Fixed #11398 - Added a pre_syncdb signal

django/core/management/commands/syncdb.py

@@ -1,11 +1,12 @@
 from optparse import make_option
+import itertools
 import traceback
 
 from django.conf import settings
 from django.core.management import call_command
 from django.core.management.base import NoArgsCommand
 from django.core.management.color import no_style
-from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal
+from django.core.management.sql import custom_sql_for_model, emit_post_sync_signal, emit_pre_sync_signal
 from django.db import connections, router, transaction, models, DEFAULT_DB_ALIAS
 from django.utils.datastructures import SortedDict
 from django.utils.importlib import import_module
@@ -80,6 +81,9 @@ class Command(NoArgsCommand):
             for app_name, model_list in all_models
         )
 
+        create_models = set([x for x in itertools.chain(*manifest.values())])
+        emit_pre_sync_signal(create_models, verbosity, interactive, db)
+
         # Create the tables for each model
         if verbosity >= 1:
             self.stdout.write("Creating tables ...\n")