Django 中间件 - 'AnonymousUser' 对象不可迭代

Question

context/code 的相关问题：

所以我刚刚得到帮助并得到了与此相关的其他问题的回答但是在我添加代码之后我发现每次未登录的用户查看该网站时他们都会看到下面的错误所以任何帮助不胜感激。谢谢

错误：'AnonymousUser' object is not iterable

C:\Users\...\account\banning\middleware.py in __call__
        if(UserBanning.objects.filter(ban=True, user=request.user)): …

middleware.py:

from .models import UserBanning
from django.shortcuts import render, redirect


class BanManagement():
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        if(UserBanning.objects.filter(ban=True, user=request.user)):
            context = {
                'banned': banned[0],
            }
            return render(request, "account/banned.html", context)
        else:
            response = self.get_response(request)
            return response

models.py

from django.db import models
from django.contrib.auth.models import User
from django.conf import settings

class UserBanning(models.Model):
    user = models.ForeignKey(User, verbose_name="Username", help_text="Choose Username", on_delete=models.CASCADE)
    ban = models.BooleanField(default=True, verbose_name="Ban", help_text="Users Bans")
    reason = models.CharField(max_length=500, blank=True)

    class Meta:
        verbose_name_plural = "User Banning"
        ordering = ('user',)

    def __str__(self):
        return f"{self.user}"

Answer 1

像这样更改代码：

def __call__(self, request):

    if request.user.is_authenticated:
        banned = UserBanning.objects.filter(ban=True, user=request.user)
        if banned.exists():
            context = {
                'banned': banned[0],
            }
            return render(request, "account/banned.html", context)

    response = self.get_response(request)
    return response

说明

我正在检查用户 is_authenticated or not. If not authenticated, then there is no point for checking banned or not. Then I am querying through UserBanning model to check if the user exists()。

Django 中间件 - 'AnonymousUser' 对象不可迭代

Django Middleware - 'AnonymousUser' object is not iterable

django

middleware

说明