60 lines
2.3 KiB
Python
60 lines
2.3 KiB
Python
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from django.db import models
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from datetime import timedelta, date
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class Nomenclature(models.Model):
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name = models.CharField(max_length=255)
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gtin = models.CharField(max_length=14, unique=True)
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unit = models.CharField(max_length=50, default="шт")
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def __str__(self):
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return self.name
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class Sticker(models.Model):
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nomenclature = models.ForeignKey("Nomenclature", on_delete=models.CASCADE)
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quantity = models.IntegerField()
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emission_date = models.DateField()
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last_revision_date = models.DateField(null=True, blank=True)
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location = models.CharField(max_length=255)
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status = models.CharField(max_length=255, default="в наличии")
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def is_expired(self):
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"""Проверяем, истёк ли срок годности (1 год)"""
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if not self.emission_date:
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return False
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expiration_date = self.emission_date + timedelta(days=365) # 12 месяцев
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return date.today() > expiration_date
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def save(self, *args, **kwargs):
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"""При сохранении автоматически обновляем статус"""
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if self.is_expired():
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self.status = "просрочены"
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elif self.is_expiring_soon():
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self.status = "скоро истекает"
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else:
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self.status = "в наличии"
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super().save(*args, **kwargs)
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def is_expiring_soon(self):
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"""Срок годности истекает через 1 месяц"""
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if not self.emission_date:
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return False
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expiration_date = self.emission_date + timedelta(days=365)
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return expiration_date - timedelta(days=30) <= date.today() < expiration_date
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class StickerMovement(models.Model):
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sticker = models.ForeignKey(Sticker, on_delete=models.CASCADE)
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date = models.DateTimeField(auto_now_add=True)
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from_location = models.CharField(max_length=50)
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to_location = models.CharField(max_length=50)
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quantity = models.IntegerField()
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def save(self, *args, **kwargs):
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if self.from_location == "склад" and self.to_location == "цех":
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self.sticker.location = "цех"
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elif self.to_location == "склад":
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self.sticker.location = "склад"
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self.sticker.save()
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super().save(*args, **kwargs)
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