ActiveRecord 2.3: Nested attribute changes disappear

Updated . Posted . Visible to the public.

There is a bug in ActiveRecord 2.3.x that leads to changes in nested forms getting lost.

class Project < ActiveRecord::Base
  has_many :tasks
  accepts_nested_attributes_for :tasks
end

If you access project.tasks after setting tasks through the nested attribute logic, all tasks will be reloaded and all changes will be lost. This usually happens

  • in validations
  • in callbacks
  • after validation errors, when rendering the view again

The attached initializer fixes those issues.

nested_attributes_fix.rb
Tobias Kraze
makandra.de
Say thanks3
Last edit
Attachments
nested_attributes_fix.rb
Keywords
parent, children, association
License
Source code in this card is licensed under the MIT License.

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Posted by Tobias Kraze to makandra dev (2013-02-11 17:06)
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