155 lines
4.8 KiB
Python
155 lines
4.8 KiB
Python
import random
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import re
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import uuid
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from functools import cached_property
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import html2text
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import markdown
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import readtime
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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
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from markdown.extensions.codehilite import CodeHiliteExtension
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from articles.markdown import LazyLoadingImageExtension
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from articles.utils import build_full_absolute_url
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class User(AbstractUser):
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pass
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class AdminUrlMixin:
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def get_admin_url(self):
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content_type = ContentType.objects.get_for_model(self.__class__)
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return reverse(
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"admin:%s_%s_change" % (content_type.app_label, content_type.model),
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args=(self.id,),
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)
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def format_article_content(content):
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md = markdown.Markdown(
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extensions=[
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"extra",
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"admonition",
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CodeHiliteExtension(linenums=False, guess_lang=False),
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LazyLoadingImageExtension(),
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]
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)
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content = re.sub(r"(\s)#(\w+)", r"\1\#\2", content)
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return md.convert(content)
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class Article(AdminUrlMixin, models.Model):
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DRAFT = "draft"
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PUBLISHED = "published"
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STATUS_CHOICES = [
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(DRAFT, "Draft"),
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(PUBLISHED, "Published"),
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]
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title = models.CharField(max_length=255)
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content = models.TextField()
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status = models.CharField(max_length=15, choices=STATUS_CHOICES, default=DRAFT)
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published_at = models.DateTimeField(null=True, blank=True)
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created_at = models.DateTimeField(auto_now_add=True)
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updated_at = models.DateTimeField(auto_now=True)
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author = models.ForeignKey(User, on_delete=models.PROTECT, default=1)
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views_count = models.IntegerField(default=0)
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slug = models.SlugField(unique=True, max_length=255)
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keywords = models.CharField(max_length=255, blank=True)
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has_code = models.BooleanField(default=False, blank=True)
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is_home = models.BooleanField(default=False, blank=True)
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custom_css = models.TextField(blank=True)
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draft_key = models.UUIDField(default=uuid.uuid4)
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class Meta:
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ordering = ["-published_at"]
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def __str__(self):
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return f"{self.title}"
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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]
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@cached_property
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def get_description(self):
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html = self.get_formatted_content
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converter = html2text.HTML2Text()
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converter.ignore_images = True
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converter.ignore_links = True
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converter.ignore_tables = True
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converter.ignore_emphasis = True
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text = converter.handle(html)
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total_length = 0
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text_result = []
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for word in text.split():
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if len(word) + 1 + total_length > 160:
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break
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text_result.append(word)
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total_length += len(word) + 1
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return " ".join(text_result) + "..."
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@cached_property
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def get_formatted_content(self):
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return format_article_content(self.content)
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def publish(self):
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if not self.published_at:
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self.published_at = timezone.now()
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self.status = self.PUBLISHED
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self.save()
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return self
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def unpublish(self):
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self.published_at = None
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self.status = self.DRAFT
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self.save()
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return self
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def save(self, *args, **kwargs):
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if not self.slug:
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self.slug = slugify(self.title)
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return super().save(*args, **kwargs)
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@property
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def draft_public_url(self):
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url = self.get_absolute_url() + f"?draft_key={self.draft_key}"
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return build_full_absolute_url(request=None, url=url)
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def refresh_draft_key(self):
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self.draft_key = uuid.uuid4()
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self.save()
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def get_read_time(self):
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content = self.get_formatted_content
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if content:
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return readtime.of_html(content).minutes
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return 0
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@cached_property
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def get_related_articles(self):
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related_articles = set()
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for keyword in self.get_formatted_keywords:
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potential_articles = Article.objects.filter(
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keywords__icontains=keyword,
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status=Article.PUBLISHED,
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).exclude(pk=self.pk)
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for article in potential_articles:
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if keyword in article.get_formatted_keywords:
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related_articles.add(article)
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sample_size = min([len(related_articles), 3])
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return random.sample(related_articles, sample_size)
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@cached_property
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def get_formatted_keywords(self):
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return list(
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filter(None, map(lambda k: k.strip().lower(), self.keywords.split(",")))
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)
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