Stash work on returning Scope::Relationship as a models relationship.

app/managed_object.rb

@@ -35,7 +35,7 @@ def inherited(klass)
 
       def entityDescription
         @entityDescription ||= EntityDescription.new.tap do |ed|
-          ed.name = ed.managedObjectClassName = self.name
+          ed.name = ed.managedObjectClassName = name
         end
       end
 
@@ -86,13 +86,16 @@ def method_missing(method, *args, &block)
       end
     end
 
+    def relationship(name)
+      Scope::Relationship.alloc.initWithTarget(send(name), relationshipName:name, owner:self, ownerClass:self.class.entityDescription.klass)
+    end
+
     def writeAttribute(key, value)
       key = key.to_s
       willChangeValueForKey(key)
       setPrimitiveValue(value, forKey:key)
       didChangeValueForKey(key)
     end
-
   end
 
 end

spec/managed_object_spec.rb

@@ -48,6 +48,18 @@ module MotionData
         Author.edgars.target.should == Author
         Author.edgars.predicate.predicateFormat.should == 'name == "edgar"'
       end
+
+      it "returns a Scope::Relationship instead of the normal Core Data set" do
+        author = Author.new
+        author.relationship(:articles).should.be.instance_of Scope::Relationship
+        author.relationship(:articles).owner.should == author
+        author.relationship(:articles).ownerClass.should == Author
+        author.relationship(:articles).to_a.should == []
+
+        article1 = author.relationship(:articles).new(:title => 'article1')
+        article2 = author.relationship(:articles).new(:title => 'article2')
+        author.relationship(:articles).withTitles.to_a.should == [article1, article2]
+      end
     end
   end