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| -rw-r--r-- | guides/source/upgrading_ruby_on_rails.md | 6 |
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diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md index 79e0c6bf09..357918a73c 100644 --- a/guides/source/upgrading_ruby_on_rails.md +++ b/guides/source/upgrading_ruby_on_rails.md @@ -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. |