text: from ckeditor_uploader.fields import RichTextUploadingField
  from django.db import models
  
  # Create your models here.
  from question.models import Label
  from users.models import User
  
  
  class Article(models.Model):
      title = models.CharField(max_length=100, null=True, default=None, verbose_name="标题")
      content = RichTextUploadingField(default='', verbose_name='文章内容')
      image = models.CharField(max_length=100, default=None, verbose_name="文章封面")
      createtime = models.DateTimeField(auto_now_add=True, null=True, verbose_name="创建日期")
      updatetime = models.DateTimeField(auto_now=True, null=True, verbose_name="修改日期")
      visits = models.IntegerField(null=True, default=0, verbose_name="浏览量")
      thumbup = models.IntegerField(null=True, default=0, verbose_name="点赞数")
      comment_count = models.IntegerField(null=True, default=0, verbose_name="评论数")
      user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='articles', verbose_name='用户ID')
      channel = models.ForeignKey("Channel", related_name="articles", on_delete=models.CASCADE, null=True, default=None,
                                  verbose_name="所属频道")
      labels = models.ManyToManyField(Label, symmetrical=False, related_name='articles')  # 这个问题属于哪些标签的
      collected_users = models.ManyToManyField(User, symmetrical=False, related_name='collected_articles')  # 被哪些用户收藏
  
      class Meta:
          db_table = "tb_article"
          verbose_name = "文章"
          verbose_name_plural = verbose_name
          ordering = ['-createtime']
  
      def __str__(self):
          return self.title
  
  
  class Channel(models.Model):
      name = models.CharField(max_length=100, null=True, default=None, verbose_name="频道名称")
  
      class Meta:
          db_table = "tb_channel"
          verbose_name = "频道"
          verbose_name_plural = verbose_name
  
      def __str__(self):
          return self.name
  
  
  class Comment(models.Model):
      content = models.CharField(max_length=1000, default='', verbose_name='回答内容')
      createtime = models.DateTimeField(auto_now_add=True, null=True, verbose_name="创建日期")
      updatetime = models.DateTimeField(auto_now=True, null=True, verbose_name="修改日期")
      parent = models.ForeignKey('self', on_delete=models.SET_NULL, related_name='subs', null=True, blank=True,
                                 verbose_name='父评论')
      article = models.ForeignKey(Article, on_delete=models.CASCADE, related_name="comments", default=None,
                                  verbose_name="问题ID")
      user = models.ForeignKey(User, on_delete=models.CASCADE, related_name="comments", default=None, verbose_name="用户ID")
  
      class Meta:
          db_table = "article_comment"
          verbose_name = "评论"
          verbose_name_plural = verbose_name
          ordering = ['-createtime']  # 指明默认排序
  
      def __str__(self):
          return self.content
  