from django.db import models class Facture(models.Model): user = models.ForeignKey('users.User', on_delete=models.PROTECT) paiement = models.ForeignKey('Paiement', on_delete=models.PROTECT) banque = models.ForeignKey('Banque', on_delete=models.PROTECT, blank=True, null=True) cheque = models.CharField(max_length=255, blank=True) date = models.DateTimeField(auto_now_add=True) valid = models.BooleanField(default=True) def prix(self): prix = Vente.objects.all().filter(facture=self).aggregate(models.Sum('prix'))['prix__sum'] return prix def prix_total(self): return Vente.objects.all().filter(facture=self).aggregate(total=models.Sum(models.F('prix')*models.F('number'), output_field=models.FloatField()))['total'] def name(self): name = ' - '.join(vente.name for vente in Vente.objects.all().filter(facture=self)) return name def __str__(self): return str(self.date) + ' ' + str(self.user) class Vente(models.Model): facture = models.ForeignKey('Facture', on_delete=models.PROTECT) number = models.IntegerField() name = models.CharField(max_length=255) prix = models.DecimalField(max_digits=5, decimal_places=2) cotisation = models.BooleanField() duration = models.IntegerField(help_text="Durée exprimée en mois entiers", blank=True, null=True) def prix_total(self): return self.prix*self.number def __str__(self): return str(self.name) + ' ' + str(self.facture) class Article(models.Model): name = models.CharField(max_length=255) prix = models.DecimalField(max_digits=5, decimal_places=2) cotisation = models.BooleanField() duration = models.IntegerField(help_text="Durée exprimée en mois entiers", blank=True, null=True) def __str__(self): return self.name class Banque(models.Model): name = models.CharField(max_length=255) def __str__(self): return self.name class Paiement(models.Model): moyen = models.CharField(max_length=255) def __str__(self): return self.moyen class Cotisation(models.Model): facture = models.OneToOneField('Facture', on_delete=models.PROTECT) date_start = models.DateTimeField() date_end = models.DateTimeField() def __str__(self): return str(self.facture)