Infi https://github.com/Infinidat/infi.clickhouse_orm/issues/89 fix

some refactoring

src/django_clickhouse/database.py

@@ -15,6 +15,11 @@ class Database(InfiDatabase):
         }
         super(Database, self).__init__(**infi_kwargs)
 
+    def drop_database(self):
+        # BUG fix https://github.com/Infinidat/infi.clickhouse_orm/issues/89
+        super(Database, self).drop_database()
+        self.db_exists = False
+
     def migrate(self, migrations_package_name, up_to=9999):
         raise NotImplementedError('This method is not supported by django-clickhouse.'
                                   ' Use django_clickhouse.migrations module instead.')

src/django_clickhouse/migrations.py

@@ -3,16 +3,15 @@ Migrating database
 """
 import datetime
 
+from django.db import DEFAULT_DB_ALIAS as DJANGO_DEFAULT_DB_ALIAS
 from django.db.models.signals import post_migrate
 from django.dispatch import receiver
-from django.db import DEFAULT_DB_ALIAS as DJANGO_DEFAULT_DB_ALIAS
-
 from infi.clickhouse_orm.migrations import *
 from infi.clickhouse_orm.utils import import_submodules
 
-from django_clickhouse.utils import lazy_class_import, module_exists
 from .configuration import config
 from .database import connections
+from .utils import lazy_class_import, module_exists
 
 
 class Migration:

tests/clickhouse_migrations/0001_initial.py

@@ -1,11 +1,10 @@
 
-from infi.clickhouse_orm.migrations import CreateTable
 from django_clickhouse import migrations
 from tests.clickhouse_models import ClickHouseTestModel, ClickHouseCollapseTestModel
 
 
 class Migration(migrations.Migration):
     operations = [
-        CreateTable(ClickHouseTestModel),
+        migrations.CreateTable(ClickHouseTestModel),
-        CreateTable(ClickHouseCollapseTestModel)
+        migrations.CreateTable(ClickHouseCollapseTestModel)
     ]