jacobh · September 3, 2014 06:35 · Sep 3, 2014
diff --git a/gistfile1.pytb b/gistfile1.pytb
@@ -0,0 +1,30 @@
+Traceback (most recent call last):
+  File "manage.py", line 18, in <module>
+    execute_from_command_line(sys.argv)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/__init__.py", line 385, in execute_from_command_line
+    utility.execute()
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/__init__.py", line 377, in execute
+    self.fetch_command(subcommand).run_from_argv(self.argv)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/base.py", line 288, in run_from_argv
+    self.execute(*args, **options.__dict__)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/base.py", line 338, in execute
+    output = self.handle(*args, **options)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 124, in handle
+    self.write_migration_files(changes)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/core/management/commands/makemigrations.py", line 152, in write_migration_files
+    migration_string = writer.as_string()
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 129, in as_string
+    operation_string, operation_imports = OperationWriter(operation).serialize()
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 80, in serialize
+    arg_string, arg_imports = MigrationWriter.serialize(item)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 245, in serialize
+    item_string, item_imports = cls.serialize(item)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 310, in serialize
+    return cls.serialize_deconstructed(path, args, kwargs)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 221, in serialize_deconstructed
+    arg_string, arg_imports = cls.serialize(arg)
+  File "/Users/jacob/.virtualenvs/gizmag/lib/python2.7/site-packages/django/db/migrations/writer.py", line 380, in serialize
+    raise ValueError("Cannot serialize: %r\nThere are some values Django cannot serialize into migration files.\nFor more, see https://docs.djangoproject.com/en/dev/topics/migrations/#migration-serializing" % value)
+ValueError: Cannot serialize: <gizmag.file_storages.LazyStorage object at 0x10785c490>
+There are some values Django cannot serialize into migration files.
+For more, see https://docs.djangoproject.com/en/dev/topics/migrations/#migration-serializing
diff --git a/models.py b/models.py
@@ -0,0 +1,7 @@
+def get_media_upload_path(instance, filename):
+    return os.path.join(instance.get_type_slug(), filename)
+
+
+class Media(models.Model):
+    file = models.FileField(storage=media_storage, upload_to=get_media_upload_path)
+    ...