The missing Rails controller class method that lets you declare your strong parameters.
Add this line to your application's Gemfile:
Or install it yourself as:
$ gem install strong_parameters_dsl
When Rails came out with Strong Parameters it just didn't feel Ruby enough. This gem is a simple workaround that will let you declaratively define your strong parameters as you would your filters.
class UsersController < ActionController::Base strong_params :user do permit :name, :email, comments_attributes: [:comment, :post_id] end # ... or ... strong_params :user, permit: [:name, :email, comments_attributes: [:comment, :post_id]] # an additional feature added is the ability to permit a key whose value is an arbitrary hash strong_params :user, any: :data # you can also mix and match any of the above approaches strong_params :user, any: :data, permit: :name do permit :more_keys, :and_stuff end def create # the named param method is created based on the argument passed # to the strong_params call User.create user_params # ... rest of code ... end end
The block passed to
strong_params is evaluated in the context of the ActionController::Parameters instance that is returned by
Or more specifically by the strongified instance returned by calling
There is an issue regarding allowing arbitrary hashes in some keys which was debated here. The solution wasn't very neat but it could be added as an instance method on the Parameters instance and then used as part of this DSL. Ideas welcome.
- Fork it
- Create your feature branch (
git checkout -b my-new-feature)
- Commit your changes (
git commit -am 'Add some feature')
- Push to the branch (
git push origin my-new-feature)
- Create new Pull Request