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adding more finder migration information to upgrade guide [ci skip]

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Gary S. Weaver 2013-08-27 08:59:22 -04:00
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guides/source/upgrading_ruby_on_rails.md
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@ -184,6 +184,12 @@ this gem such as `whitelist_attributes` or `mass_assignment_sanitizer` options.
* `find_or_initialize_by_...` becomes `find_or_initialize_by(...)`.
* `find_or_create_by_...` becomes `find_or_create_by(...)`.
* Note that `where(...)` returns a relation, not an array like the old finders. If you require an `Array`, use `where(...).to_a`.
* These equivalent methods may not execute the same SQL as the previous implementation.
* To re-enable the old finders, you can use the [activerecord-deprecated_finders gem](https://github.com/rails/activerecord-deprecated_finders).
### 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.