Update UrlWriter to support :only_path.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@5054 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

@@ -1,5 +1,7 @@
 *SVN*
 
+* Update UrlWriter to support :only_path. [Nicholas Seckar, Dave Thomas]
+
 * Fixed JavaScriptHelper#link_to_function and JavaScriptHelper#button_to_function to have the script argument be optional [DHH]. So what used to require a nil, like this:
 
     link_to("Hider", nil, :class => "hider_link") { |p| p[:something].hide }

actionpack/lib/action_controller/url_rewriter.rb

@@ -40,13 +40,18 @@ def self.included(base) #:nodoc:
     def url_for(options)
       options = self.class.default_url_options.merge(options)
       
-      raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
-      
       url = ''
-      url << (options.delete(:protocol) || 'http')
-      url << '://'
-      url << options.delete(:host)
-      url << ":#{options.delete(:port)}" if options.key?(:port)
+      unless options.delete :only_path
+        url << (options.delete(:protocol) || 'http')
+        url << '://'
+        
+        raise "Missing host to link to! Please provide :host parameter or set default_url_options[:host]" unless options[:host]
+        url << options.delete(:host)
+        url << ":#{options.delete(:port)}" if options.key?(:port)
+      else
+        # Delete the unused options to prevent their appearance in the query string
+        [:protocol, :host, :port].each { |k| options.delete k }
+      end
       url << Routing::Routes.generate(options, {})
       return url
     end

actionpack/test/controller/url_rewriter_test.rb

@@ -84,10 +84,32 @@ def test_named_route
     
     # We need to create a new class in order to install the new named route.
     kls = Class.new { include ActionController::UrlWriter }
-    assert kls.new.respond_to?(:home_url)
+    controller = kls.new
+    assert controller.respond_to?(:home_url)
     assert_equal 'http://www.basecamphq.com/home/sweet/home/again',
-      kls.new.send(:home_url, :host => 'www.basecamphq.com', :user => 'again')
+      controller.send(:home_url, :host => 'www.basecamphq.com', :user => 'again')
+      
+    assert_equal("/home/sweet/home/alabama", controller.send(:home_path, :user => 'alabama', :host => 'unused'))
   ensure
     ActionController::Routing::Routes.load!
   end
+  
+  def test_only_path
+    ActionController::Routing::Routes.draw do |map|
+      map.home '/home/sweet/home/:user'
+      map.connect ':controller/:action/:id'
+    end
+    
+    # We need to create a new class in order to install the new named route.
+    kls = Class.new { include ActionController::UrlWriter }
+    controller = kls.new
+    assert controller.respond_to?(:home_url)
+    assert_equal '/brave/new/world',
+      controller.send(:url_for, :controller => 'brave', :action => 'new', :id => 'world', :only_path => true)
+    
+    assert_equal("/home/sweet/home/alabama", controller.send(:home_url, :user => 'alabama', :host => 'unused', :only_path => true))
+  ensure
+    ActionController::Routing::Routes.load!
+  end
+  
 end