update requirements

billard/models.py

@@ -2,8 +2,6 @@ import uuid
 import logging
 from django.db import models
 from django.contrib.auth.models import User
-from datetime import datetime, timezone
-from billard import utils
 from django.contrib.auth.models import User
 from django.db.models.signals import post_save
 from django.dispatch import receiver
@@ -70,7 +68,6 @@ class Desk(models.Model):
     prize_hh = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True,
                                    verbose_name="Preis Happy Hour")
 
-
     def __str__(self):
         return '{}, {}'.format(self.client.uuid, self.name)
 
@@ -88,6 +85,7 @@ class Accounting(models.Model):
     reporter_uuid = models.UUIDField(blank=True, null=True, verbose_name='Reporter UUID')
     prize_normal = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True, verbose_name="Preis Normalzeit")
     prize_hh = models.DecimalField(max_digits=5, decimal_places=2, blank=True, null=True, verbose_name="Preis Happy Hour")
+    account_user = models.ManyToManyField(User, related_name='accountings', verbose_name="Abr. Benutzer")
 
     def __str__(self):
         return '{}: {} -> {}, {}, {}'.format(self.desk, self.time_from, self.time_to, self.prize, self.billed)