add support for inheriting with a prefix

objrepo/record/models.py

@@ -10,7 +10,11 @@ class Record(models.Model):
         result = {}
 
         for l in self.out_links.filter(inherit=True):
+            if l.prefix is None:
                 result.update(l.link_to.all_metadata)
+            else:
+                for k,v in l.link_to.all_metadata.iteritems():
+                    result[l.prefix + ':' + k] = v
 
         result.update(self.metadata)
         return result

objrepo/record/tests.py

@@ -50,3 +50,19 @@ class RecordTests(TestCase):
 
         self.assertEqual(d['ex:llama_id'], 42)
         self.assertEqual(d['ex:another_property'], 23)
+
+    def test_metadata_inherit_with_prefix(self):
+        # these records are linked and marked to inherit, with a prefix 'p'
+        # this is interesting so you can inherit a related entity's metadata
+        # without making a mess of the namespace
+        l = Link.objects.create(
+            link_from=self.r,
+            link_to=self.q,
+            label='ex:related_to',
+            inherit=True,
+            prefix='p')
+
+        d = self.r.all_metadata
+
+        self.assertEqual(d['ex:llama_id'], 42)
+        self.assertEqual(d['p:ex:another_property'], 23)