安装django-grappelli后，prepopulated_fields无效

Question

作为标题，我想让我的Slug字段自动填充，admin Django的原生主题完美运行，但在安装django-grappelli后，它不再起作用了。

class BlogAdmin(admin.ModelAdmin):
    exclude = ['posted']
    prepopulated_fields = {'slug':('title',)}
    list_display = ['title','category', 'posted']

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

admin.site.register(Blog, BlogAdmin)
admin.site.register(Category, CategoryAdmin)

*它没有显示任何错误