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40 lines
890 B
Python
40 lines
890 B
Python
import decimal
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from django.db import models
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class Cash(decimal.Decimal):
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currency = 'USD'
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def __str__(self):
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s = super().__str__(self)
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return '%s %s' % (s, self.currency)
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class CashField(models.DecimalField):
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def __init__(self, **kwargs):
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kwargs['max_digits'] = 20
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kwargs['decimal_places'] = 2
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super().__init__(**kwargs)
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def from_db_value(self, value, expression, connection):
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cash = Cash(value)
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cash.vendor = connection.vendor
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return cash
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class CashModel(models.Model):
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cash = CashField()
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def __str__(self):
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return str(self.cash)
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class CashFieldDeprecated(CashField):
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def from_db_value(self, value, expression, connection, context):
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return super().from_db_value(value, expression, connection)
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class CashModelDeprecated(models.Model):
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cash = CashFieldDeprecated()
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