Add mgmt command to create trigram indexes.

chaloBEST/mumbai/management/commands/trgmidx.py

@@ -0,0 +1,18 @@
+from django.core.management.base import BaseCommand, CommandError
+from django.db import connection
+from mumbai import models
+
+class Command(BaseCommand):
+    help = "Instantiates the pg_trgm indexes"
+
+    def handle(self, *args, **options):
+        cursor = connection.cursor()
+        for name, model in models:
+            if not hasattr(model, "objects") or \
+               not isinstance(model.objects, model.TrigramSearchManager):
+                continue
+            table = model._meta.db_table
+            for column in model.objects.trigram_columns:
+                cursor.execute("""
+                    CREATE INDEX %s_%s_trgm_idx ON %s USING gin (%s gin_trgm_ops);""" % (
+                        table, column, table, column))