Django-channels: AttributeError: 'str' object 没有属性 'profile'

Question

So I have my websockets in consumers, I did in consumers that when the websocket is receive it will update with +1 a FloatField in my models, the problem is that I dont know why is not working, here is my code:

models.py:

from django.contrib.auth.models import User
from django.db import models
from django.conf import settings
from django.utils.translation import gettext_lazy as _

class ProfileImage(models.Model):
    """
    Profile model
    """
    user = models.OneToOneField(
        verbose_name=_('User'),
        to=settings.AUTH_USER_MODEL,
        related_name='profile',
        on_delete=models.CASCADE
    )
    avatar = models.ImageField(upload_to='profile_image')
    notifications = models.FloatField(default='0')

consumers.py:

async def websocket_receive(self, event):
    # when a message is received from the websocket
    print("receive", event)

    # update the message notification badge val
    other_user = self.scope['url_route']['kwargs']['username']
    
    notification = other_user.profile.objects.get(pk=1)
    notification.notifications = +1
    notification.save()

the problem is that when a websocket is receive it doesn´t update the floatfield value and it give me this error:

    notification = other_user.profile.objects.get(pk=1)
    AttributeError: 'str' object has no attribute 'profile'

does anybody know what the problem is?

Answer 1

You're passing a string into the variable other_user . then trying to access your user model through a string object. First of all, you need to use the non-static reference to the class model you setup in django models.py . Then, use the username you saved into the variable to search the database.