Django 1.7将代码以编程方式添加到哪里？ [英] Django 1.7 where to put the code to add Groups programmatically?

问题描述

我一直试图在Django Auth文档中找到答案，但似乎找不到我想要的东西。

I have been trying to find the answer in the Django Auth docs, but can not seem to find what I am looking for.

我遇到的问题是，当我定义用于添加组的代码（与管理页面中的组相同）时：

The problem I am having is, when I define the code for adding Groups (same as Groups in the admin page):

#read_only
group, created = Group.objects.get_or_create(name='read_only')   
if created:
    group.permissions.add(can_read_campaign)
    logger.info('read_only_user Group created')
#standard
group, created = Group.objects.get_or_create(name='standard_user') 
if created:
    group.permissions.add(can_edit_users)
    logger.info('standard_user Group created')
#admin
group, created = Group.objects.get_or_create(name='admin_user') 
if created:
    group.permissions.add(can_edit_campaign, can_edit_users)
    logger.info('admin_user Group created')

当我在models.py和 init .py中运行此代码时，它们都给我这个错误：

When I have run this code in models.py and init.py and they both give me this error:

django.core.exceptions.AppRegistryNotReady

我认为这是由于Model / init 试图过早将内容插入django应用/管理员中吗？

I presume this is due to the Model/init trying to insert things into the django app/admin too early?

如何以编程方式添加这些网上论坛？

How can I add these Groups programmatically?

编辑：

这不是重复的问题，

我已经通过使用信号和接收器解决了这个问题（django

I have solved this issues, by using signals and receivers (django modules).

我在自己的函数中添加了创建权限/组的代码，并使用接收器（post_migrate）对其进行了修饰，接收器将在迁移完成后运行此功能。完成，删除此错误。

I added the code to create the permissions/groups into it's own function and decorated this with a receiver (post_migrate), which will run this function after migrations are complete, removing this error.

@receiver(post_migrate)
def init_groups(sender, **kwargs):
    #permission and group code goes here

推荐答案

建议我此方法：

在适当的模块中创建伪造的迁移：

Create a fake migration in the appropriate module:

python manage.py makemigrations --empty yourappname

打开已创建的文件，其外观应如下所示：

Open up the file that was created, which should look like this:

# -*- coding: utf-8 -*-
from django.db import models, migrations

class Migration(migrations.Migration):

    dependencies = [
        ('yourappname', '0001_initial'),
    ]

    operations = [
    ]

并添加您的代码：

# -*- coding: utf-8 -*-
from django.db import models, migrations

def add_group_permissions():
    #read_only
    group, created = Group.objects.get_or_create(name='read_only')   
    if created:
        group.permissions.add(can_read_campaign)
        logger.info('read_only_user Group created')

    #standard
    group, created = Group.objects.get_or_create(name='standard_user') 
    if created:
        group.permissions.add(can_edit_users)
        logger.info('standard_user Group created')

    #admin
    group, created = Group.objects.get_or_create(name='admin_user') 
    if created:
        group.permissions.add(can_edit_campaign, can_edit_users)
        logger.info('admin_user Group created')

class Migration(migrations.Migration):

    dependencies = [
        ('yourappname', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(add_group_permissions),
    ]

最后，运行迁移：

python manage.py migrate

这很好，因为您可以部署到Heroku或任何地方，并确保将其应用，因为这只是另一个迁移。

This is nice because you can deploy to Heroku or wherever and be sure it'll be applied, as it's just another migration.

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