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from django.db import models
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from product_directory.models import Product
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class Warehouse(models.Model):
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name = models.CharField(max_length=255, verbose_name="Название склада")
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location = models.CharField(max_length=255, verbose_name="Расположение склада")
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is_active = models.BooleanField(default=True, verbose_name="Активен")
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class Meta:
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verbose_name = "Склад"
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verbose_name_plural = "Склады"
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def __str__(self):
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return self.name
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class StorageLocation(models.Model):
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warehouse = models.ForeignKey(Warehouse, on_delete=models.CASCADE, related_name="storage_locations", verbose_name="Склад")
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name = models.CharField(max_length=255, verbose_name="Место хранения")
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temperature_control = models.BooleanField(default=False, verbose_name="Требуется контроль температуры")
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class Meta:
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verbose_name = "Место хранения"
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verbose_name_plural = "Места хранения"
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def __str__(self):
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return f"{self.name} ({self.warehouse.name})"
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class Stock(models.Model):
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product = models.ForeignKey(Product, on_delete=models.CASCADE, verbose_name="Товар")
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quantity = models.PositiveIntegerField(default=0, verbose_name="Количество")
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location = models.CharField(max_length=255, verbose_name="Место хранения")
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def __str__(self):
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return f"{self.product.name} - {self.quantity} шт."
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class StockOperation(models.Model):
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OPERATION_TYPE_CHOICES = [
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('Incoming', 'Приход'),
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('Outgoing', 'Расход'),
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('Transfer', 'Перемещение'),
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('WriteOff', 'Списание'),
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]
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product = models.ForeignKey(
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Product,
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on_delete=models.CASCADE,
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verbose_name="Товар",
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related_name="warehouse_stock_operations"
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)
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warehouse = models.ForeignKey(Warehouse, on_delete=models.CASCADE, verbose_name="Склад")
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storage_location = models.ForeignKey(StorageLocation, on_delete=models.CASCADE, verbose_name="Место хранения")
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operation_type = models.CharField(max_length=50, choices=OPERATION_TYPE_CHOICES, verbose_name="Тип операции")
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quantity = models.PositiveIntegerField(verbose_name="Количество")
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operation_date = models.DateTimeField(auto_now_add=True, verbose_name="Дата операции")
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expiration_date = models.DateField(blank=True, null=True, verbose_name="Срок годности")
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reason = models.TextField(blank=True, null=True, verbose_name="Причина (для списания)")
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class Meta:
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verbose_name = "Операция с товаром"
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verbose_name_plural = "Операции с товарами"
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def __str__(self):
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return f"{self.operation_type} - {self.product.name} ({self.warehouse.name})"
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