Did some minor fixes for the admin views.

src/gameservers/admin.py

@@ -4,9 +4,12 @@ from .models import Server, PopulationHistory
 
 class ServerAdmin(admin.ModelAdmin):
     list_display = ['title', 'site_url']
+    search_fields = ['title']
 
 class PopulationHistoryAdmin(admin.ModelAdmin):
-    list_display = ['timestamp', 'server', 'players']
+    list_display = ['timestamp', 'players', 'server']
+    list_filter = ['timestamp']
+    search_fields = ['server__title']
 
 admin.site.register(Server, ServerAdmin)
 admin.site.register(PopulationHistory, PopulationHistoryAdmin)

src/gameservers/migrations/0007_auto_20150218_2107.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('gameservers', '0006_auto_20150218_2033'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='server',
+            name='current_players',
+            field=models.PositiveIntegerField(default=0, editable=False),
+            preserve_default=True,
+        ),
+    ]

src/gameservers/models.py

@@ -4,7 +4,7 @@ class Server(models.Model):
     title = models.CharField(max_length=255)
     game_url = models.URLField()
     site_url = models.URLField(blank=True)
-    current_players = models.PositiveIntegerField(default=0)
+    current_players = models.PositiveIntegerField(default=0, editable=False)
 
     class Meta:
         ordering = ['-current_players', 'title']