mirror of
https://github.com/welton89/RRBEC.git
synced 2026-04-05 13:35:42 +00:00
78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
from django.db import models
|
|
from django.contrib.auth.models import User
|
|
|
|
from categories.models import Categories
|
|
|
|
|
|
class UnitOfMeasure(models.Model):
|
|
id = models.AutoField(primary_key=True)
|
|
name = models.CharField(
|
|
max_length=50, unique=True, help_text="Ex: 'Unidade', 'Kg', 'Litro'"
|
|
)
|
|
abbreviation = models.CharField(
|
|
max_length=10, unique=True, help_text="Ex: 'un', 'kg', 'L'"
|
|
)
|
|
|
|
def __str__(self):
|
|
return self.abbreviation
|
|
|
|
|
|
# Create your models here.
|
|
class Product(models.Model):
|
|
id = models.AutoField(primary_key=True)
|
|
name = models.CharField(max_length=100)
|
|
description = models.TextField(null=True, blank=True)
|
|
image = models.ImageField(upload_to="products/%Y/%m/%d/", null=True, blank=True)
|
|
price = models.DecimalField(max_digits=10, decimal_places=2)
|
|
quantity = models.IntegerField(null=False, default=0)
|
|
category = models.ForeignKey(Categories, on_delete=models.CASCADE)
|
|
cuisine = models.BooleanField(default=False)
|
|
active = models.BooleanField(default=True)
|
|
unit_of_measure = models.ForeignKey(
|
|
UnitOfMeasure,
|
|
on_delete=models.SET_NULL, # Define como NULL se a unidade de medida for excluída
|
|
null=True,
|
|
blank=True,
|
|
help_text="Unidade de medida para este produto.",
|
|
)
|
|
|
|
# Campo de composição (mantido da resposta anterior)
|
|
components = models.ManyToManyField(
|
|
"self",
|
|
through="ProductComponent",
|
|
through_fields=("composite_product", "component_product"),
|
|
symmetrical=False,
|
|
related_name="is_component_of",
|
|
)
|
|
|
|
def __str__(self) -> str:
|
|
return f"{self.name}"
|
|
|
|
|
|
class ProductComponent(models.Model):
|
|
composite_product = models.ForeignKey(
|
|
Product,
|
|
on_delete=models.CASCADE,
|
|
related_name="composition_entries",
|
|
help_text="O produto que é composto por outros produtos.",
|
|
)
|
|
component_product = models.ForeignKey(
|
|
Product,
|
|
on_delete=models.CASCADE,
|
|
related_name="used_as_component_in",
|
|
help_text="Um produto que é componente de outro produto.",
|
|
)
|
|
quantity_required = models.PositiveIntegerField(
|
|
default=1,
|
|
help_text="Quantidade deste componente necessária para o produto composto.",
|
|
)
|
|
|
|
class Meta:
|
|
unique_together = ("composite_product", "component_product")
|
|
|
|
def __str__(self):
|
|
return (
|
|
f"{self.composite_product.name} requer "
|
|
f"{self.quantity_required} de {self.component_product.name}"
|
|
)
|