Django 1.7迁移找不到应用 [英] Django 1.7 migration cannot find app

问题描述

我正在为应用程序 Notification 创建数据迁移，在这里我使用的是模型 Manager ，来自应用程序帐户

I'm creating a data migration for app Notification, in here i'm using the reference of model, Manager, from app accounts

Manager = apps.get_model("accounts", "Manager")

抛出错误：

    self.code(from_state.render(), schema_editor)
  File "/home/notifications/migrations/0004_auto_20150720_0127.py", line 12, in set_notification_setttings
    Manager = apps.get_model("accounts", "Manager")
  File "/home/local/lib/python2.7/site-packages/django/apps/registry.py", line 202, in get_model
    return self.get_app_config(app_label).get_model(model_name.lower())
  File "/home/local/lib/python2.7/site-packages/django/apps/registry.py", line 150, in get_app_config
    raise LookupError("No installed app with label '%s'." % app_label)
LookupError: No installed app with label 'accounts'

尽管f从rom shell我尝试了类似的方法，并且效果很好

Although from shell i tried something like and it worked

>> from django.apps import apps
>> apps.get_app_config('accounts').get_model('Manager'.lower())
>> accounts.models.Manager

任何亮点为何在迁移过程中会失败？

Any light on Why is it failing in case of migration ?

推荐答案

您的问题可能已经解决，但其他人可能会遇到此问题。

Your issue is probably already resolved but somebody else might come across this question.

如果Manager模型不在创建迁移的同一应用中，则需要在迁移中为应用帐户添加依赖项。示例：

If the Manager model is not in the same app where you are creating the migration you need to add the dependency for the app accounts in the migration. Example:

class Migration(migrations.Migration):
    dependencies = [
        ('Current_App_Name', 'XYZ_Last_Migration_of_App'),
        ('accounts', '0012_auto_XYZ'),
        ...,
    ]`
    ...

这篇关于Django 1.7迁移找不到应用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！