Rails routes matching query parameters

Question

Rails routes are great for matching RESTful style \'/\' separated bits of a URL, but can I match query parameters in a map.connect config. I wa

Answer 1

The following solution is based on the "Advanced Constraints" section of the "Rails Routing from the Outside In" rails guide (http://guides.rubyonrails.org/routing.html).

In your config/routes.rb file, include a recognizer class have a matches? method, e.g.:

class FruitRecognizer
  def initialize(fruit_type)
    @fruit_type = fruit_type.to_sym
  end

  def matches?(request)
    request.params.has_key?(@fruit_type)
  end
end

Then use objects from the class as routing constraints, as in:

map.connect "api/my/path", :contraints => FruitRecognizer.new(:apple), :controller => 'apples_controller', :action => 'my_action'