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Merge pull request #12015 from vipulnsward/add_dynamic_finders_to_upgrade

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Add Finder API changes to upgrading guide [ci skip]
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Steve Klabnik 2013-08-26 11:49:10 -07:00
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guides/source/upgrading_ruby_on_rails.md
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@ -172,6 +172,18 @@ this gem such as `whitelist_attributes` or `mass_assignment_sanitizer` options.
* Rails 4.0 has deprecated `ActiveRecord::Fixtures` in favor of `ActiveRecord::FixtureSet`.
* Rails 4.0 has deprecated `ActiveRecord::TestCase` in favor of `ActiveSupport::TestCase`.
* Rails 4.0 has deprecated the old-style hash based finder API. This means that
methods which previously accepted "finder options" no longer do.
* All dynamic methods except for `find_by_...` and `find_by_...!` are deprecated.
Here's how you can handle the changes:
* `find_all_by_...` becomes `where(...)`.
* `find_last_by_...` becomes `where(...).last`.
* `scoped_by_...` becomes `where(...)`.
* `find_or_initialize_by_...` becomes `find_or_initialize_by(...)`.
* `find_or_create_by_...` becomes `find_or_create_by(...)`.
### Active Resource
Rails 4.0 extracted Active Resource to its own gem. If you still need the feature you can add the [Active Resource gem](https://github.com/rails/activeresource) in your Gemfile.