New property on IP model

last_used_formatted - Returns last_used if valid, else "N/A"

models.py

@@ -375,6 +375,13 @@ class IP(models.Model):
         verbose_name = "IP"
         verbose_name_plural = "IPs"
 
+    @property
+    def last_used_formatted(self):
+        if self.last_used:
+            return self.last_used
+        else:
+            return "N/A"
+
     @property
     def associated(self):
         ips = IP.objects.filter(ip=self.ip)

templates/minecraft_manager/ip.html

@@ -14,7 +14,7 @@
       {% for i in ips %}
           <tr>
               <td><a href="{% url "player" %}{{ i.player.id }}">{{ i.player.username }}</a></td>
-              <td>{{ i.last_used }}</td>
+              <td>{{ i.last_used_formatted }}</td>
           </tr>
       {% endfor %}
       </tbody>

templates/minecraft_manager/player_info.html

@@ -59,7 +59,7 @@
                   {% for ip in form.ips %}
                       <tr class="default" data-id="" data-url="{% url 'ip' ip.id %}">
                           <!-- {{ ip.id }} -->
-                          <td>{{ ip.ip }} ({{ ip.last_used }})</td>
+                          <td>{{ ip.ip }} ({{ ip.last_used_formatted }})</td>
                           {% if ip.associated %}
                               <td>
                               {% for assoc in ip.associated %}