import backend-related fixes from Django 1.7.5

README.rst

@@ -17,7 +17,7 @@ Microsoft SQL Server and Azure SQL Database.
 Features
 --------
 
--  Supports Django 1.7.4
+-  Supports Django 1.7.5
 -  Supports Microsoft SQL Server 2005, 2008/2008R2, 2012, 2014 and
    Azure SQL Database
 -  Supports LIMIT+OFFSET and offset w/o LIMIT emulation.
@@ -28,7 +28,7 @@ Features
 Dependencies
 ------------
 
--  Django 1.7.4
+-  Django 1.7.5
 -  pyodbc 3.0 or newer
 
 Installation

setup.py

@@ -28,7 +28,7 @@
     license='BSD',
     packages=['sql_server', 'sql_server.pyodbc'],
     install_requires=[
-        'Django>=1.7.4',
+        'Django>=1.7.5,<1.8',
         'pyodbc>=3.0',
     ],
     classifiers=CLASSIFIERS,

sql_server/pyodbc/base.py

@@ -23,7 +23,7 @@
 from django.utils.six import binary_type, text_type
 from django.utils.timezone import utc
 from django import VERSION as DjangoVersion
-if DjangoVersion[:3] >= (1,7,4):
+if DjangoVersion[:3] >= (1,7,5):
     _DJANGO_VERSION = 17
 else:
     raise ImproperlyConfigured("Django %d.%d.%d is not supported." % DjangoVersion[:3])

sql_server/pyodbc/schema.py

@@ -4,6 +4,7 @@
 
 from django.db.backends.schema import BaseDatabaseSchemaEditor, logger
 from django.db.models.fields import AutoField
+from django.db.models.fields.related import ManyToManyField
 from django.utils import six
 from django.utils.text import force_text
 
@@ -302,7 +303,8 @@ def add_field(self, model, field):
         table instead (for M2M fields)
         """
         # Special-case implicit M2M tables
-        if field.get_internal_type() == 'ManyToManyField' and field.rel.through._meta.auto_created:
+        if ((isinstance(field, ManyToManyField) or field.get_internal_type() == 'ManyToManyField') and
+                field.rel.through._meta.auto_created):
             return self.create_model(field.rel.through)
         # Get the column's definition
         definition, params = self.column_sql(model, field, include_default=True)
@@ -470,7 +472,8 @@ def remove_field(self, model, field):
         but for M2Ms may involve deleting a table.
         """
         # Special-case implicit M2M tables
-        if field.get_internal_type() == 'ManyToManyField' and field.rel.through._meta.auto_created:
+        if ((isinstance(field, ManyToManyField) or field.get_internal_type() == 'ManyToManyField') and
+                field.rel.through._meta.auto_created):
             return self.delete_model(field.rel.through)
         # It might not actually have a column behind it
         if field.db_parameters(connection=self.connection)['type'] is None: