33 lines
1.2 KiB
Python
33 lines
1.2 KiB
Python
from django.db.models import Model, ForeignKey, CASCADE, TextField, PositiveIntegerField, BooleanField, DateField
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from django.utils import timezone
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from core.models.profiles import ClientProfile
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from core.models.brands import Brand
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from core.fields.base import LongCharField
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from core.fields.numbers import CostField
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from core.models.local import Currency
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from core.mixins.billable import RecurMixin
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from dateutil.relativedelta import relativedelta
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from polymorphic.models import PolymorphicModel
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class BaseBillable(PolymorphicModel):
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name = LongCharField()
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description = TextField(blank=True, null=True)
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amount = CostField()
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count = PositiveIntegerField(default=1)
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currency = ForeignKey(Currency, on_delete=CASCADE)
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taxable = BooleanField()
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client = ForeignKey(ClientProfile, on_delete=CASCADE)
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brand = ForeignKey(Brand, on_delete=CASCADE)
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@property
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def next_invoicing(self):
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raise NotImplementedError(f"{type(self)} does not implement property next_invoicing!")
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@property
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def can_invoice(self):
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raise NotImplementedError(f"{type(self)} does not implement property can_invoice!")
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class Billable(RecurMixin, BaseBillable):
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pass
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