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Mention the removal of attr_accessible and attr_protected in the upgrading guide

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Point to the Protected Attributes gem to those who want a smoothly
upgrade path before to change to use Strong Parameters.

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Rafael Mendonça França 2013-02-24 15:03:29 -03:00
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guides/source/upgrading_ruby_on_rails.md
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@ -45,6 +45,8 @@ Rails 4.0 no longer supports loading plugins from `vendor/plugins`. You must rep
* Rails 4.0 has changed `serialized_attributes` and `attr_readonly` to class methods only. Now you shouldn't use instance methods, it's deprecated. You must change them, e.g. `self.serialized_attributes` to `self.class.serialized_attributes`.
* Rails 4.0 has removed `attr_accessible` and `attr_protected` feature in favor of Strong Parameters. You can use the [Protected Attributes gem](https://github.com/rails/protected_attributes) to a smoothly upgrade path.
### Active Model
* Rails 4.0 has changed how errors attach with the `ActiveModel::Validations::ConfirmationValidator`. Now when confirmation validations fail the error will be attached to `:#{attribute}_confirmation` instead of `attribute`.