110 lines
3.1 KiB
Python
110 lines
3.1 KiB
Python
from django.db import models
|
|
from apps.core.models import BaseModel
|
|
|
|
|
|
# Create your models here.
|
|
|
|
class ReferenceProduct(BaseModel):
|
|
""" Reference product - like: rice """
|
|
|
|
name = models.CharField(max_length=250, default='empty') # noqa
|
|
type_choices = (
|
|
('F', 'Free'), # free product
|
|
('G', 'Governmental') # government product
|
|
)
|
|
type = models.CharField(max_length=3, choices=type_choices)
|
|
img = models.CharField(max_length=100, default='empty')
|
|
|
|
def __str__(self):
|
|
return f'name: {self.name} - type: {self.type}'
|
|
|
|
def save(self, *args, **kwargs):
|
|
super(ReferenceProduct, self).save(*args, **kwargs)
|
|
|
|
|
|
class Product(BaseModel):
|
|
""" Child of reference product - like: brown rice """
|
|
name = models.CharField(max_length=250, default='empty') # noqa
|
|
type_choices = (
|
|
('F', 'Free'), # free product
|
|
('G', 'Governmental') #
|
|
)
|
|
type = models.CharField(max_length=3, choices=type_choices)
|
|
img = models.CharField(max_length=100, default='empty')
|
|
reference = models.ForeignKey(
|
|
ReferenceProduct,
|
|
on_delete=models.CASCADE,
|
|
related_name='reference_product',
|
|
null=True
|
|
)
|
|
|
|
def __str__(self):
|
|
return f'name: {self.name} - type: {self.type}'
|
|
|
|
def save(self, *args, **kwargs):
|
|
super(Product, self).save(*args, **kwargs)
|
|
|
|
|
|
class Attribute(BaseModel):
|
|
"""
|
|
every reference product have multiple attributes
|
|
"""
|
|
reference_product = models.ForeignKey(
|
|
ReferenceProduct,
|
|
on_delete=models.CASCADE,
|
|
related_name='reference_attribute',
|
|
null=True
|
|
)
|
|
name = models.CharField(max_length=100, default='empty')
|
|
type = models.CharField(
|
|
max_length=255,
|
|
default='empty',
|
|
help_text='type of attribute like: calculate product by kilogram'
|
|
)
|
|
|
|
def __str__(self):
|
|
return f'{self.reference_product.name} - {self.name}'
|
|
|
|
def save(self, *args, **kwargs):
|
|
return super(Attribute, self).save(*args, **kwargs)
|
|
|
|
|
|
class AttributeValue(BaseModel):
|
|
"""
|
|
every child product should have attribute value for
|
|
reference product attribute
|
|
"""
|
|
product = models.ForeignKey(
|
|
Product,
|
|
on_delete=models.CASCADE,
|
|
related_name='product_attribute_value',
|
|
null=True
|
|
)
|
|
attribute = models.ForeignKey(
|
|
Attribute,
|
|
on_delete=models.CASCADE,
|
|
related_name='attribute_value'
|
|
)
|
|
value = models.IntegerField(default=0)
|
|
|
|
def __str__(self):
|
|
return f'{self.product.name} - {self.attribute.name} - {self.value}'
|
|
|
|
def save(self, *args, **kwargs):
|
|
return super(AttributeValue, self).save(*args, **kwargs)
|
|
|
|
|
|
class SaleUnit(BaseModel):
|
|
product = models.ForeignKey(
|
|
ReferenceProduct,
|
|
on_delete=models.CASCADE,
|
|
related_name='sale_unit',
|
|
null=True
|
|
)
|
|
unit = models.CharField(max_length=255, null=True)
|
|
variation_coefficient = models.CharField(max_length=255, null=True)
|
|
required = models.BooleanField(default=False)
|
|
|
|
def __str__(self):
|
|
return f'{self.product} - {self.unit} - {self.variation_coefficient}'
|