SystemCheckError（Django中的子弹）

Question

我收到了这个错误（这是什么问题？我找不到此问题的根本原因。我尝试搜索此答案，但不适用于这种情况。）：

django.core.management.base.SystemCheckError: SystemCheckError: System check identified some issues:

ERRORS:
<class 'rango.admin.CategoryAdmin'>: (admin.E027) The value of 'prepopulated_fields' refers to 'slugs', which is not an attribute of 'rango.Category'.

我的管理员

from django.contrib import admin
from .models import Category, Page
class CategoryAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slugs':('name',)}

class PageAdmin(admin.ModelAdmin):
    list_display = ('title', 'category', 'url')

admin.site.register(Category, CategoryAdmin)
admin.site.register(Page, PageAdmin)

我的models.py

from django.db import models
from django.template.defaultfilters import slugify

class Category(models.Model):
    name = models.CharField(max_length=128, unique=True)
    views = models.IntegerField(default=0)
    likes = models.IntegerField(default=0)
    slug = models.SlugField(unique=True)

    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super(Category, self).save(*args, **kwargs)

    class Meta:
        verbose_name_plural = 'Categories'

    def __str__(self):  
        return self.name

class Page(models.Model):
    category = models.ForeignKey(Category, on_delete=models.CASCADE)
    title = models.CharField(max_length=128)
    url = models.URLField()
    views = models.IntegerField(default=0)

    def __str__(self):
        return self.title

Answer 1

您的模型中有一个名为slug字段，但是您正在admin中使用slugs 。 您还需要将其更改为slug ：

class CategoryAdmin(admin.ModelAdmin):
    prepopulated_fields = {'slug':('name',)}