Match destroyed_by_association for has_one to has_many
When a has_many association is destroyed by `dependent: destroy`, destroyed_by_association is set to the reflection, and this can be checked in callbacks. This matches that behaviour for has_one associations.
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@ -1,3 +1,9 @@
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* When a `has_one` association is destroyed by `dependent: destroy`,
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`destroyed_by_association` will now be set to the reflection, matching the
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behaviour of `has_many` associations.
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*Lisa Ugray*
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* Fix `unscoped(where: [columns])` removing the wrong bind values
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When the `where` is called on a relation after a `or`, unscoping the column of that later `where` removed
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@ -56,6 +56,7 @@ module ActiveRecord
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when :delete
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target.delete
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when :destroy
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target.destroyed_by_association = reflection
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target.destroy
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when :nullify
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target.update_columns(reflection.foreign_key => nil) if target.persisted?
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@ -78,6 +79,7 @@ module ActiveRecord
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when :delete
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target.delete
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when :destroy
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target.destroyed_by_association = reflection
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target.destroy
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else
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nullify_owner_attributes(target)
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@ -688,4 +688,38 @@ class HasOneAssociationsTest < ActiveRecord::TestCase
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SpecialAuthor.joins(book: :subscription).where.not(where_clause)
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end
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end
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class DestroyByParentBook < ActiveRecord::Base
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self.table_name = "books"
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belongs_to :author, class_name: "DestroyByParentAuthor"
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before_destroy :dont, unless: :destroyed_by_association
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def dont
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throw(:abort)
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end
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end
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class DestroyByParentAuthor < ActiveRecord::Base
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self.table_name = "authors"
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has_one :book, class_name: "DestroyByParentBook", foreign_key: "author_id", dependent: :destroy
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end
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test "destroyed_by_association set in child destroy callback on parent destroy" do
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author = DestroyByParentAuthor.create!(name: "Test")
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book = DestroyByParentBook.create!(author: author)
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author.destroy
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assert_not DestroyByParentBook.exists?(book.id)
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end
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test "destroyed_by_association set in child destroy callback on replace" do
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author = DestroyByParentAuthor.create!(name: "Test")
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book = DestroyByParentBook.create!(author: author)
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author.book = DestroyByParentBook.create!
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author.save!
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assert_not DestroyByParentBook.exists?(book.id)
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end
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end
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