Add admin support for RelatedDocument.

 - Legacy-Id: 4637

Author: levkowetz

ietf/doc/admin.py

@@ -140,3 +140,9 @@ class BallotPositionDocEventAdmin(DocEventAdmin):
 
 admin.site.register(BallotPositionDocEvent, BallotPositionDocEventAdmin)
 
+class RelatedDocumentAdmin(admin.ModelAdmin):
+    list_display = ['source', 'target', 'relationship', ]
+    list_filter = ['relationship', ]
+    search_fields = ['source__name', 'target__name', 'target__document__name', ]
+    raw_id_fields = ['source', 'target', ]
+admin.site.register(RelatedDocument, RelatedDocumentAdmin)