Showcase two sponsors in header, in a randomly ordered list

website/partners/context_processors.py

+from random import shuffle
+
+from partners.models import Partner
+
+
+def showcased_partners(request):
+    if 'partner_sequence' not in request.session:
+        partner_ids = [p.id for p in Partner.objects.filter(is_active=True)]
+        shuffle(partner_ids)
+        request.session['partner_sequence'] = partner_ids
+
+    sequence = request.session['partner_sequence']
+    chosen, rest = sequence[:2], sequence[2:]
+    request.session['partner_sequence'] = rest + chosen
+
+    partners = tuple(Partner.objects.get(id=id) for id in chosen)
+
+    return {'showcased_partners': partners}

website/partners/templates/partners/showcased_partner.html

+<div id="partner-{{ position }}" class="partner-header">
+    <a href="{% url "partners:partner" partner.slug %}">
+        <img src="{{ partner.logo.url }}" alt="Logo {{ partner.name }}"/>
+    </a>
+</div>
\ No newline at end of file

website/thaliawebsite/settings/settings.py

@@ -81,6 +81,7 @@ TEMPLATES = [
                 'django.template.context_processors.media',
                 'django.contrib.auth.context_processors.auth',
                 'django.contrib.messages.context_processors.messages',
+                'partners.context_processors.showcased_partners',
             ],
         },
     },

website/thaliawebsite/templates/base.html

@@ -58,15 +58,15 @@
                 <!-- /#logo -->
 
                 <!-- #partner-left -->
-                <div id="partner-left" class="partner-header">
-                    {% block partner_header_left %}{% endblock partner_header_left %}
-                </div>
+                {% if showcased_partners|length > 0 %}
+                    {% include "partners/showcased_partner.html" with partner=showcased_partners.0 position="left" %}
+                {% endif %}
                 <!-- /#partner-left -->
 
                 <!-- #partner-right -->
-                <div id="partner-right" class="partner-header">
-                    {% block partner_header_right %}{% endblock partner_header_right %}
-                </div>
+                {% if showcased_partners|length > 1 %}
+                    {% include "partners/showcased_partner.html" with partner=showcased_partners.1 position="right" %}
+                {% endif %}
                 <!-- /#partner-right -->
             </div>
             <!-- /#logo-header -->