Sinatra::StrongParams

A really naive parameter filtering implementation for Sinatra.

Add this line to your application's Gemfile:

gem 'sinatra-strong-params', require: 'sinatra/strong-params'

And then execute:

$ bundle

Or install it yourself as:

$ gem install sinatra-strong-params

If you are using a Modular Sinatra application such as class MyApp < Sinatra::Base you must include any desired extensions explicitly within your Sinatra application:

register Sinatra::StrongParams

This gem adds two filters to Sinatra routes: allows and needs.

A way to whitelist parameters in the request scope.

get '/', allows: [:id, :action] do
  erb :index
end

allows modifies the parameters available in the request scope keeping just the allowed params.

A way to require parameters in the request scope.

get '/', needs: [:id, :action] do
  erb :index
end

needs does not modify the parameters available to the request scope but raises a RequiredParamMissing error if a needed param is missing.

Catching a missing parameter error:

error RequiredParamMissing do
  [400, env['sinatra.error'].message]
end

Wanna get super restrictive? Can do.

post '/login', needs: [:email, :password], allows: [:name] do
  # handle yo business
end

1. Fork it ( https://github.com/[my-github-username]/sinatra-strong-params/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes with tests (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request