Include database info in welcome page

openshift/templates/openshift/index.html

@@ -51,6 +51,7 @@
 <div id="hostname">
   <p>
     Server hostname: {{ hostname }}<br>
+    Database server: {{ database_info }}<br>
     Page views: {{ count }}
   </p>
 </div>

openshift/views.py

@@ -1,14 +1,31 @@
 import os
 from django.shortcuts import render
+from django.conf import settings
 
 from .models import PageView
 
 # Create your views here.
 
+
+def _database_info():
+    db_settings = settings.DATABASES['default']
+    if 'postgres' in db_settings['ENGINE']:
+        engine = 'PostgreSQL'
+        info = '{HOST}:{PORT}/{NAME}'.format(**db_settings)
+    else:
+        engine = 'SQLite'
+        info = '{NAME}'.format(**db_settings)
+    return '{} ({})'.format(engine, info)
+
+database_info = _database_info()
+
+
 def index(request):
     hostname = os.getenv('HOSTNAME', 'unknown')
     PageView.objects.create(hostname=hostname)
+
     return render(request, 'openshift/index.html', {
         'hostname': hostname,
+        'database_info': database_info,
         'count': PageView.objects.count()
     })