A simple gem to filter, normalize and sanitize your parameters.
Add this line to your application's Gemfile:
gem 'params_modifier'
And then execute:
$ bundle
Or install it yourself as:
$ gem install params_modifier
Create a param filter class and use parameter
method, which requires 2 attributes: parameter name and block, which returns new value for this parameters.
# app/param_filters/user_params_filter.rb
class UserParamsFilter < ParamsModifier::Base
parameter(:email) { |value| value.downcase }
end
Then call filter method on ActionController::Parameters
and pass your filter class to it.
# app/controllers/users_controller.rb
def user_params
params.require(:user).permit(:name, :email).filter(UserParamsFilter)
end
After checking out the repo, run bin/setup
to install dependencies. Then, run rake spec
to run the tests. You can also run bin/console
for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run bundle exec rake install
. To release a new version, update the version number in version.rb
, and then run bundle exec rake release
, which will create a git tag for the version, push git commits and tags, and push the .gem
file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/thepry/params_modifier. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.
The gem is available as open source under the terms of the MIT License.