title: How to make a model field as hyperlink in django models
body: <pre><code>class Trip(models.Model):
      trip_number = models.CharField(
          _("Trip Number"), max_length=128, db_index=True, unique=True, 
      blank=True)
  </code></pre>
  
  <p>what i am looking is to make this trip_number as hyperlink.</p>