Fix video table

apps/participation/tables.py

@@ -72,19 +72,17 @@ class ParticipationTable(tables.Table):
 
 
 class VideoTable(tables.Table):
-    participationname = tables.LinkColumn(
+    participation_name = tables.LinkColumn(
         'participation:participation_detail',
         args=[tables.A("participation__pk")],
         verbose_name=lambda: _("name").capitalize(),
+        accessor=tables.A("participation__team__name"),
     )
 
-    def render_participationname(self, record):
-        return record.participation.team.name
-
     class Meta:
         attrs = {
             'class': 'table table condensed table-striped',
         }
         model = Team
-        fields = ('participationname', 'link',)
+        fields = ('participation_name', 'link',)
         template_name = 'django_tables2/bootstrap4.html'