Make .ballot_open() available on DocumentInfo instead of on Document, too.

 - Legacy-Id: 4807

Author: levkowetz

ietf/doc/models.py

@@ -127,6 +127,12 @@ def get_state_slug(self, state_type=None):
     def author_list(self):
         return ", ".join(email.address for email in self.authors.all())
 
+    # This, and several other ballot related functions here, assume that there is only one active ballot for a document at any point in time.
+    # If that assumption is violated, they will only expose the most recently created ballot
+    def ballot_open(self, ballot_type_slug):
+        e = self.latest_event(BallotDocEvent, ballot_type__slug=ballot_type_slug)
+        return e and not e.type == "closed_ballot"
+
     def active_ballot(self):
         """Returns the most recently created ballot if it isn't closed."""
         ballot = self.latest_event(BallotDocEvent, type="created_ballot")
@@ -267,12 +273,6 @@ def active_defer_event(self):
             return self.latest_event(type="changed_document", desc__startswith="State changed to <b>IESG Evaluation - Defer</b>")
         return None
 
-# This, and several other ballot related functions here, assume that there is only one active ballot for a document at any point in time.
-# If that assumption is violated, they will only expose the most recently created ballot
-    def ballot_open(self, ballot_type_slug):
-        e = self.latest_event(BallotDocEvent, ballot_type__slug=ballot_type_slug)
-        return e and not e.type == "closed_ballot"
-
     def most_recent_ietflc(self):
         """Returns the most recent IETF LastCallDocEvent for this document"""
         return self.latest_event(LastCallDocEvent,type="sent_last_call")