Obscure timer-child relations for one child use case

core/models.py

@@ -435,8 +435,13 @@ class Timer(models.Model):
 
     @property
     def title_with_child(self):
-        return format_lazy('{title} ({child})', title=str(self),
+        """ Get Timer title with child name in parenthesis. """
+        title = str(self)
+        # Only actually add the name if there is more than one Child instance.
+        if title and self.child and Child.count() > 1:
+            title = format_lazy('{title} ({child})', title=title,
                                 child=self.child)
+        return title
 
     @classmethod
     def from_db(cls, db, field_names, values):

core/templates/core/timer_list.html

@@ -27,7 +27,13 @@
             {% for timer in object_list %}
                 <tr>
                     <th scope="row"><a href="{% url 'core:timer-detail' timer.id %}">{{ timer }}</a></th>
-                    <td><a href="{% url 'core:child' timer.child.slug %}">{{ timer.child }}</a></td>
+                    <td>
+                        {% if timer.child %}
+                            <a href="{% url 'core:child' timer.child.slug %}">{{ timer.child }}</a>
+                        {% else %}
+                            &nbsp;
+                        {% endif %}
+                    </td>
                     <td>{{ timer.start }}</td>
                     <td>{{ timer.duration|duration_string }}</td>
                     <td>{{ timer.end }}</td>

core/views.py

@@ -297,6 +297,9 @@ class TimerAddQuick(PermissionRequired403Mixin, RedirectView):
 
     def get(self, request, *args, **kwargs):
         instance = models.Timer.objects.create(user=request.user)
+        # Add child relationship if there is only Child instance.
+        if models.Child.count() == 1:
+            instance.child = models.Child.objects.first()
         instance.save()
         self.url = request.GET.get(
             'next', reverse('core:timer-detail', args={instance.id}))