Merge pull request #14 from singleplatform-eng/SPROD-7696_db_agnostic_migrations

SPROD-7696 add check for database vendor when creating partial length index

Author: mloo-sp

django_celery_beat/__init__.py

@@ -10,7 +10,7 @@
 
 from collections import namedtuple
 
-__version__ = '1.4.0+singleplatform.3'
+__version__ = '1.4.0+singleplatform.4'
 __author__ = 'Ask Solem'
 __contact__ = '[email protected]'
 __homepage__ = 'https://github.com/celery/django-celery-beat'

django_celery_beat/models.py

@@ -43,7 +43,11 @@ def cronexp(field):
 
 
 class CeleryMySQLIndex(Index):
-    def create_sql(self, model, schema_editor, using=''):
+
+    def _is_mysql_backend(self, connection):
+        return connection.vendor.startswith('mysql')
+
+    def _create_sql(self, model, schema_editor, using=''):
         sql_create_index = 'CREATE INDEX %(name)s ON %(table)s (%(columns)s(%(size)d))%(extra)s'
         sql_parameters = self.get_sql_create_template_values(
             model,
@@ -58,6 +62,12 @@ def create_sql(self, model, schema_editor, using=''):
         sql = sql_create_index % sql_parameters
         return sql
 
+    def create_sql(self, model, schema_editor, using=''):
+        if self._is_mysql_backend(schema_editor.connection):
+            return self._create_sql(model, schema_editor, using=using)
+        else:
+            return super(CeleryMySQLIndex, self).create_sql(model, schema_editor, using=using)
+
 
 @python_2_unicode_compatible
 class SolarSchedule(models.Model):