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19b168e611
Since after 87d1aba3c `dependent: :destroy` callbacks on has_one
assocations run *after* destroy, it is possible that a nullification is
attempted on an already destroyed target:
class Car < ActiveRecord::Base
has_one :engine, dependent: :nullify
end
class Engine < ActiveRecord::Base
belongs_to :car, dependent: :destroy
end
> car = Car.create!
> engine = Engine.create!(car: car)
> engine.destroy! # => ActiveRecord::ActiveRecordError: cannot update a
> destroyed record
In the above case, `engine.destroy!` deletes `engine` and *then* triggers the
deletion of `car`, which in turn triggers a nullification of `engine.car_id`.
However, `engine` is already destroyed at that point.
Fixes #21223.
39 lines
1.2 KiB
Ruby
39 lines
1.2 KiB
Ruby
class Ship < ActiveRecord::Base
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self.record_timestamps = false
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belongs_to :pirate
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belongs_to :update_only_pirate, :class_name => 'Pirate'
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belongs_to :developer, dependent: :destroy
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has_many :parts, :class_name => 'ShipPart'
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has_many :treasures
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accepts_nested_attributes_for :parts, :allow_destroy => true
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accepts_nested_attributes_for :pirate, :allow_destroy => true, :reject_if => proc(&:empty?)
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accepts_nested_attributes_for :update_only_pirate, :update_only => true
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validates_presence_of :name
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attr_accessor :cancel_save_from_callback
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before_save :cancel_save_callback_method, :if => :cancel_save_from_callback
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def cancel_save_callback_method
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throw(:abort)
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end
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end
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class ShipWithoutNestedAttributes < ActiveRecord::Base
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self.table_name = "ships"
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has_many :prisoners, inverse_of: :ship, foreign_key: :ship_id
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has_many :parts, class_name: "ShipPart", foreign_key: :ship_id
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validates :name, presence: true
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end
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class Prisoner < ActiveRecord::Base
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belongs_to :ship, autosave: true, class_name: "ShipWithoutNestedAttributes", inverse_of: :prisoners
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end
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class FamousShip < ActiveRecord::Base
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self.table_name = 'ships'
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belongs_to :famous_pirate
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validates_presence_of :name, on: :conference
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end
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