title: How to change the default zoom level of a map in Geodjango's admin?
body: <p>I've been looking into GeoDjango recently, I'm struggling to customize the default zoom level of the openstreet map displaying in my admin section.
  Below is what I have tried but with no effect, please assist.</p>
  
  <pre><code>from django.contrib.gis import admin
  
  class LocationAdmin(admin.OSMGeoAdmin):
      default_zoom = 5
  
  admin_site.register(ReferenceSpaceLocation, LocationAdmin)
  </code></pre>
  
  <ul>
  <li><p>My model </p>
  
  <pre><code>class ReferenceSpaceLocation(models.Model):
  
      geometry = models.GeometryField()
  </code></pre></li>
  </ul>
  
  <p><a href="https://i.stack.imgur.com/WqaOh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WqaOh.png" alt="enter image description here"></a></p>