Show active_domain and add 'go to global' button.

musician/templates/musician/mail.html

@@ -2,8 +2,11 @@
 {% load i18n %}
 
 {% block content %}
+{% if active_domain %}
+<a class="btn-arrow-left" href="{% url 'musician:mails' %}">{% trans "Go to global" %}</a>
+{% endif %}
 
-<h1 class="service-name">{{ service.verbose_name }}</h1>
+<h1 class="service-name">{{ service.verbose_name }}{% if active_domain %} <span class="font-weight-light">{% trans "for" %} {{ active_domain.name }}</span>{% endif %}</h1>
 <p class="service-description">{{ service.description }}</p>
 <table class="table service-list">
     <colgroup>

musician/views.py

@@ -177,10 +177,19 @@ class MailView(ServiceListView):
     def get_queryfilter(self):
         """Retrieve query params (if any) to filter queryset"""
         domain_id = self.request.GET.get('domain')
-        if domain_id is None:
-            return ''
+        if domain_id:
+            return "domain={}".format(domain_id)
 
-        return "domain={}".format(domain_id)
+        return ''
+
+    def get_context_data(self, **kwargs):
+        context = super().get_context_data(**kwargs)
+        domain_id = self.request.GET.get('domain')
+        if domain_id:
+            context.update({
+                'active_domain': self.orchestra.retrieve_domain(domain_id)
+            })
+        return context
 
 
 class MailingListsView(ServiceListView):