diff options
| -rw-r--r-- | activerecord/test/cases/associations/belongs_to_associations_test.rb | 11 | ||||
| -rw-r--r-- | guides/source/association_basics.md | 6 |
2 files changed, 8 insertions, 9 deletions
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb index a79f145e31..7c913bc78b 100644 --- a/activerecord/test/cases/associations/belongs_to_associations_test.rb +++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb @@ -619,16 +619,11 @@ class BelongsToAssociationsTest < ActiveRecord::TestCase assert_equal [author_address.id], AuthorAddress.destroyed_author_address_ids end - def test_invalid_belongs_to_dependent_option_nullify_raises_exception - assert_raise ArgumentError do + def test_belongs_to_invalid_dependent_option_raises_exception + error = assert_raise ArgumentError do Class.new(Author).belongs_to :special_author_address, :dependent => :nullify end - end - - def test_invalid_belongs_to_dependent_option_restrict_raises_exception - assert_raise ArgumentError do - Class.new(Author).belongs_to :special_author_address, :dependent => :restrict - end + assert_equal error.message, 'The :dependent option must be one of [:destroy, :delete], but is :nullify' end def test_attributes_are_being_set_when_initialized_from_belongs_to_association_with_where_clause diff --git a/guides/source/association_basics.md b/guides/source/association_basics.md index c0482f6106..9867d2dc3f 100644 --- a/guides/source/association_basics.md +++ b/guides/source/association_basics.md @@ -864,8 +864,12 @@ end Counter cache columns are added to the containing model's list of read-only attributes through `attr_readonly`. ##### `:dependent` +If you set the `:dependent` option to: -If you set the `:dependent` option to `:destroy`, then deleting this object will call the `destroy` method on the associated object to delete that object. If you set the `:dependent` option to `:delete`, then deleting this object will delete the associated object _without_ calling its `destroy` method. If you set the `:dependent` option to `:restrict`, then attempting to delete this object will result in a `ActiveRecord::DeleteRestrictionError` if there are any associated objects. +* `:destroy`, when the object is destroyed, `destroy` will be called on its +associated objects. +* `:delete`, when the object is destroyed, all its associated objects will be +deleted directly from the database without calling their `destroy` method. WARNING: You should not specify this option on a `belongs_to` association that is connected with a `has_many` association on the other class. Doing so can lead to orphaned records in your database. |