opening_at for establishment

apps/search_indexes/documents/establishment.py

@@ -116,6 +116,7 @@ class EstablishmentDocument(Document):
             'weekday': fields.IntegerField(attr='weekday'),
             'weekday_display': fields.KeywordField(attr='get_weekday_display'),
             'closed_at': fields.KeywordField(attr='closed_at_str'),
+            'opening_at': fields.KeywordField(attr='opening_at_str'),
         }
     ))
     address = fields.ObjectField(

apps/timetable/models.py

@@ -39,6 +39,10 @@ class Timetable(ProjectBaseMixin):
     def closed_at_str(self):
         return str(self.closed_at) if self.closed_at else None
 
+    @property
+    def opening_at_str(self):
+        return str(self.opening_at) if self.opening_at else None
+
     @property
     def opening_time(self):
         return self.opening_at or self.lunch_start or self.dinner_start