Show timetables list (only necessary fields)

apps/timetable/serialziers.py

@@ -79,7 +79,13 @@ class ScheduleCreateSerializer(ScheduleRUDSerializer):
         return instance
 
 class TimetableSerializer(serializers.ModelSerializer):
+    """Serailzier for Timetable model."""
+    weekday_display = serializers.CharField(source='get_weekday_display',
+                                            read_only=True)
 
     class Meta:
         model = Timetable
-        fields = '__all__'
+        fields = (
+            'id',
+            'weekday_display',
+        )