在Django admin中隐藏字段

Question

我想通过设置editable = False来隐藏管理员中的slug字段,但每次我这样做时都会收到以下错误:

KeyError at /admin/website/program/6/
Key 'slug' not found in Form
Request Method: GET
Request URL:    http://localhost:8000/admin/website/program/6/
Exception Type: KeyError
Exception Value:    
Key 'slug' not found in Form
Exception Location: c:\Python26\lib\site-packages\django\forms\forms.py in __getitem__, line 105
Python Executable:  c:\Python26\python.exe
Python Version: 2.6.4

不知道为什么会这样

Answer 1

我不能说出你的确切错误,但这对我有用...

from django.template.defaultfilters import slugify
# Create your models here.

class Program(models.Model):
    title=models.CharField(max_length=160,help_text="title of the program")
    description=models.TextField(help_text="Description of the program")
    slug=models.SlugField(max_length=160,blank=True,editable=False)

    def __unicode__ (self):
        return self.title

    class Meta:
        verbose_name="KCDF Program"
        verbose_name_plural="KCDF Programs"

    def save(self):
        self.slug = slugify(self.title)
        super(Program,self).save()

    def get_absolute_url(self):
        return "/program/%s/" % self.slug

当模型保存时,这会将你甩掉一个slug字段.

只需在ModelAdmin中省略自动填充内容即可.

我在管理员中运行没有问题.

Answer 2

我的解决方案不仅隐藏了slug字段,还允许在尚未保存时更换slug.问题是所使用的字段prepopulated_fields必须是格式,但如果只是readonly则不存在.prepopulated_fields如果未设置readonly,则仅通过设置来解决此问题.

class ContentAdmin(admin.ModelAdmin):
    def get_readonly_fields(self, request, obj=None):
        if obj:
            return ('slug',)
        return ()
    def get_prepopulated_fields(self, request, obj=None):
        if not obj:
            return {'slug': ('title',)}
        return {}