Take Hash with options inside Array in #url_for

actionpack/CHANGELOG.md

@@ -1,3 +1,12 @@
+*   Take a hash with options inside array in #url_for
+
+    Example:
+
+        url_for [:new, :admin, :post, { param: 'value' }]
+        # => http://example.com/admin/posts/new?params=value
+
+    *Andrey Ognevsky*
+
 *   Add `session#fetch` method
 
     fetch behaves similarly to [Hash#fetch](http://www.ruby-doc.org/core-1.9.3/Hash.html#method-i-fetch),

actionpack/lib/action_dispatch/routing/url_for.rb

@@ -155,6 +155,8 @@ module ActionDispatch
           _routes.url_for(options.symbolize_keys.reverse_merge!(url_options))
         when String
           options
+        when Array
+          polymorphic_url(options, options.extract_options!)
         else
           polymorphic_url(options)
         end

actionpack/test/controller/url_for_test.rb

@@ -370,6 +370,24 @@ module AbstractController
         assert_equal("/c/a?show=false", W.new.url_for(:only_path => true, :controller => 'c', :action => 'a', :show => false))
       end
 
+      def test_url_generation_with_array_and_hash
+        with_routing do |set|
+          set.draw do
+            namespace :admin do
+              resources :posts
+            end
+          end
+
+          kls = Class.new { include set.url_helpers }
+          kls.default_url_options[:host] = 'www.basecamphq.com'
+
+          controller = kls.new
+          assert_equal("http://www.basecamphq.com/admin/posts/new?param=value",
+            controller.send(:url_for, [:new, :admin, :post, { param: 'value' }])
+          )
+        end
+      end
+
       private
         def extract_params(url)
           url.split('?', 2).last.split('&').sort

actionview/lib/action_view/routing_url_for.rb

@@ -83,6 +83,8 @@ module ActionView
         super
       when :back
         _back_url
+      when Array
+        polymorphic_path(options, options.extract_options!)
       else
         polymorphic_path(options)
       end