61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
import uuid
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from django.db import models
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from django.db.models import Q
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from django.db.models.functions import Lower
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class ProductKind(models.TextChoices):
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PRODUCT = "product", "Товар"
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SERVICE = "service", "Услуга"
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BUNDLE = "bundle", "Комплект"
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class Product(models.Model):
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"""Canonical sellable or stockable SKU used by every data source."""
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id = models.UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
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parent = models.ForeignKey(
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"self",
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on_delete=models.PROTECT,
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null=True,
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blank=True,
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related_name="variants",
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verbose_name="Родительский товар",
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)
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kind = models.CharField(
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"Тип",
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max_length=20,
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choices=ProductKind.choices,
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default=ProductKind.PRODUCT,
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)
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sku = models.CharField("Внутренний артикул", max_length=128, unique=True)
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name = models.CharField("Название", max_length=255)
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barcode = models.CharField("Штрихкод", max_length=64, blank=True, db_index=True)
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description = models.TextField("Описание", blank=True)
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is_active = models.BooleanField("Активен", default=True)
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created_at = models.DateTimeField("Создано", auto_now_add=True)
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updated_at = models.DateTimeField("Обновлено", auto_now=True)
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class Meta:
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verbose_name = "Товар"
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verbose_name_plural = "Товары"
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ordering = ["name", "sku"]
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constraints = [
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models.CheckConstraint(
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condition=~Q(parent=models.F("id")),
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name="commerce_product_not_own_parent",
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),
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models.UniqueConstraint(
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Lower("sku"), name="commerce_product_sku_case_insensitive"
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),
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]
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indexes = [
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models.Index(
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fields=["is_active", "name"], name="commerce_product_active_name"
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),
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]
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def __str__(self):
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return f"{self.sku} — {self.name}"
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