models.py

from django.db import models
from account.models import Profile


class Article(models.Model):
    author = models.ForeignKey(Profile, related_name="author", on_delete=models.DO_NOTHING)
    title = models.CharField(null=False, max_length=200)
    text = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True, editable=False)
    updated_at = models.DateTimeField(auto_now=True, editable=False)

    def __str__(self):
        return self.title