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Merge pull request #13699 from rystraum/dependent-restrict-removal

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Updated Changelog to reflect removal of :dependent => :restrict
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Rafael Mendonça França 2014-01-13 09:46:50 -08:00
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guides/source/upgrading_ruby_on_rails.md
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@ -614,6 +614,10 @@ config.active_record.mass_assignment_sanitizer = :strict
Rails 3.2 deprecates `vendor/plugins` and Rails 4.0 will remove them completely. While it's not strictly necessary as part of a Rails 3.2 upgrade, you can start replacing any plugins by extracting them to gems and adding them to your Gemfile. If you choose not to make them gems, you can move them into, say, `lib/my_plugin/*` and add an appropriate initializer in `config/initializers/my_plugin.rb`.
### Active Record
Option `:dependent => :restrict` has been removed from `belongs_to`. If you want to prevent deleting the object if there are any associated objects, you can set `:dependent => :destroy` and return `false` after checking for existence of association from any of the associated object's destroy callbacks.
Upgrading from Rails 3.0 to Rails 3.1
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