full_url_for

# File actionpack/lib/action_dispatch/routing/url_for.rb, line 172
      def full_url_for(options = nil) # :nodoc:
        case options
        when nil
          _routes.url_for(url_options.symbolize_keys)
        when Hash, ActionController::Parameters
          route_name = options.delete :use_route
          merged_url_options = options.to_h.symbolize_keys.reverse_merge!(url_options)
          _routes.url_for(merged_url_options, route_name)
        when String
          options
        when Symbol
          HelperMethodBuilder.url.handle_string_call self, options
        when Array
          components = options.dup
          polymorphic_url(components, components.extract_options!)
        when Class
          HelperMethodBuilder.url.handle_class_call self, options
        else
          HelperMethodBuilder.url.handle_model_call self, options
        end
      end