Encode ID parameter for custom methods

Author: igor-ladkin

lib/active_resource/custom_methods.rb

@@ -119,7 +119,7 @@ def delete(method_name, options = {})
 
     private
       def custom_method_element_url(method_name, options = {})
-        "#{self.class.prefix(prefix_options)}#{self.class.collection_name}/#{id}/#{method_name}#{self.class.format_extension}#{self.class.__send__(:query_string, options)}"
+        "#{self.class.prefix(prefix_options)}#{self.class.collection_name}/#{URI.encode_www_form_component(id.to_s)}/#{method_name}#{self.class.format_extension}#{self.class.__send__(:query_string, options)}"
       end
 
       def custom_method_new_element_url(method_name, options = {})

test/cases/base/custom_methods_test.rb

@@ -141,4 +141,15 @@ def test_paths_without_format
   ensure
     ActiveResource::Base.include_format_in_path = true
   end
+
+  def test_custom_element_method_identifier_encoding
+    luis = { person: { id: "luís", name: "Luís" } }.to_json
+
+    ActiveResource::HttpMock.respond_to do |mock|
+      mock.get "/people/lu%C3%ADs.json", {}, luis
+      mock.put "/people/lu%C3%ADs/deactivate.json", {}, luis, 204
+    end
+
+    assert_equal ActiveResource::Response.new(luis, 204), Person.find("luís").put(:deactivate)
+  end
 end