Fix too tight permissions; ambassadors have perm now

journals/templatetags/lookup.py

@@ -21,3 +21,11 @@ class PublicationLookup(LookupChannel):
         return u"%s (%s)<br><span class='text-muted'>by %s</span>" % (item.title,
                                                                       item.doi_string,
                                                                       item.author_list)
+
+    def check_auth(self, request):
+        """
+        Check if current user has required permissions.
+        Right now only used for draft registration invitations. May be extended in the
+        future for other purposes as well.
+        """
+        return request.user.has_perm('can_draft_registration_invitations')

submissions/templatetags/lookup.py

@@ -20,3 +20,11 @@ class SubmissionLookup(LookupChannel):
     def format_match(self, item):
         '''(HTML) Format item for displaying in the dropdown.'''
         return u"%s<br><span class='text-muted'>by %s</span>" % (item.title, item.author_list)
+
+    def check_auth(self, request):
+        """
+        Check if current user has required permissions.
+        Right now only used for draft registration invitations. May be extended in the
+        future for other purposes as well.
+        """
+        return request.user.has_perm('can_draft_registration_invitations')