code.kerkeslager.com Git - styx.blog/blob - core/models.py

   1 import re
   2
   3 from django.contrib.auth.models import User
   4 from django.db import models
   5 from django.urls import reverse
   6 from django.utils.safestring import mark_safe
   7
   8 import commonmark
   9
  10 class Post(models.Model):
  11     title = models.CharField(max_length=256, null=True)
  12     slug = models.SlugField()
  13     author = models.ForeignKey(User, on_delete=models.CASCADE)
  14     publication_utc = models.DateTimeField(null=True, blank=True)
  15     body_markdown = models.TextField(null=True)
  16
  17     def __str__(self):
  18         return self.title
  19
  20     def get_absolute_url(self):
  21         return reverse('post-detail', kwargs={ 'slug': self.slug })
  22
  23     @property
  24     def body_html(self):
  25         return mark_safe(commonmark.commonmark(self.body_markdown))
  26
  27     @property
  28     def teaser_html(self):
  29         paragraphs = re.split(r'\n(\s*\n)+', self.body_markdown)
  30
  31         if len(paragraphs) == 0:
  32             return ''
  33
  34         teaser_markdown = paragraphs[0]
  35
  36         for p in paragraphs[1:]:
  37             if len(teaser_markdown) > 512:
  38                 break
  39             teaser_markdown += '\n\n' + p
  40
  41         return mark_safe(commonmark.commonmark(teaser_markdown))