/'QuerySet'对象上的AttributeError没有属性'users'

如何解决/'QuerySet'对象上的AttributeError没有属性'users'

我不知道为什么会收到这个错误，我是Django的新手，我进行了很多研究，但在给我答案的解释尽可能多时，我没有找到答案，但是如果您不想没问题 谢谢， 这是我的Views.py

from django.views.generic import TemplateView
from django.shortcuts import render,redirect
from django.contrib.auth.models import User

from home.forms import HomeForm
from home.models import Post,Friend


class HomeView(TemplateView):
    template_name = 'home/home.html'

    def get(self,request):
        form = HomeForm()
        posts = Post.objects.all().order_by('-created')
        users = User.objects.exclude(id=request.user.id)
        friend = Friend.objects.filter(current_user=request.user)
        friends = friend.users.all()

        args = {
            'form': form,'posts': posts,'users': users,'friends': friends
        }
        return render(request,self.template_name,args)

    def post(self,request):
        form = HomeForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False)
            post.user = request.user
            post.save()

            text = form.cleaned_data['post']
            form = HomeForm()
            return redirect('home:home')

        args = {'form': form,'text': text}
        return render(request,args)

def change_friends(request,operation,pk):
    friend = User.objects.get(pk=pk)
    if operation == 'add':
        Friend.make_friend(request.user,friend)
    elif operation == 'remove':
        Friend.lose_friend(request.user,friend)
    return redirect('home:home')

这是我的模特。py

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


class Post(models.Model):
    post = models.CharField(max_length=500)
    user = models.ForeignKey(User,on_delete=models.CASCADE)
    created = models.DateTimeField(auto_Now_add=True)
    updated = models.DateTimeField(auto_Now=True)


class Friend(models.Model):
    users = models.ManyToManyField(User)
    current_user = models.ForeignKey(User,related_name='owner',null=True,on_delete=models.CASCADE)

    @classmethod
    def make_friend(cls,current_user,new_friend):
        friend,created = cls.objects.get_or_create(
            current_user=current_user
        )
        friend.users.add(new_friend)

    @classmethod
    def lose_friend(cls,created = cls.objects.get_or_create(
            current_user=current_user
        )
        friend.users.remove(new_friend)

追踪1

Traceback (most recent call last):
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\core\handlers\exception.py",line 47,in inner
    response = get_response(request)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\core\handlers\base.py",line 179,in

_get_response
    response = wrapped_callback(request,*callback_args,**callback_kwargs)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\views\generic\base.py",line 70,in v
iew
    return self.dispatch(request,*args,**kwargs)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\views\generic\base.py",line 98,in d
ispatch
    return handler(request,**kwargs)
  File "C:\Users\daghe\Desktop\Alone-Osama\home\views.py",line 17,in get
    friends = friend.users.all()
AttributeError: 'QuerySet' object has no attribute 'users'

如果您看到一些便宜的代码，请问这是我的代码：D

跟踪2：

Traceback (most recent call last):
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\core\handlers\exception.py",in _get_response
    response = wrapped_callback(request,in view
    return self.dispatch(request,in dispatch
    return handler(request,line 25,in get
    return render(request,args)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\shortcuts.py",line 19,in render
    content = loader.render_to_string(template_name,context,request,using=using)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\loader.py",line 62,in render_to_string
    return template.render(context,request)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\backends\django.py",line 61,in render
    return self.template.render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",line 170,in render
    return self._render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",line 162,in _render
    return self.nodelist.render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",line 938,in render
    bit = node.render_annotated(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",line 905,in render_annotated
    return self.render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\loader_tags.py",line 150,in render
    return compiled_parent._render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",in render_annotated
    return self.render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\defaulttags.py",line 312,in render
    return nodelist.render(context)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\template\base.py",line 446,in render
    url = reverse(view_name,args=args,kwargs=kwargs,current_app=current_app)
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\urls\base.py",line 87,in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view,prefix,**kwargs))
  File "C:\Users\daghe\anaconda3\envs\env\lib\site-packages\django\urls\resolvers.py",line 685,in _reverse_with_prefix
    raise noreverseMatch(msg)

Exception Type: noreverseMatch at /
Exception Value: Reverse for 'create' not found. 'create' is not a valid view function or pattern name.

解决方法

是这一行：

friends = friend.users.all()

您已经忘记了模型类以大写字母开头：）

friends = Friend.users.all()

应该可以工作...基本上没有称为friend的模型，因此它当然没有user属性！