如何隐藏或禁用＆＃39; slug＆＃39; django admin中的字段？

Question

我想在django管理页面中禁用（首选）或隐藏'slug'字段。我从django源代码“prepopulated_fields crashes with get_readonly_fields”中发现了bug，但它实际上并没有解决问题。

我正在使用django 1.5.5

示例基本情况：

models.py

from django.db import models

class Post(models.Model):
    title = models.CharField(max_length=140, unique=True)
    slug = models.SlugField(max_length=140, unique=True)
...

admin.py

from django.contrib import admin
from blog.models import Post

class PostAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slug': ('title',)}
    readonly_fields = ('slug',)
...

例外

KeyError at /admin/blog/post/2/
u"Key 'slug' not found in Form"

  Request Method:   GET
  Request URL:      http://127.0.0.1:8000/admin/blog/post/2/
  Django Version:   1.5.5
  Exception Type:   KeyError
  Exception Value:  u"Key 'slug' not found in Form"
  Exception Location:   /home/XXXXXX/django_projects/virtualenvs/myenv27/local/lib/python2.7/site-packages/django/forms/forms.py in __getitem__, line 111
  Python Executable:    /home/XXXXXX/django_projects/virtualenvs/myenv27/bin/python
  Python Version:   2.7.3

这可能是非常简单的问题，但我找不到工作解决方案。也许有人知道这个问题的好方法。

感谢。

Answer 1

未经测试，但应该关闭：

class PostAdmin(admin.ModelAdmin):
    ...


    def __init__(self, *args, **kwargs):
        super(PostAdmin, self).__init__(*args, **kwargs)

        if not self.instance:
            self.prepopulated_fields = {'slug': ('title',)}


    def get_readonly_fields(self, request, obj=None):
        fields = []
        if obj:
            fields += ['slug']

        return fields