s+NULLS\s+(?:FIRST|LAST)\b/i, '') }.reject(&:blank?).map.with_index { |column, i| "#{column} AS alias_#{i}" } [super, *order_columns].join(', ') diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index eede374678..0d74cb6707 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -74,7 +74,7 @@ module ActiveRecord # 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 . class PostgreSQLAdapter < AbstractAdapter - ADAPTER_NAME = 'PostgreSQL' + ADAPTER_NAME = 'PostgreSQL'.freeze NATIVE_DATABASE_TYPES = { primary_key: "serial primary key", @@ -118,11 +118,6 @@ module ActiveRecord include PostgreSQL::DatabaseStatements include Savepoints - # Returns 'PostgreSQL' as adapter name for identification purposes. - def adapter_name - ADAPTER_NAME - end - def schema_creation # :nodoc: PostgreSQL::SchemaCreation.new self end @@ -163,6 +158,10 @@ module ActiveRecord true end + def supports_views? + true + end + def index_algorithms { concurrently: 'CONCURRENTLY' } end @@ -256,6 +255,10 @@ module ActiveRecord @statements.clear end + def truncate(table_name, name = nil) + exec_query "TRUNCATE TABLE #{quote_table_name(table_name)}", name, [] + end + # Is this connection alive and ready for queries? def active? @connection.query 'SELECT 1' diff --git a/activerecord/lib/active_record/connection_adapters/schema_cache.rb b/activerecord/lib/active_record/connection_adapters/schema_cache.rb index 3116bed596..a10ce330c7 100644 --- a/activerecord/lib/active_record/connection_adapters/schema_cache.rb +++ b/activerecord/lib/active_record/connection_adapters/schema_cache.rb @@ -19,6 +19,7 @@ module ActiveRecord # A cached lookup for table existence. def table_exists?(name) + prepare_tables if @tables.empty? return @tables[name] if @tables.key? name @tables[name] = connection.table_exists?(name) @@ -82,6 +83,12 @@ module ActiveRecord def marshal_load(array) @version, @columns, @columns_hash, @primary_keys, @tables = array end + + private + + def prepare_tables + connection.tables.each { |table| @tables[table] = true } + 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 faf1cdc686..ebb311df57 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb @@ -67,6 +67,7 @@ module ActiveRecord # # * <tt>:database</tt> - Path to the database file. class SQLite3Adapter < AbstractAdapter + ADAPTER_NAME = 'SQLite'.freeze include Savepoints NATIVE_DATABASE_TYPES = { @@ -147,10 +148,6 @@ module ActiveRecord end end - def adapter_name #:nodoc: - 'SQLite' - end - def supports_ddl_transactions? true end @@ -186,6 +183,10 @@ module ActiveRecord true end + def supports_views? + true + end + def active? @active != false end @@ -372,7 +373,7 @@ module ActiveRecord sql = <<-SQL SELECT name FROM sqlite_master - WHERE type = 'table' AND NOT name = 'sqlite_sequence' + WHERE (type = 'table' OR type = 'view') AND NOT name = 'sqlite_sequence' SQL sql << " AND name = #{quote_table_name(table_name)}" if table_name diff --git a/activerecord/lib/active_record/core.rb b/activerecord/lib/active_record/core.rb index d22806fbdf..5571a2d297 100644 --- a/activerecord/lib/active_record/core.rb +++ b/activerecord/lib/active_record/core.rb @@ -124,6 +124,8 @@ module ActiveRecord def find(*ids) # We don't have cache keys for this stuff yet return super unless ids.length == 1 + # Allow symbols to super to maintain compatibility for deprecated finders until Rails 5 + return super if ids.first.kind_of?(Symbol) return super if block_given? || primary_key.nil? || default_scopes.any? || @@ -151,7 +153,8 @@ module ActiveRecord end def find_by(*args) - return super if current_scope || args.length > 1 || reflect_on_all_aggregations.any? + return super if current_scope || !(Hash === args.first) || reflect_on_all_aggregations.any? + return super if default_scopes.any? hash = args.first @@ -159,6 +162,9 @@ module ActiveRecord v.nil? || Array === v || Hash === v } + # We can't cache Post.find_by(author: david) ...yet + return super unless hash.keys.all? { |k| columns_hash.has_key?(k.to_s) } + key = hash.keys klass = self @@ -177,9 +183,11 @@ module ActiveRecord end end - def initialize_generated_modules - super + def find_by!(*args) + find_by(*args) or raise RecordNotFound.new("Couldn't find #{name}") + end + def initialize_generated_modules generated_association_methods end @@ -264,7 +272,7 @@ module ActiveRecord init_attributes(attributes, options) if attributes yield self if block_given? - run_callbacks :initialize unless _initialize_callbacks.empty? + run_initialize_callbacks end # Initialize an empty model object from +coder+. +coder+ must contain @@ -286,8 +294,8 @@ module ActiveRecord self.class.define_attribute_methods - run_callbacks :find - run_callbacks :initialize + run_find_callbacks + run_initialize_callbacks self end @@ -323,7 +331,7 @@ module ActiveRecord @attributes = @attributes.dup @attributes.reset(self.class.primary_key) - run_callbacks(:initialize) unless _initialize_callbacks.empty? + run_initialize_callbacks @aggregation_cache = {} @association_cache = {} diff --git a/activerecord/lib/active_record/counter_cache.rb b/activerecord/lib/active_record/counter_cache.rb index f0b6afc4b4..73fd96f979 100644 --- a/activerecord/lib/active_record/counter_cache.rb +++ b/activerecord/lib/active_record/counter_cache.rb @@ -20,7 +20,7 @@ module ActiveRecord def reset_counters(id, *counters) object = find(id) counters.each do |counter_association| - has_many_association = _reflect_on_association(counter_association.to_sym) + has_many_association = _reflect_on_association(counter_association) unless has_many_association has_many = reflect_on_all_associations(:has_many) has_many_association = has_many.find { |association| association.counter_cache_column && association.counter_cache_column.to_sym == counter_association.to_sym } diff --git a/activerecord/lib/active_record/enum.rb b/activerecord/lib/active_record/enum.rb index f0ee433d0b..5958373e88 100644 --- a/activerecord/lib/active_record/enum.rb +++ b/activerecord/lib/active_record/enum.rb @@ -145,11 +145,11 @@ module ActiveRecord value = read_attribute(attr_name) if attribute_changed?(attr_name) if mapping[old] == value - changed_attributes.delete(attr_name) + clear_attribute_changes([attr_name]) end else if old != value - changed_attributes[attr_name] = mapping.key old + set_attribute_was(attr_name, mapping.key(old)) end end else diff --git a/activerecord/lib/active_record/fixtures.rb b/activerecord/lib/active_record/fixtures.rb index 4306b36ae1..44cc1a079f 100644 --- a/activerecord/lib/active_record/fixtures.rb +++ b/activerecord/lib/active_record/fixtures.rb @@ -126,7 +126,7 @@ module ActiveRecord # that is included in <tt>ActiveRecord::FixtureSet.context_class</tt>. # # - define a helper method in `test_helper.rb` - # class FixtureFileHelpers + # module FixtureFileHelpers # def file_sha(path) # Digest::SHA2.hexdigest(File.read(Rails.root.join('test/fixtures', path))) # end @@ -181,6 +181,9 @@ module ActiveRecord # * Stable, autogenerated IDs # * Label references for associations (belongs_to, has_one, has_many) # * HABTM associations as inline lists + # + # There are some more advanced features available even if the id is specified: + # # * Autofilled timestamp columns # * Fixture label interpolation # * Support for YAML defaults @@ -515,14 +518,14 @@ module ActiveRecord ::File.join(fixtures_directory, fs_name)) end - all_loaded_fixtures.update(fixtures_map) + update_all_loaded_fixtures fixtures_map connection.transaction(:requires_new => true) do fixture_sets.each do |fs| conn = fs.model_class.respond_to?(:connection) ? fs.model_class.connection : connection table_rows = fs.table_rows - table_rows.keys.each do |table| + table_rows.each_key do |table| conn.delete "DELETE FROM #{conn.quote_table_name(table)}", 'Fixture Delete' end @@ -562,6 +565,10 @@ module ActiveRecord @context_class ||= Class.new end + def self.update_all_loaded_fixtures(fixtures_map) # :nodoc: + all_loaded_fixtures.update(fixtures_map) + end + attr_reader :table_name, :name, :fixtures, :model_class, :config def initialize(connection, name, class_name, path, config = ActiveRecord::Base) @@ -654,7 +661,7 @@ module ActiveRecord row[association.foreign_type] = $1 end - fk_type = association.active_record.columns_hash[association.foreign_key].type + fk_type = association.active_record.columns_hash[fk_name].type row[fk_name] = ActiveRecord::FixtureSet.identify(value, fk_type) end when :has_many @@ -870,11 +877,11 @@ module ActiveRecord def try_to_load_dependency(file_name) require_dependency file_name rescue LoadError => e - # Let's hope the developer has included it - # Let's warn in case this is a subdependency, otherwise - # subdependency error messages are totally cryptic - if ActiveRecord::Base.logger - ActiveRecord::Base.logger.warn("Unable to load #{file_name}, underlying cause #{e.message} \n\n #{e.backtrace.join("\n")}") + unless fixture_class_names.key?(file_name.pluralize) + if ActiveRecord::Base.logger + ActiveRecord::Base.logger.warn("Unable to load #{file_name}, make sure you added it to ActiveSupport::TestCase.set_fixture_class") + ActiveRecord::Base.logger.warn("underlying cause #{e.message} \n\n #{e.backtrace.join("\n")}") + end end end diff --git a/activerecord/lib/active_record/gem_version.rb b/activerecord/lib/active_record/gem_version.rb index 4a7aace460..91747d2ccf 100644 --- a/activerecord/lib/active_record/gem_version.rb +++ b/activerecord/lib/active_record/gem_version.rb @@ -1,5 +1,5 @@ module ActiveRecord - # Returns the version of the currently loaded ActiveRecord as a <tt>Gem::Version</tt> + # Returns the version of the currently loaded Active Record as a <tt>Gem::Version</tt> def self.gem_version Gem::Version.new VERSION::STRING end @@ -8,7 +8,7 @@ module ActiveRecord MAJOR = 4 MINOR = 2 TINY = 0 - PRE = "alpha" + PRE = "beta2" STRING = [MAJOR, MINOR, TINY, PRE].compact.join(".") end diff --git a/activerecord/lib/active_record/integration.rb b/activerecord/lib/active_record/integration.rb index 31e2518540..15b2f65dcb 100644 --- a/activerecord/lib/active_record/integration.rb +++ b/activerecord/lib/active_record/integration.rb @@ -55,16 +55,16 @@ module ActiveRecord def cache_key(*timestamp_names) case when new_record? - "#{self.class.model_name.cache_key}/new" + "#{model_name.cache_key}/new" when timestamp_names.any? timestamp = max_updated_column_timestamp(timestamp_names) timestamp = timestamp.utc.to_s(cache_timestamp_format) - "#{self.class.model_name.cache_key}/#{id}-#{timestamp}" + "#{model_name.cache_key}/#{id}-#{timestamp}" when timestamp = max_updated_column_timestamp timestamp = timestamp.utc.to_s(cache_timestamp_format) - "#{self.class.model_name.cache_key}/#{id}-#{timestamp}" + "#{model_name.cache_key}/#{id}-#{timestamp}" else - "#{self.class.model_name.cache_key}/#{id}" + "#{model_name.cache_key}/#{id}" end end diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index 7c4dad21a0..d0d9304a36 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -161,21 +161,14 @@ module ActiveRecord # in the <tt>db/migrate/</tt> directory where <tt>timestamp</tt> is the # UTC formatted date and time that the migration was generated. # - # You may then edit the <tt>up</tt> and <tt>down</tt> methods of - # MyNewMigration. - # # There is a special syntactic shortcut to generate migrations that add fields to a table. # # rails generate migration add_fieldname_to_tablename fieldname:string # # This will generate the file <tt>timestamp_add_fieldname_to_tablename</tt>, which will look like this: # class AddFieldnameToTablename < ActiveRecord::Migration - # def up - # add_column :tablenames, :fieldname, :string - # end - # - # def down - # remove_column :tablenames, :fieldname + # def change + # add_column :tablenames, :field, :string # end # end # @@ -188,9 +181,12 @@ module ActiveRecord # # To roll the database back to a previous migration version, use # <tt>rake db:migrate VERSION=X</tt> where <tt>X</tt> is the version to which - # you wish to downgrade. If any of the migrations throw an - # <tt>ActiveRecord::IrreversibleMigration</tt> exception, that step will fail and you'll - # have some manual work to do. + # you wish to downgrade. Alternatively, you can also use the STEP option if you + # wish to rollback last few migrations. <tt>rake db:migrate STEP=2</tt> will rollback + # the latest two migrations. + # + # If any of the migrations throw an <tt>ActiveRecord::IrreversibleMigration</tt> exception, + # that step will fail and you'll have some manual work to do. # # == Database support # @@ -399,7 +395,7 @@ module ActiveRecord def load_schema_if_pending! if ActiveRecord::Migrator.needs_migration? - ActiveRecord::Tasks::DatabaseTasks.load_schema + ActiveRecord::Tasks::DatabaseTasks.load_schema_current check_pending! end end @@ -836,21 +832,20 @@ module ActiveRecord SchemaMigration.table_name end - def get_all_versions - SchemaMigration.all.map { |x| x.version.to_i }.sort + def get_all_versions(connection = Base.connection) + if connection.table_exists?(schema_migrations_table_name) + SchemaMigration.all.map { |x| x.version.to_i }.sort + else + [] + end end def current_version(connection = Base.connection) - sm_table = schema_migrations_table_name - if connection.table_exists?(sm_table) - get_all_versions.max || 0 - else - 0 - end + get_all_versions(connection).max || 0 end def needs_migration?(connection = Base.connection) - current_version(connection) < last_version + (migrations(migrations_paths).collect(&:version) - get_all_versions(connection)).size > 0 end def last_version diff --git a/activerecord/lib/active_record/model_schema.rb b/activerecord/lib/active_record/model_schema.rb index 850220babd..171a6f4391 100644 --- a/activerecord/lib/active_record/model_schema.rb +++ b/activerecord/lib/active_record/model_schema.rb @@ -297,16 +297,13 @@ module ActiveRecord undefine_attribute_methods connection.schema_cache.clear_table_cache!(table_name) if table_exists? - @arel_engine = nil - @column_names = nil - @column_types = nil - @content_columns = nil - @default_attributes = nil - @dynamic_methods_hash = nil - @inheritance_column = nil unless defined?(@explicit_inheritance_column) && @explicit_inheritance_column - @relation = nil - @time_zone_column_names = nil - @cached_time_zone = nil + @arel_engine = nil + @column_names = nil + @column_types = nil + @content_columns = nil + @default_attributes = nil + @inheritance_column = nil unless defined?(@explicit_inheritance_column) && @explicit_inheritance_column + @relation = nil end private diff --git a/activerecord/lib/active_record/persistence.rb b/activerecord/lib/active_record/persistence.rb index f35865f54c..755ff2b2f1 100644 --- a/activerecord/lib/active_record/persistence.rb +++ b/activerecord/lib/active_record/persistence.rb @@ -36,8 +36,13 @@ module ActiveRecord end end - # Creates an object just like Base.create but calls <tt>save!</tt> instead of +save+ - # so an exception is raised if the record is invalid. + # Creates an object (or multiple objects) and saves it to the database, + # if validations pass. Raises a RecordInvalid error if validations fail, + # unlike Base#create. + # + # The +attributes+ parameter can be either a Hash or an Array of Hashes. + # These describe which attributes to be created on the object, or + # multiple objects when given an Array of Hashes. def create!(attributes = nil, &block) if attributes.is_a?(Array) attributes.collect { |attr| create!(attr, &block) } @@ -282,7 +287,8 @@ module ActiveRecord # This method raises an +ActiveRecord::ActiveRecordError+ when called on new # objects, or when at least one of the attributes is marked as readonly. def update_columns(attributes) - raise ActiveRecordError, "cannot update on a new record object" unless persisted? + raise ActiveRecordError, "cannot update a new record" if new_record? + raise ActiveRecordError, "cannot update a destroyed record" if destroyed? attributes.each_key do |key| verify_readonly_attribute(key.to_s) @@ -460,7 +466,7 @@ module ActiveRecord changes[self.class.locking_column] = increment_lock if locking_enabled? - changed_attributes.except!(*changes.keys) + clear_attribute_changes(changes.keys) primary_key = self.class.primary_key self.class.unscoped.where(primary_key => self[primary_key]).update_all(changes) == 1 else diff --git a/activerecord/lib/active_record/querying.rb b/activerecord/lib/active_record/querying.rb index a9ddd9141f..45b6b1c925 100644 --- a/activerecord/lib/active_record/querying.rb +++ b/activerecord/lib/active_record/querying.rb @@ -37,7 +37,8 @@ module ActiveRecord # Post.find_by_sql ["SELECT body FROM comments WHERE author = :user_id OR approved_by = :user_id", { :user_id => user_id }] def find_by_sql(sql, binds = []) result_set = connection.select_all(sanitize_sql(sql), "#{name} Load", binds) - column_types = result_set.column_types.except(*columns_hash.keys) + column_types = result_set.column_types.dup + columns_hash.each_key { |k| column_types.delete k } result_set.map { |record| instantiate(record, column_types) } end diff --git a/activerecord/lib/active_record/railties/databases.rake b/activerecord/lib/active_record/railties/databases.rake index ac385817e4..44765bd050 100644 --- a/activerecord/lib/active_record/railties/databases.rake +++ b/activerecord/lib/active_record/railties/databases.rake @@ -215,7 +215,7 @@ db_namespace = namespace :db do Dir["#{base_dir}/**/*.yml"].each do |file| if data = YAML::load(ERB.new(IO.read(file)).result) - data.keys.each do |key| + data.each_key do |key| key_id = ActiveRecord::FixtureSet.identify(key) if key == label || key_id == id.to_i @@ -240,7 +240,7 @@ db_namespace = namespace :db do desc 'Load a schema.rb file into the database' task :load => [:environment, :load_config] do - ActiveRecord::Tasks::DatabaseTasks.load_schema(:ruby, ENV['SCHEMA']) + ActiveRecord::Tasks::DatabaseTasks.load_schema_current(:ruby, ENV['SCHEMA']) end task :load_if_ruby => ['db:create', :environment] do @@ -286,7 +286,7 @@ db_namespace = namespace :db do desc "Recreate the databases from the structure.sql file" task :load => [:environment, :load_config] do - ActiveRecord::Tasks::DatabaseTasks.load_schema(:sql, ENV['DB_STRUCTURE']) + ActiveRecord::Tasks::DatabaseTasks.load_schema_current(:sql, ENV['DB_STRUCTURE']) end task :load_if_sql => ['db:create', :environment] do @@ -317,9 +317,8 @@ db_namespace = namespace :db do task :load_schema => %w(db:test:deprecated db:test:purge) do begin should_reconnect = ActiveRecord::Base.connection_pool.active_connection? - ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['test']) ActiveRecord::Schema.verbose = false - db_namespace["schema:load"].invoke + ActiveRecord::Tasks::DatabaseTasks.load_schema_for ActiveRecord::Base.configurations['test'], :ruby, ENV['SCHEMA'] ensure if should_reconnect ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations[ActiveRecord::Tasks::DatabaseTasks.env]) @@ -329,12 +328,7 @@ db_namespace = namespace :db do # desc "Recreate the test database from an existent structure.sql file" task :load_structure => %w(db:test:deprecated db:test:purge) do - begin - ActiveRecord::Tasks::DatabaseTasks.current_config(:config => ActiveRecord::Base.configurations['test']) - db_namespace["structure:load"].invoke - ensure - ActiveRecord::Tasks::DatabaseTasks.current_config(:config => nil) - end + ActiveRecord::Tasks::DatabaseTasks.load_schema_for ActiveRecord::Base.configurations['test'], :sql, ENV['SCHEMA'] end # desc "Recreate the test database from a fresh schema" diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 1547c8e3f4..6b5a592ee5 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -38,7 +38,7 @@ module ActiveRecord ar.aggregate_reflections = ar.aggregate_reflections.merge(name.to_s => reflection) end - # \Reflection enables interrogating Active Record classes and objects + # \Reflection enables interrogating of 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 # and creates input fields for all of the attributes depending on their type @@ -339,12 +339,13 @@ module ActiveRecord return unless scope if scope.arity > 0 - ActiveSupport::Deprecation.warn <<-WARNING -The association scope '#{name}' is instance dependent (the scope block takes an argument). -Preloading happens before the individual instances are created. This means that there is no instance -being passed to the association scope. This will most likely result in broken or incorrect behavior. -Joining, Preloading and eager loading of these associations is deprecated and will be removed in the future. - WARNING + ActiveSupport::Deprecation.warn \ + "The association scope '#{name}' is instance dependent (the scope " \ + "block takes an argument). Preloading happens before the individual " \ + "instances are created. This means that there is no instance being " \ + "passed to the association scope. This will most likely result in " \ + "broken or incorrect behavior. Joining, Preloading and eager loading " \ + "of these associations is deprecated and will be removed in the future." end end alias :check_eager_loadable! :check_preloadable! @@ -727,8 +728,11 @@ Joining, Preloading and eager loading of these associations is deprecated and wi through_scope_chain = through_reflection.scope_chain.map(&:dup) if options[:source_type] - through_scope_chain.first << - through_reflection.klass.where(foreign_type => options[:source_type]) + type = foreign_type + source_type = options[:source_type] + through_scope_chain.first << lambda { |object| + where(type => source_type) + } end # Recursively fill out the rest of the array from the through reflection @@ -787,15 +791,13 @@ Joining, Preloading and eager loading of these associations is deprecated and wi if names.length > 1 example_options = options.dup example_options[:source] = source_reflection_names.first - ActiveSupport::Deprecation.warn <<-eowarn -Ambiguous source reflection for through association. Please specify a :source -directive on your declaration like: - - class #{active_record.name} < ActiveRecord::Base - #{macro} :#{name}, #{example_options} - end - - eowarn + ActiveSupport::Deprecation.warn \ + "Ambiguous source reflection for through association. Please " \ + "specify a :source directive on your declaration like:\n" \ + "\n" \ + " class #{active_record.name} < ActiveRecord::Base\n" \ + " #{macro} :#{name}, #{example_options}\n" \ + " end" end @source_reflection_name = names.first diff --git a/activerecord/lib/active_record/relation/calculations.rb b/activerecord/lib/active_record/relation/calculations.rb index 90e99957f6..eaaa409636 100644 --- a/activerecord/lib/active_record/relation/calculations.rb +++ b/activerecord/lib/active_record/relation/calculations.rb @@ -19,15 +19,15 @@ module ActiveRecord # # Person.group(:city).count # # => { 'Rome' => 5, 'Paris' => 3 } - # - # If +count+ is used with +group+ for multiple columns, it returns a Hash whose - # keys are an array containing the individual values of each column and the value + # + # If +count+ is used with +group+ for multiple columns, it returns a Hash whose + # keys are an array containing the individual values of each column and the value # of each key would be the +count+. - # + # # Article.group(:status, :category).count - # # => {["draft", "business"]=>10, ["draft", "technology"]=>4, + # # => {["draft", "business"]=>10, ["draft", "technology"]=>4, # ["published", "business"]=>0, ["published", "technology"]=>2} - # + # # If +count+ is used with +select+, it will count the selected columns: # # Person.select(:age).count @@ -274,7 +274,7 @@ module ActiveRecord group_attrs = group_values if group_attrs.first.respond_to?(:to_sym) - association = @klass._reflect_on_association(group_attrs.first.to_sym) + association = @klass._reflect_on_association(group_attrs.first) associated = group_attrs.size == 1 && association && association.belongs_to? # only count belongs_to associations group_fields = Array(associated ? association.foreign_key : group_attrs) else diff --git a/activerecord/lib/active_record/relation/finder_methods.rb b/activerecord/lib/active_record/relation/finder_methods.rb index 0c9c761f97..ed56369f86 100644 --- a/activerecord/lib/active_record/relation/finder_methods.rb +++ b/activerecord/lib/active_record/relation/finder_methods.rb @@ -103,7 +103,7 @@ module ActiveRecord # Same as +take+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. Note that <tt>take!</tt> accepts no arguments. def take! - take or raise RecordNotFound + take or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the first record (or first N records if a parameter is supplied). @@ -138,7 +138,7 @@ module ActiveRecord # Same as +first+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. Note that <tt>first!</tt> accepts no arguments. def first! - first or raise RecordNotFound + first or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the last record (or last N records if a parameter is supplied). @@ -171,7 +171,7 @@ module ActiveRecord # Same as +last+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. Note that <tt>last!</tt> accepts no arguments. def last! - last or raise RecordNotFound + last or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the second record. @@ -187,7 +187,7 @@ module ActiveRecord # Same as +second+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. def second! - second or raise RecordNotFound + second or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the third record. @@ -203,7 +203,7 @@ module ActiveRecord # Same as +third+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. def third! - third or raise RecordNotFound + third or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the fourth record. @@ -219,7 +219,7 @@ module ActiveRecord # Same as +fourth+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. def fourth! - fourth or raise RecordNotFound + fourth or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the fifth record. @@ -235,7 +235,7 @@ module ActiveRecord # Same as +fifth+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. def fifth! - fifth or raise RecordNotFound + fifth or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Find the forty-second record. Also known as accessing "the reddit". @@ -251,7 +251,7 @@ module ActiveRecord # Same as +forty_two+ but raises <tt>ActiveRecord::RecordNotFound</tt> if no record # is found. def forty_two! - forty_two or raise RecordNotFound + forty_two or raise RecordNotFound.new("Couldn't find #{@klass.name} with [#{arel.where_sql}]") end # Returns +true+ if a record exists in the table that matches the +id+ or @@ -304,7 +304,7 @@ module ActiveRecord end end - connection.select_value(relation, "#{name} Exists", relation.bind_values) ? true : false + connection.select_value(relation, "#{name} Exists", relation.arel.bind_values + relation.bind_values) ? true : false end # This method is called whenever no records are found with either a single @@ -401,8 +401,9 @@ module ActiveRecord "#{quoted_table_name}.#{quoted_primary_key}", relation.order_values) relation = relation.except(:select).select(values).distinct! + arel = relation.arel - id_rows = @klass.connection.select_all(relation.arel, 'SQL', relation.bind_values) + id_rows = @klass.connection.select_all(arel, 'SQL', arel.bind_values + relation.bind_values) id_rows.map {|row| row[primary_key]} end diff --git a/activerecord/lib/active_record/relation/predicate_builder.rb b/activerecord/lib/active_record/relation/predicate_builder.rb index eff5c8f09c..3df0df40ee 100644 --- a/activerecord/lib/active_record/relation/predicate_builder.rb +++ b/activerecord/lib/active_record/relation/predicate_builder.rb @@ -26,7 +26,7 @@ module ActiveRecord queries << '1=0' else table = Arel::Table.new(column, default_table.engine) - association = klass._reflect_on_association(column.to_sym) + association = klass._reflect_on_association(column) value.each do |k, v| queries.concat expand(association && association.klass, table, k, v) @@ -55,7 +55,7 @@ module ActiveRecord # # For polymorphic relationships, find the foreign key and type: # PriceEstimate.where(estimate_of: treasure) - if klass && reflection = klass._reflect_on_association(column.to_sym) + if klass && reflection = klass._reflect_on_association(column) if reflection.polymorphic? && base_class = polymorphic_base_class_from_value(value) queries << build(table[reflection.foreign_type], base_class) 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 index 78dba8be06..b8d9240bf8 100644 --- a/activerecord/lib/active_record/relation/predicate_builder/array_handler.rb +++ b/activerecord/lib/active_record/relation/predicate_builder/array_handler.rb @@ -2,12 +2,20 @@ module ActiveRecord class PredicateBuilder class ArrayHandler # :nodoc: def call(attribute, value) - return attribute.in([]) if value.empty? - values = value.map { |x| x.is_a?(Base) ? x.id : x } - ranges, values = values.partition { |v| v.is_a?(Range) } nils, values = values.partition(&:nil?) + if values.any? { |val| val.is_a?(Array) } + ActiveSupport::Deprecation.warn "Passing a nested array to Active Record " \ + "finder methods is deprecated and will be removed. Flatten your array " \ + "before using it for 'IN' conditions." + values = values.flatten + end + + return attribute.in([]) if values.empty? && nils.empty? + + ranges, values = values.partition { |v| v.is_a?(Range) } + values_predicate = case values.length when 0 then NullPredicate @@ -20,7 +28,7 @@ module ActiveRecord end array_predicates = ranges.map { |range| attribute.in(range) } - array_predicates << values_predicate + array_predicates.unshift(values_predicate) array_predicates.inject { |composite, predicate| composite.or(predicate) } end diff --git a/activerecord/lib/active_record/relation/query_methods.rb b/activerecord/lib/active_record/relation/query_methods.rb index 1262b2c291..bbddd28ccc 100644 --- a/activerecord/lib/active_record/relation/query_methods.rb +++ b/activerecord/lib/active_record/relation/query_methods.rb @@ -1,9 +1,12 @@ require 'active_support/core_ext/array/wrap' +require 'active_model/forbidden_attributes_protection' module ActiveRecord module QueryMethods extend ActiveSupport::Concern + include ActiveModel::ForbiddenAttributesProtection + # WhereChain objects act as placeholder for queries in which #where does not have any parameter. # In this case, #where must be chained with #not to return a new relation. class WhereChain @@ -91,10 +94,8 @@ module ActiveRecord def check_cached_relation # :nodoc: if defined?(@arel) && @arel @arel = nil - ActiveSupport::Deprecation.warn <<-WARNING -Modifying already cached Relation. The cache will be reset. -Use a cloned Relation to prevent this warning. -WARNING + ActiveSupport::Deprecation.warn "Modifying already cached Relation. The " \ + "cache will be reset. Use a cloned Relation to prevent this warning." end end @@ -574,7 +575,10 @@ WARNING end def where!(opts, *rest) # :nodoc: - references!(PredicateBuilder.references(opts)) if Hash === opts + if Hash === opts + opts = sanitize_forbidden_attributes(opts) + references!(PredicateBuilder.references(opts)) + end self.where_values += build_where(opts, rest) self @@ -683,11 +687,11 @@ WARNING # end # def none - extending(NullRelation) + where("1=0").extending!(NullRelation) end def none! # :nodoc: - extending!(NullRelation) + where!("1=0").extending!(NullRelation) end # Sets readonly attributes for the returned relation. If value is @@ -723,7 +727,13 @@ WARNING end def create_with!(value) # :nodoc: - self.create_with_value = value ? create_with_value.merge(value) : {} + if value + value = sanitize_forbidden_attributes(value) + self.create_with_value = create_with_value.merge(value) + else + self.create_with_value = {} + end + self end @@ -869,12 +879,10 @@ WARNING arel.lock(lock_value) if lock_value # Reorder bind indexes if joins produced bind values - if arel.bind_values.any? - bvs = arel.bind_values + bind_values - arel.ast.grep(Arel::Nodes::BindParam).each_with_index do |bp, i| - column = bvs[i].first - bp.replace connection.substitute_at(column, i) - end + bvs = arel.bind_values + bind_values + arel.ast.grep(Arel::Nodes::BindParam).each_with_index do |bp, i| + column = bvs[i].first + bp.replace connection.substitute_at(column, i) end arel @@ -952,9 +960,7 @@ WARNING self.bind_values += bind_values attributes = @klass.send(:expand_hash_conditions_for_aggregates, tmp_opts) - attributes.values.grep(ActiveRecord::Relation) do |rel| - self.bind_values += rel.bind_values - end + add_relations_to_bind_values(attributes) PredicateBuilder.build_from_hash(klass, attributes, table) else @@ -1137,5 +1143,19 @@ WARNING raise ArgumentError, "The method .#{method_name}() must contain arguments." end end + + # This function is recursive just for better readablity. + # #where argument doesn't support more than one level nested hash in real world. + def add_relations_to_bind_values(attributes) + if attributes.is_a?(Hash) + attributes.each_value do |value| + if value.is_a?(ActiveRecord::Relation) + self.bind_values += value.bind_values + else + add_relations_to_bind_values(value) + end + end + end + end end end diff --git a/activerecord/lib/active_record/schema_dumper.rb b/activerecord/lib/active_record/schema_dumper.rb index fae6427ea1..82c5ca291c 100644 --- a/activerecord/lib/active_record/schema_dumper.rb +++ b/activerecord/lib/active_record/schema_dumper.rb @@ -100,7 +100,7 @@ HEADER # dump foreign keys at the end to make sure all dependent tables exist. if @connection.supports_foreign_keys? sorted_tables.each do |tbl| - foreign_keys(tbl, stream) + foreign_keys(tbl, stream) unless ignored?(tbl) end end end @@ -111,12 +111,7 @@ HEADER tbl = StringIO.new # first dump primary key column - if @connection.respond_to?(:pk_and_sequence_for) - pk, _ = @connection.pk_and_sequence_for(table) - end - if !pk && @connection.respond_to?(:primary_key) - pk = @connection.primary_key(table) - end + pk = @connection.primary_key(table) tbl.print " create_table #{remove_prefix_and_suffix(table).inspect}" pkcol = columns.detect { |c| c.name == pk } @@ -188,25 +183,22 @@ 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), + "add_index #{remove_prefix_and_suffix(index.table).inspect}", index.columns.inspect, - ('name: ' + index.name.inspect), + "name: #{index.name.inspect}", ] statement_parts << 'unique: true' if index.unique index_lengths = (index.lengths || []).compact - statement_parts << ('length: ' + Hash[index.columns.zip(index.lengths)].inspect) unless index_lengths.empty? - - index_orders = (index.orders || {}) - statement_parts << ('order: ' + index.orders.inspect) unless index_orders.empty? + statement_parts << "length: #{Hash[index.columns.zip(index.lengths)].inspect}" if index_lengths.any? - statement_parts << ('where: ' + index.where.inspect) if index.where + index_orders = index.orders || {} + statement_parts << "order: #{index.orders.inspect}" if index_orders.any? + statement_parts << "where: #{index.where.inspect}" if index.where + statement_parts << "using: #{index.using.inspect}" if index.using + statement_parts << "type: #{index.type.inspect}" if index.type - 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") @@ -218,26 +210,26 @@ HEADER if (foreign_keys = @connection.foreign_keys(table)).any? add_foreign_key_statements = foreign_keys.map do |foreign_key| parts = [ - 'add_foreign_key ' + remove_prefix_and_suffix(foreign_key.from_table).inspect, - remove_prefix_and_suffix(foreign_key.to_table).inspect, - ] + "add_foreign_key #{remove_prefix_and_suffix(foreign_key.from_table).inspect}", + remove_prefix_and_suffix(foreign_key.to_table).inspect, + ] if foreign_key.column != @connection.foreign_key_column_for(foreign_key.to_table) - parts << ('column: ' + foreign_key.column.inspect) + parts << "column: #{foreign_key.column.inspect}" end if foreign_key.custom_primary_key? - parts << ('primary_key: ' + foreign_key.primary_key.inspect) + parts << "primary_key: #{foreign_key.primary_key.inspect}" end if foreign_key.name !~ /^fk_rails_[0-9a-f]{10}$/ - parts << ('name: ' + foreign_key.name.inspect) + parts << "name: #{foreign_key.name.inspect}" end - parts << ('on_update: ' + foreign_key.on_update.inspect) if foreign_key.on_update - parts << ('on_delete: ' + foreign_key.on_delete.inspect) if foreign_key.on_delete + parts << "on_update: #{foreign_key.on_update.inspect}" if foreign_key.on_update + parts << "on_delete: #{foreign_key.on_delete.inspect}" if foreign_key.on_delete - ' ' + parts.join(', ') + " #{parts.join(', ')}" end stream.puts add_foreign_key_statements.sort.join("\n") diff --git a/activerecord/lib/active_record/tasks/database_tasks.rb b/activerecord/lib/active_record/tasks/database_tasks.rb index 72e0cf3723..f9b54139d5 100644 --- a/activerecord/lib/active_record/tasks/database_tasks.rb +++ b/activerecord/lib/active_record/tasks/database_tasks.rb @@ -131,10 +131,12 @@ module ActiveRecord verbose = ENV["VERBOSE"] ? ENV["VERBOSE"] == "true" : true version = ENV["VERSION"] ? ENV["VERSION"].to_i : nil scope = ENV['SCOPE'] - Migration.verbose = verbose + verbose_was, Migration.verbose = Migration.verbose, verbose Migrator.migrate(Migrator.migrations_paths, version) do |migration| scope.blank? || scope == migration.scope end + ensure + Migration.verbose = verbose_was end def charset_current(environment = env) @@ -169,6 +171,7 @@ module ActiveRecord each_current_configuration(environment) { |configuration| purge configuration } + ActiveRecord::Base.establish_connection(environment.to_sym) end def structure_dump(*arguments) @@ -184,20 +187,40 @@ module ActiveRecord end def load_schema(format = ActiveRecord::Base.schema_format, file = nil) + ActiveSupport::Deprecation.warn \ + "This method will act on a specific connection in the future. " \ + "To act on the current connection, use `load_schema_current` instead." + + load_schema_current(format, file) + end + + # This method is the successor of +load_schema+. We should rename it + # after +load_schema+ went through a deprecation cycle. (Rails > 4.2) + def load_schema_for(configuration, format = ActiveRecord::Base.schema_format, file = nil) # :nodoc: case format when :ruby file ||= File.join(db_dir, "schema.rb") check_schema_file(file) + purge(configuration) + ActiveRecord::Base.establish_connection(configuration) load(file) when :sql file ||= File.join(db_dir, "structure.sql") check_schema_file(file) - structure_load(current_config, file) + purge(configuration) + structure_load(configuration, file) else raise ArgumentError, "unknown format #{format.inspect}" end end + def load_schema_current(format = ActiveRecord::Base.schema_format, file = nil, environment = env) + each_current_configuration(environment) { |configuration| + load_schema_for configuration, format, file + } + ActiveRecord::Base.establish_connection(environment.to_sym) + end + def check_schema_file(filename) unless File.exist?(filename) message = %{#{filename} doesn't exist yet. Run `rake db:migrate` to create it, then try again.} diff --git a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb index 3d02ee07d0..ce1de4b76e 100644 --- a/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb +++ b/activerecord/lib/active_record/tasks/postgresql_database_tasks.rb @@ -54,7 +54,7 @@ module ActiveRecord 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) - File.open(filename, "a") { |f| f << "SET search_path TO #{ActiveRecord::Base.connection.schema_search_path};\n\n" } + File.open(filename, "a") { |f| f << "SET search_path TO #{connection.schema_search_path};\n\n" } end def structure_load(filename) diff --git a/activerecord/lib/active_record/tasks/sqlite_database_tasks.rb b/activerecord/lib/active_record/tasks/sqlite_database_tasks.rb index 5688931db2..9ab64d0325 100644 --- a/activerecord/lib/active_record/tasks/sqlite_database_tasks.rb +++ b/activerecord/lib/active_record/tasks/sqlite_database_tasks.rb @@ -21,7 +21,11 @@ module ActiveRecord FileUtils.rm(file) if File.exist?(file) end - alias :purge :drop + + def purge + drop + create + end def charset connection.encoding diff --git a/activerecord/lib/active_record/timestamp.rb b/activerecord/lib/active_record/timestamp.rb index ddf3e1804c..936a18d99a 100644 --- a/activerecord/lib/active_record/timestamp.rb +++ b/activerecord/lib/active_record/timestamp.rb @@ -47,8 +47,9 @@ module ActiveRecord current_time = current_time_from_proper_timezone all_timestamp_attributes.each do |column| - if respond_to?(column) && respond_to?("#{column}=") && self.send(column).nil? - write_attribute(column.to_s, current_time) + column = column.to_s + if has_attribute?(column) && !attribute_present?(column) + write_attribute(column, current_time) end end end @@ -113,7 +114,7 @@ module ActiveRecord def clear_timestamp_attributes all_timestamp_attributes_in_model.each do |attribute_name| self[attribute_name] = nil - changed_attributes.delete(attribute_name) + clear_attribute_changes([attribute_name]) end end end diff --git a/activerecord/lib/active_record/transactions.rb b/activerecord/lib/active_record/transactions.rb index 7e4dc4c895..e53297d0ab 100644 --- a/activerecord/lib/active_record/transactions.rb +++ b/activerecord/lib/active_record/transactions.rb @@ -3,11 +3,23 @@ module ActiveRecord module Transactions extend ActiveSupport::Concern ACTIONS = [:create, :destroy, :update] + CALLBACK_WARN_MESSAGE = "Currently, Active Record suppresses errors raised " \ + "within `after_rollback`/`after_commit` callbacks and only print them to " \ + "the logs. In the next version, these errors will no longer be suppressed. " \ + "Instead, the errors will propagate normally just like in other Active " \ + "Record callbacks.\n" \ + "\n" \ + "You can opt into the new behavior and remove this warning by setting:\n" \ + "\n" \ + " config.active_record.raise_in_transactional_callbacks = true" included do define_callbacks :commit, :rollback, terminator: ->(_, result) { result == false }, scope: [:kind, :name] + + mattr_accessor :raise_in_transactional_callbacks, instance_writer: false + self.raise_in_transactional_callbacks = false end # = Active Record Transactions @@ -223,6 +235,9 @@ module ActiveRecord def after_commit(*args, &block) set_options_for_callbacks!(args) set_callback(:commit, :after, *args, &block) + unless ActiveRecord::Base.raise_in_transactional_callbacks + ActiveSupport::Deprecation.warn(CALLBACK_WARN_MESSAGE) + end end # This callback is called after a create, update, or destroy are rolled back. @@ -231,6 +246,9 @@ module ActiveRecord def after_rollback(*args, &block) set_options_for_callbacks!(args) set_callback(:rollback, :after, *args, &block) + unless ActiveRecord::Base.raise_in_transactional_callbacks + ActiveSupport::Deprecation.warn(CALLBACK_WARN_MESSAGE) + end end private @@ -290,16 +308,16 @@ module ActiveRecord # # Ensure that it is not called if the object was never persisted (failed create), # but call it after the commit of a destroyed object. - def committed! #:nodoc: - run_callbacks :commit if destroyed? || persisted? + def committed!(should_run_callbacks = true) #:nodoc: + run_commit_callbacks if should_run_callbacks && destroyed? || persisted? ensure force_clear_transaction_record_state end # Call the +after_rollback+ callbacks. The +force_restore_state+ argument indicates if the record # state should be rolled back to the beginning or just to the last savepoint. - def rolledback!(force_restore_state = false) #:nodoc: - run_callbacks :rollback + def rolledback!(force_restore_state = false, should_run_callbacks = true) #:nodoc: + run_rollback_callbacks if should_run_callbacks ensure restore_transaction_record_state(force_restore_state) clear_transaction_record_state diff --git a/activerecord/lib/active_record/type.rb b/activerecord/lib/active_record/type.rb index f1384e0bb2..e3d6c5957e 100644 --- a/activerecord/lib/active_record/type.rb +++ b/activerecord/lib/active_record/type.rb @@ -1,3 +1,4 @@ +require 'active_record/type/decorator' require 'active_record/type/mutable' require 'active_record/type/numeric' require 'active_record/type/time_value' diff --git a/activerecord/lib/active_record/type/binary.rb b/activerecord/lib/active_record/type/binary.rb index d29ff4e494..005a48ef0d 100644 --- a/activerecord/lib/active_record/type/binary.rb +++ b/activerecord/lib/active_record/type/binary.rb @@ -22,6 +22,11 @@ module ActiveRecord Data.new(super) end + def changed_in_place?(raw_old_value, value) + old_value = type_cast_from_database(raw_old_value) + old_value != value + end + class Data # :nodoc: def initialize(value) @value = value.to_s @@ -30,10 +35,15 @@ module ActiveRecord def to_s @value end + alias_method :to_str, :to_s def hex @value.unpack('H*')[0] end + + def ==(other) + other == to_s || super + end end end end diff --git a/activerecord/lib/active_record/type/decorator.rb b/activerecord/lib/active_record/type/decorator.rb new file mode 100644 index 0000000000..9fce38ea44 --- /dev/null +++ b/activerecord/lib/active_record/type/decorator.rb @@ -0,0 +1,14 @@ +module ActiveRecord + module Type + module Decorator # :nodoc: + def init_with(coder) + @subtype = coder['subtype'] + __setobj__(@subtype) + end + + def encode_with(coder) + coder['subtype'] = __getobj__ + end + end + end +end diff --git a/activerecord/lib/active_record/type/serialized.rb b/activerecord/lib/active_record/type/serialized.rb index abeea769c4..17004b3593 100644 --- a/activerecord/lib/active_record/type/serialized.rb +++ b/activerecord/lib/active_record/type/serialized.rb @@ -2,6 +2,7 @@ module ActiveRecord module Type class Serialized < SimpleDelegator # :nodoc: include Mutable + include Decorator attr_reader :subtype, :coder @@ -26,19 +27,23 @@ module ActiveRecord end end + def changed_in_place?(raw_old_value, value) + return false if value.nil? + subtype.changed_in_place?(raw_old_value, coder.dump(value)) + end + def accessor ActiveRecord::Store::IndifferentHashAccessor end def init_with(coder) - @subtype = coder['subtype'] @coder = coder['coder'] - __setobj__(@subtype) + super end def encode_with(coder) - coder['subtype'] = @subtype coder['coder'] = @coder + super end private diff --git a/activerecord/lib/active_record/type/value.rb b/activerecord/lib/active_record/type/value.rb index e0a783fb45..9456a4a56c 100644 --- a/activerecord/lib/active_record/type/value.rb +++ b/activerecord/lib/active_record/type/value.rb @@ -69,13 +69,20 @@ module ActiveRecord end # Determines whether the mutable value has been modified since it was - # read. Returns +false+ by default. This method should not need to be - # overriden directly. Types which return a mutable value should include + # read. Returns +false+ by default. This method should not be overridden + # directly. Types which return a mutable value should include # +Type::Mutable+, which will define this method. def changed_in_place?(*) false end + def ==(other) + self.class == other.class && + precision == other.precision && + scale == other.scale && + limit == other.limit + end + private def type_cast(value) 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 d3c853cfea..7a3c6f5e95 100644 --- a/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb +++ b/activerecord/lib/rails/generators/active_record/migration/migration_generator.rb @@ -55,7 +55,7 @@ module ActiveRecord def attributes_with_index attributes.select { |a| !a.reference? && a.has_index? } end - + def validate_file_name! unless file_name =~ /^[_a-z0-9]+$/ raise IllegalMigrationNameError.new(file_name) diff --git a/activerecord/lib/rails/generators/active_record/migration/templates/create_table_migration.rb b/activerecord/lib/rails/generators/active_record/migration/templates/create_table_migration.rb index fd94a2d038..f7bf6987c4 100644 --- a/activerecord/lib/rails/generators/active_record/migration/templates/create_table_migration.rb +++ b/activerecord/lib/rails/generators/active_record/migration/templates/create_table_migration.rb @@ -9,7 +9,7 @@ class <%= migration_class_name %> < ActiveRecord::Migration <% end -%> <% end -%> <% if options[:timestamps] %> - t.timestamps + t.timestamps null: false <% end -%> end <% attributes_with_index.each do |attribute| -%> diff --git a/activerecord/lib/rails/generators/active_record/model/templates/model.rb b/activerecord/lib/rails/generators/active_record/model/templates/model.rb index 808598699b..539d969fce 100644 --- a/activerecord/lib/rails/generators/active_record/model/templates/model.rb +++ b/activerecord/lib/rails/generators/active_record/model/templates/model.rb @@ -1,7 +1,7 @@ <% module_namespacing do -%> class <%= class_name %> < <%= parent_class_name.classify %> <% attributes.select(&:reference?).each do |attribute| -%> - belongs_to :<%= attribute.name %><%= ', polymorphic: true' if attribute.polymorphic? %> + belongs_to :<%= attribute.name %><%= ', polymorphic: true' if attribute.polymorphic? %><%= ', required: true' if attribute.required? %> <% end -%> <% if attributes.any?(&:password_digest?) -%> has_secure_password |