Resolve "possibility to remove worker"

There is possibility to disable (not remove worker). Such worker cannot login anymore and doesn't appear in daily planning.

Closes #151 (closed)

smash/web/api_views/daily_planning.py

@@ -235,8 +235,7 @@ def events(request, date):
 
     availabilities = []
     holidays = []
-    workers = Worker.objects.filter(locations__in=get_filter_locations(request.user)).exclude(
-        role=Worker.ROLE_CHOICES_SECRETARY).distinct()
+    workers = get_workers_for_daily_planning(request)
 
     for worker in workers:
         availabilities = availabilities + get_availabilities(worker, date)
@@ -249,12 +248,18 @@ def events(request, date):
     })
 
 
+def get_workers_for_daily_planning(request):
+    result = Worker.objects.filter(locations__in=get_filter_locations(request.user)). \
+        filter(user__is_active=True).exclude(
+        role=Worker.ROLE_CHOICES_SECRETARY).distinct()
+    return result
+
+
 def availabilities(request, date):
     availabilities = []
     holidays = []
     conflicts = []
-    workers = Worker.objects.filter(locations__in=get_filter_locations(request.user)).exclude(
-        role=Worker.ROLE_CHOICES_SECRETARY).distinct()
+    workers = get_workers_for_daily_planning(request)
 
     for worker in workers:
         availabilities = availabilities + get_availabilities(worker, date)