social_media_platform/application/models.py

from django.db import models
from django.contrib.auth.models import User
from django.utils import timezone
from taggit.managers import TaggableManager


class CustomUser(models.Model):
    user = models.OneToOneField(User, null=True, on_delete=models.CASCADE)
    tags = TaggableManager()


class Post(models.Model):
    author = models.ForeignKey('auth.User', on_delete=models.CASCADE)
    title = models.CharField(max_length=200)
    text = models.TextField()
    created_date = models.DateTimeField(
        default=timezone.now)
    published_date = models.DateTimeField(
        blank=True, null=True)
    tags = TaggableManager()

    def publish(self):
        self.published_date = timezone.now()
        self.save()

    def __str__(self):
        return self.title