When I am clicking on the modal button to add a new post in Django. I am getting the below traceback

Traceback (most recent call last):
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\core\handlers\exception.py", line 47, in inner
    response = get_response(request)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\core\handlers\base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "D:\Django_AJAX_Latest\src\posts\views.py", line 22, in post_list_and_create
    author = Profile.objects.get(user = request.user)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\manager.py", line 85, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\query.py", line 428, in get   
    clone = self._chain() if self.query.combinator else self.filter(*args, **kwargs)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\query.py", line 974, in filter    return self._filter_or_exclude(False, args, kwargs)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\query.py", line 992, in _filter_or_exclude
    clone._filter_or_exclude_inplace(negate, args, kwargs)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\query.py", line 999, in _filter_or_exclude_inplace
    self._query.add_q(Q(*args, **kwargs))
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\sql\query.py", line 1375, in add_q
    clause, _ = self._add_q(q_object, self.used_aliases)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\sql\query.py", line 1396, in _add_qn _add_q
    child_clause, needed_inner = self.build_filter(                                             n build_filter
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\sql\query.py", line 1302, in build_filter                                                                                  n check_related_objects
    self.check_related_objects(join_info.final_field, value, join_info.opts)
  File "D:\Django_AJAX_Latest\env\lib\site-packages\django\db\models\sql\query.py", line 1136, iner    return func(self._wrapped, *args)n check_related_objects
    for v in value:
nctional.py", line 249, in inner    return func(self._wrapped, *args)s)
TypeError: 'AnonymousUser' object is not iterable

Below are my files:

posts/views.py

from django.shortcuts import render
from .models import Post
from django.http import JsonResponse
from .forms import PostForm
from profiles.models import Profile


def is_ajax(request):
    return request.META.get('HTTP_X_REQUESTED_WITH') == 'XMLHttpRequest'

def post_list_and_create(request):
    form = PostForm(request.POST or None)
    if is_ajax(request=request):
        if form.is_valid():      
            author = Profile.objects.get(user = request.user)
            instance = form.save(commit=False)
            instance.author = author
            instance.save()

    context = {
        'form': form,
    }

    return render(request, 'posts/main.html', context)

profiles/models.py

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

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    bio = models.TextField(default=True)
    avatar = models.ImageField(default='avatar.jpg', upload_to='avatars')
    updated = models.DateTimeField(auto_now=True)
    created = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f"Profile of the user {self.user.username}"

posts/models.py

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

# Create your models here.

class Post(models.Model):
    title = models.CharField(max_length=200)
    body = models.TextField()
    liked = models.ManyToManyField(User, blank=True)
    author = models.ForeignKey(Profile, on_delete=models.CASCADE)
    updated = models.DateTimeField(auto_now=True)
    created = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return str(self.title)

    @property
    def like_count(self):
        return self.liked.all().count()

    class Meta:
        ordering = ("-created",)

requirements.txt

asgiref==3.4.1
backports.zoneinfo==0.2.1
Django==4.0
django-crispy-forms==1.13.0
Pillow==8.4.0
sqlparse==0.4.2
tzdata==2021.5

I have already tried using the request.is_authenticated attribute but it is giving me another error as AttributeError: 'WSGIRequest' object has no attribute 'is_authenticated'.

Can someone please help me with this?

CodePudding user response：

Error request.user is an anonymous user means that there is no logged in User,

Try using login_required decorator, to make sure that only logged-in users can access the view.

from django.contrib.auth.decorators import login_required

@login_required
def post_list_and_create(request):
...

CodePudding user response：

Anonymous user means that the user is not logged in. You need to logged in your user before it access any view.

Step 1. import the the built-in method

from django.contrib.auth import login as auth_login

Step 2.

Logged in your user in login view

auth_login(request, user)

Note Use this decorator above views except Auth that the user is not access any view without loggin. @login_required