port fix for namespaced params from 2.0 back to 1.6

lib/cancan/controller_resource.rb

@@ -82,10 +82,7 @@ module CanCan
     end
 
     def build_resource
-      params = @options[:class] \
+      resource = resource_base.new(resource_params || {})
-        ? @params[@options[:class].to_s.underscore.gsub('/', '_')] \
-        : @params[name] || {}
-      resource = resource_base.new(params)
       resource.send("#{parent_name}=", parent_resource) if @options[:singleton] && parent_resource
       initial_attributes.each do |attr_name, value|
         resource.send("#{attr_name}=", value)
@@ -95,7 +92,7 @@ module CanCan
 
     def initial_attributes
       current_ability.attributes_for(@params[:action].to_sym, resource_class).delete_if do |key, value|
-        @params[name] && @params[name].include?(key)
+        resource_params && resource_params.include?(key)
       end
     end
 
@@ -210,6 +207,14 @@ module CanCan
       @name || name_from_controller
     end
 
+    def resource_params
+      if @options[:class]
+        @params[@options[:class].to_s.underscore.gsub('/', '_')]
+      else
+        @params[namespaced_name.to_s.underscore.gsub("/", "_")]
+      end
+    end
+
     def namespaced_name
       @name || @params[:controller].sub("Controller", "").singularize.camelize.constantize
     rescue NameError

spec/cancan/controller_resource_spec.rb

@@ -47,6 +47,18 @@ describe CanCan::ControllerResource do
     @controller.instance_variable_get(:@project).should == project
   end
 
+  # Rails includes namespace in params, see issue #349
+  it "should create through the namespaced params" do
+    module MyEngine
+      class Project < ::Project; end
+    end
+
+    @params.merge!(:controller => "MyEngine::ProjectsController", :action => "create", :my_engine_project => {:name => "foobar"})
+    resource = CanCan::ControllerResource.new(@controller)
+    resource.load_resource
+    @controller.instance_variable_get(:@project).name.should == "foobar"
+  end
+
   it "should properly load resource for namespaced controller when using '::' for namespace" do
     project = Project.create!
     @params.merge!(:controller => "Admin::ProjectsController", :action => "show", :id => project.id)