title: Showing related items to the same model on detail page
body: <p>I'm working on the News model. I have a list page and a detail page.
  I need on the detail page with the option of selecting other related news in the admin panel and saving them on the site.</p>
  
  <p>My model:</p>
  
  <pre><code>class News(models.Model):
      title = models.CharField(max_length=500)
      subtitle = models.CharField(max_length=1000, blank=True)
      text = models.TextField()
      link = models.ForeignKey('.'.join(LINK_MODEL), null=True, blank=True)
      link_title = models.CharField(max_length=500)
      date = models.DateField(null=True)
      image = FilerImageField()
  
      class Meta:
          verbose_name_plural = 'news'
          ordering = ['-date']
  </code></pre>
  
  <p>Should I use a foreign key?</p>