add more info to admin overview

passbook/admin/templates/administration/base.html

@@ -20,5 +20,8 @@
   <li>
     <a href="#">{% trans 'Users' %}</a>
   </li>
+  <li class="{% is_active_app 'admin' %}">
+    <a href="{% url 'admin:index' %}">{% trans 'Django' %}</a>
+  </li>
 </ul>
 {% endblock %}

passbook/admin/templates/administration/overview.html

@@ -15,6 +15,18 @@
     </div>
   </div>
 </div>
+<div class="col-xs-6 col-sm-2 col-md-2">
+  <div class="card-pf card-pf-accented card-pf-aggregate-status">
+    <h2 class="card-pf-title">
+      <a href="#"><span class="fa fa-shield"></span><span class="card-pf-aggregate-status-count"></span> {% trans 'Providers' %}</a>
+    </h2>
+    <div class="card-pf-body">
+      <p class="card-pf-aggregate-status-notifications">
+        <span class="card-pf-aggregate-status-notification"><a href="#"><span class="pficon pficon-ok"></span>{{ provider_count }}</a></span>
+      </p>
+    </div>
+  </div>
+</div>
 <div class="col-xs-6 col-sm-2 col-md-2">
   <div class="card-pf card-pf-accented card-pf-aggregate-status">
     <h2 class="card-pf-title">

passbook/admin/views/overview.py

@@ -2,7 +2,7 @@ from django.contrib.auth.mixins import LoginRequiredMixin
 from django.views.generic import TemplateView
 
 from passbook.admin.mixins import AdminRequiredMixin
-from passbook.core.models import Application, Rule, User
+from passbook.core.models import Application, Rule, User, Provider
 
 
 class AdministrationOverviewView(AdminRequiredMixin, TemplateView):
@@ -13,4 +13,5 @@ class AdministrationOverviewView(AdminRequiredMixin, TemplateView):
         kwargs['application_count'] = len(Application.objects.all())
         kwargs['rule_count'] = len(Rule.objects.all())
         kwargs['user_count'] = len(User.objects.all())
+        kwargs['provider_count'] = len(Provider.objects.all())
         return super().get_context_data(**kwargs)