title: Django Like Button
body: <p>I'm been trying to create a like button for my pet pictures in each board  for my app but I can't figure out how to create one because it contain Integer .Usually I have an idea and understanding of the functions I create.</p>
  
  <p>When the user clicks on the like button . The like button will increase by 1  and it will display near the picture.</p>
  
  <p>This is my picture module.</p>
  
  <pre><code>class Picture(models.Model):
      user = models.ForeignKey(User)
      board = models.ForeignKey(Board ,related_name='lo')
      image = models.FileField(upload_to="images/",blank=True,null=True)
      description = models.TextField()
      is_primary = models.BooleanField(default=False)
  
      def __unicode__(self):
          return self.description
  </code></pre>
  
  <p>Can someone please help me create the basics of a like button? So I can understand the logic of the function.</p>