Fix `CollectionProxy#concat` to return self by alias it to `#<<`
Formerly it was returning arguments (`records` array).
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@ -109,9 +109,8 @@ module ActiveRecord
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end
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end
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# Add +records+ to this association. Returns +self+ so method calls may
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# be chained. Since << flattens its argument list and inserts each record,
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# +push+ and +concat+ behave identically.
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# Add +records+ to this association. Since +<<+ flattens its argument list
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# and inserts each record, +push+ and +concat+ behave identically.
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def concat(*records)
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records = records.flatten
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if owner.new_record?
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@ -366,34 +366,6 @@ module ActiveRecord
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@association.create!(attributes, &block)
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end
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# Add one or more records to the collection by setting their foreign keys
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# to the association's primary key. Since #<< flattens its argument list and
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# inserts each record, +push+ and #concat behave identically. Returns +self+
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# so method calls may be chained.
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#
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# class Person < ActiveRecord::Base
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# has_many :pets
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# end
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#
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# person.pets.size # => 0
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# person.pets.concat(Pet.new(name: 'Fancy-Fancy'))
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# person.pets.concat(Pet.new(name: 'Spook'), Pet.new(name: 'Choo-Choo'))
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# person.pets.size # => 3
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#
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# person.id # => 1
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# person.pets
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# # => [
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# # #<Pet id: 1, name: "Fancy-Fancy", person_id: 1>,
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# # #<Pet id: 2, name: "Spook", person_id: 1>,
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# # #<Pet id: 3, name: "Choo-Choo", person_id: 1>
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# # ]
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#
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# person.pets.concat([Pet.new(name: 'Brain'), Pet.new(name: 'Benny')])
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# person.pets.size # => 5
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def concat(*records)
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@association.concat(*records)
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end
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# Replaces this collection with +other_array+. This will perform a diff
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# and delete/add only records that have changed.
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#
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@ -1033,8 +1005,9 @@ module ActiveRecord
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end
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# Adds one or more +records+ to the collection by setting their foreign keys
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# to the association's primary key. Returns +self+, so several appends may be
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# chained together.
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# to the association's primary key. Since +<<+ flattens its argument list and
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# inserts each record, +push+ and +concat+ behave identically. Returns +self+
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# so several appends may be chained together.
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#
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# class Person < ActiveRecord::Base
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# has_many :pets
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@ -1057,6 +1030,7 @@ module ActiveRecord
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end
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alias_method :push, :<<
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alias_method :append, :<<
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alias_method :concat, :<<
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def prepend(*args)
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raise NoMethodError, "prepend on association is not defined. Please use <<, push or append"
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@ -996,9 +996,10 @@ class HasManyAssociationsTest < ActiveRecord::TestCase
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assert_predicate companies(:first_firm).clients_of_firm, :loaded?
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companies(:first_firm).clients_of_firm.concat([Client.new("name" => "Natural Company"), Client.new("name" => "Apple")])
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result = companies(:first_firm).clients_of_firm.concat([Client.new("name" => "Natural Company"), Client.new("name" => "Apple")])
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assert_equal 4, companies(:first_firm).clients_of_firm.size
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assert_equal 4, companies(:first_firm).clients_of_firm.reload.size
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assert_equal companies(:first_firm).clients_of_firm, result
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end
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def test_transactions_when_adding_to_persisted
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@ -242,9 +242,10 @@ class HasManyThroughAssociationsTest < ActiveRecord::TestCase
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def test_concat
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person = people(:david)
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post = posts(:thinking)
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post.people.concat [person]
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result = post.people.concat [person]
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assert_equal 1, post.people.size
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assert_equal 1, post.people.reload.size
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assert_equal post.people, result
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end
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def test_associate_existing_record_twice_should_add_to_target_twice
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