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python-blog/articles/models.py

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import re
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import markdown
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from django.contrib.auth.models import AbstractUser
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from django.contrib.contenttypes.models import ContentType
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from django.db import models
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from django.template.defaultfilters import slugify
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from django.urls import reverse
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from django.utils import timezone
from markdown.extensions.codehilite import CodeHiliteExtension
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class User(AbstractUser):
pass
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class ArticleManager(models.Manager):
def get_queryset(self):
return super().get_queryset().filter(page__isnull=True)
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class Article(models.Model):
DRAFT = "draft"
PUBLISHED = "published"
STATUS_CHOICES = [
(DRAFT, "Draft"),
(PUBLISHED, "Published"),
]
title = models.CharField(max_length=255)
content = models.TextField()
status = models.CharField(max_length=15, choices=STATUS_CHOICES, default=DRAFT)
published_at = models.DateTimeField(null=True, blank=True)
created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)
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author = models.ForeignKey(User, on_delete=models.PROTECT, default=1)
views_count = models.IntegerField(default=0)
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slug = models.SlugField(unique=True)
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objects = ArticleManager()
with_pages = models.Manager()
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class Meta:
ordering = ["-published_at"]
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def __str__(self):
return self.title
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def get_admin_url(self):
content_type = ContentType.objects.get_for_model(self.__class__)
return reverse(
"admin:%s_%s_change" % (content_type.app_label, content_type.model),
args=(self.id,),
)
def get_absolute_url(self):
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return reverse("article-detail", kwargs={"slug": self.slug})
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def get_abstract(self):
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html = self.get_formatted_content()
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return html.split("<!--more-->")[0]
def get_formatted_content(self):
md = markdown.Markdown(extensions=["extra", CodeHiliteExtension(linenums=True)])
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content = self.content
content = re.sub(r"(\s)#(\w+)", r"\1\#\2", content)
return md.convert(content)
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def publish(self):
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if not self.published_at:
self.published_at = timezone.now()
self.status = self.PUBLISHED
self.save()
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def unpublish(self):
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self.published_at = None
self.status = self.DRAFT
self.save()
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def save(self, *args, **kwargs):
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if not self.slug:
self.slug = slugify(self.title)
return super().save(*args, **kwargs)
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class Page(Article):
objects = models.Manager()
position = models.IntegerField(default=0)
class Meta:
ordering = ["position", "-published_at"]
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# class Comment(models.Model):
# username = models.CharField(max_length=255)
# email = models.EmailField(blank=True, null=True)
# content = models.TextField()
# article = models.ForeignKey(Article, on_delete=models.CASCADE)