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23 lines
756 B
Python
23 lines
756 B
Python
from django.db import models
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class Product(models.Model):
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name = models.CharField(max_length=255)
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color = models.CharField(max_length=32, null=True)
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price = models.IntegerField(null=True)
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discounted_price = models.IntegerField(null=True)
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class Meta:
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constraints = [
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models.CheckConstraint(
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check=models.Q(price__gt=models.F('discounted_price')),
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name='price_gt_discounted_price',
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),
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models.UniqueConstraint(fields=['name', 'color'], name='name_color_uniq'),
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models.UniqueConstraint(
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fields=['name'],
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name='name_without_color_uniq',
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condition=models.Q(color__isnull=True),
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),
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]
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