Object.actor_link bug fix: handle actor/author objects with only id field

for #442

models.py

@@ -840,13 +840,15 @@ class Object(StringIdModel):
             # outbound; show a nice link to the user
             return g.user.user_link()
 
-        actor = {}
+        actor = None
         if self.as1:
-            actor = (util.get_first(self.as1, 'actor')
-                     or util.get_first(self.as1, 'author')
-                     or {})
-        if isinstance(actor, str):
-            return common.pretty_link(actor, attrs=attrs)
+            actor = (as1.get_object(self.as1, 'actor')
+                     or as1.get_object(self.as1, 'author'))
+
+        if not actor:
+            return ''
+        elif set(actor.keys()) == {'id'}:
+            return common.pretty_link(actor['id'], attrs=attrs)
 
         url = util.get_first(actor, 'url') or ''
         name = actor.get('displayName') or actor.get('username') or ''

templates/home.html

@@ -4,7 +4,7 @@
 {% block subtabs %}
 <div class="row">
   Subscribe:
-  <a href="{{ g.user.user_page_path('feed') }}">HTML</a>
+  <a href="{{ g.user.user_page_path('feed?format=html') }}">HTML</a>
   &middot; <a href="{{ g.user.user_page_path('feed?format=atom') }}">Atom</a>
   &middot; <a href="{{ g.user.user_page_path('feed?format=rss') }}">RSS</a>
 </div>

tests/test_models.py

@@ -385,8 +385,9 @@ class ObjectTest(TestCase):
 
     def test_actor_link(self):
         for expected, as2 in (
-                ('href="">', {}),
+                ('', {}),
                 ('href="http://foo">foo', {'actor': 'http://foo'}),
+                ('href="http://foo">foo', {'actor': {'id': 'http://foo'}}),
                 ('href="">Alice', {'actor': {'name': 'Alice'}}),
                 ('href="http://foo/">Alice', {'actor': {
                     'name': 'Alice',
@@ -404,6 +405,10 @@ class ObjectTest(TestCase):
                 obj = Object(id='x', as2=as2)
                 self.assert_multiline_in(expected, obj.actor_link())
 
+        self.assertEqual(
+            '<a class="h-card u-author" href="http://foo">foo</a>',
+            Object(id='x', our_as1={'actor': {'id': 'http://foo'}}).actor_link())
+
     def test_actor_link_user(self):
         g.user = Fake(id='fake:user', obj=Object(id='a', as2={"name": "Alice"}))
         obj = Object(id='x', source_protocol='ui', users=[g.user.key])