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95 lines
3.2 KiB
Python
95 lines
3.2 KiB
Python
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from decimal import Decimal
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from core.models import User
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class CurrencyField(models.DecimalField):
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"""
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This is a custom database field used for currency
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"""
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__metaclass__ = models.SubfieldBase
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def __init__(self, *args, **kwargs):
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kwargs['max_digits'] = 12
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kwargs['decimal_places'] = 2
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super(CurrencyField, self).__init__(*args, **kwargs)
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def to_python(self, value):
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try:
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return super(CurrencyField, self).to_python(value).quantize(Decimal("0.01"))
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except AttributeError:
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return None
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class Customer(models.Model):
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"""
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This class extends a user to make a customer. It adds some basic customers informations, such as the accound ID, and
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is used by other accounting classes as reference to the customer, rather than using User
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"""
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user = models.OneToOneField(User, primary_key=True)
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account_id = models.CharField(_('account id'), max_length=10, unique=True)
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class Meta:
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verbose_name = _('customer')
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verbose_name_plural = _('customers')
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def __str__(self):
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return self.user.username
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class ProductType(models.Model):
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"""
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This describes a product type
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Useful only for categorizing, changes are made at the product level
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"""
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name = models.CharField(_('name'), max_length=30)
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description = models.TextField(_('description'), null=True, blank=True)
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icon = models.ImageField(upload_to='products', null=True, blank=True)
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def __str__(self):
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return self.name
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class Product(models.Model):
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"""
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This describes a product, with all its related informations
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"""
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name = models.CharField(_('name'), max_length=30)
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description = models.TextField(_('description'), blank=True)
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product_type = models.ForeignKey(ProductType, related_name='products', null=True, blank=True)
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code = models.CharField(_('code'), max_length=10)
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purchase_price = CurrencyField(_('purchase price'))
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selling_price = CurrencyField(_('selling price'))
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special_selling_price = CurrencyField(_('special selling price'))
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icon = models.ImageField(upload_to='products', null=True, blank=True)
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def __str__(self):
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return self.name
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class GeneralJournal(models.Model):
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"""
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Class storing all the invoices for a period of time
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"""
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start_date = models.DateField(_('start date'))
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end_date = models.DateField(_('end date'), null=True, blank=True, default=None)
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name = models.CharField(_('name'), max_length=30)
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closed = models.BooleanField(_('is closed'), default=False)
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# When clubs are done: ForeignKey(Proprietary)
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def __str__(self):
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return self.name
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class GenericInvoice(models.Model):
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"""
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This class is a generic invoice, made to be extended with some special cases (eg: for the internal accounting, payment
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system, etc...)
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"""
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journal = models.ForeignKey(GeneralJournal, related_name="invoices", null=False)
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name = models.CharField(_('name'), max_length=100)
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def __str__(self):
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return self.journal.name+' - '+self.name
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# TODO: CountingInvoice in Counting app extending GenericInvoice
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# - ManyToMany Product
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