This gem is a dependency of Rails 4.0 to provide deprecated finder functionality.
It will be removed as a dependency in Rails 4.1, but users can manually include it in their Gemfile and it will continue to be maintained until Rails 5.
gem 'activerecord-deprecated_finders', require: 'active_record/deprecated_finders'This gem is used to extract and deprecate old-style finder option hashes in Active Record:
Post.find(:all, conditions: { published_on: 2.weeks.ago }, limit: 5)as well as the following dynamic finders:
find_all_by_...find_last_by_...scoped_by_...find_or_initialize_by_...find_or_create_by_...Note that find(primary_key), find_by..., and find_by...! are not
deprecated.
To avoid reliance on this gem, you'll need to migrate your finder usage.
To migrate dynamic finders to Rails 4.1+:
find_all_by_... should become where(...).find_last_by_... should become where(...).last.scoped_by_... should become where(...).find_or_initialize_by_... should become find_or_initialize_by(...).find_or_create_by_... should become find_or_create_by(...).To migrate old-style finder option hashes and for additional information, please refer to:
[findermethods]: http://api.rubyonrails.org/classes/ActiveRecord/FinderMethods.html [relation]: http://api.rubyonrails.org/classes/ActiveRecord/Relation.html [querymethods]: http://api.rubyonrails.org/classes/ActiveRecord/QueryMethods.html [stableguide]: http://guides.rubyonrails.org/upgrading_ruby_on_rails.html [edgeguide]: http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html