python - TypeError : object() takes no parameters when trying to admin. 网站注册

Question

所有其他模型都以相同的方式注册成功，除了一个:

尝试admin.site.register(ProductImage, ProductImageAdmin)

在 products/models.py 中:

class ProductImage(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE, blank=True, null=True, default=None)
    image = models.ImageField(upload_to='product_images/')
    is_active = models.BooleanField(default=True)
    created = models.DateTimeField(auto_now_add=True, auto_now=False)
    updated = models.DateTimeField(auto_now_add=False, auto_now=True)

    def __str__(self):
        return ('Phpoto %s' % (self.id))

    class Meta:
        verbose_name = 'photo'

在 products/admin.py 中:

class ProductImageAdmin:
    list_display = [field.name for field in ProductImage._meta.fields]
    exclude = []

    class Meta:
        model = ProductImage

错误是:

File "C:\Dev\tst\products\admin.py", line 22, in admin.site.register(ProductImage, ProductImageAdmin) File "C:\Users\Anti-\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\contrib\admin\sites.py", line 124, in re gister self._registry[model] = admin_class(model, self) TypeError: object() takes no parameters

这对 ImageField 来说有什么特别之处吗？

Answer 1

您忘记从admin.ModelAdmin继承，docs

from django.contrib import admin
class ProductImageAdmin(admin.ModelAdmin):
    ...