models.py

from django.db import models
from django.utils import timezone
from django.contrib.auth.models import User
from django.urls import reverse

from taggit.managers import TaggableManager


class PublishedManager(models.Manager):
    def get_queryset(self):
        return super(PublishedManager, self).get_queryset()\
            .filter(status='published')


class Post(models.Model):
    STATUS_CHOICES = (
        ('draft', 'Draft'),
        ('published', 'Published')
    )
    title = models.CharField(max_length=250)
    slug = models.SlugField(max_length=250, unique_for_date='publish')
    author = models.ForeignKey(User, on_delete=models.CASCADE)
    body = models.TextField()
    image = models.ImageField(upload_to="%Y/%m/%d/")
    publish = models.DateTimeField(default=timezone.now)
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    status = models.CharField(
        max_length=10,
        choices=STATUS_CHOICES,
        default='draft'
    )

    objects = models.Manager()
    published = PublishedManager()
    tags = TaggableManager()

    class Meta:
        ordering = ('-publish',)

    def __str__(self):
        return self.title

    def get_absolute_url(self):
        return reverse(
            "blog:post_detail",
            args=[
                self.publish.year,
                self.publish.month,
                self.publish.day,
                self.slug
            ]
        )


class Comment(models.Model):
    post = models.ForeignKey(
        Post, on_delete=models.CASCADE, related_name='comments')
    name = models.CharField(max_length=80)
    email = models.EmailField()
    body = models.TextField()
    created = models.DateTimeField(auto_now_add=True)
    updated = models.DateTimeField(auto_now=True)
    active = models.BooleanField(default=True)

    class Meta:
        ordering = ('created',)

    def __str__(self):
        return f'Comment by {self.name} on {self.post}'