models.py

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

USER = auth.get_user_model()

class UserProfile(models.Model):
    user = models.OneToOneField(to=USER, related_name="profile", on_delete=models.PROTECT)
    first_name = models.CharField(max_length=255)
    last_name = models.CharField(max_length=255)
    bio = models.TextField()

    def __str__(self):
        return f"{self.first_name} {self.last_name}"

class Tag(models.Model):
    name = models.CharField(max_length=255)

    def __str__(self):
        return f"{self.name}"

class Post(models.Model):
    title = models.CharField(max_length=255)
    body = models.TextField()
    author = models.ForeignKey(to=UserProfile, on_delete=models.CASCADE, related_name="posts")
    tags = models.ManyToManyField(to=Tag, related_name="posts", blank=True)

    def __str__(self):
        return f"{self.title} by {self.author.first_name} {self.author.last_name}"

class Comment(models.Model):
    post = models.ForeignKey(to=Post, on_delete=models.CASCADE, related_name="comments")
    body = models.TextField()
    author = models.ForeignKey(to=UserProfile, on_delete=models.CASCADE, related_name="comments")

    def __str__(self):
        return f"Comment by {self.author.first_name} {self.author.last_name} on {self.post.title}"