Sith/accounting/models.py

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from django.core.urlresolvers import reverse
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from django.db import models
from django.conf import settings
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from django.utils.translation import ugettext_lazy as _
from decimal import Decimal
from core.models import User
from club.models import Club
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class CurrencyField(models.DecimalField):
"""
This is a custom database field used for currency
"""
__metaclass__ = models.SubfieldBase
def __init__(self, *args, **kwargs):
kwargs['max_digits'] = 12
kwargs['decimal_places'] = 2
super(CurrencyField, self).__init__(*args, **kwargs)
def to_python(self, value):
try:
return super(CurrencyField, self).to_python(value).quantize(Decimal("0.01"))
except AttributeError:
return None
class Customer(models.Model):
"""
This class extends a user to make a customer. It adds some basic customers informations, such as the accound ID, and
is used by other accounting classes as reference to the customer, rather than using User
"""
user = models.OneToOneField(User, primary_key=True)
account_id = models.CharField(_('account id'), max_length=10, unique=True)
class Meta:
verbose_name = _('customer')
verbose_name_plural = _('customers')
def __str__(self):
return self.user.username
class ProductType(models.Model):
"""
This describes a product type
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Useful only for categorizing, changes are made at the product level for now
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"""
name = models.CharField(_('name'), max_length=30)
description = models.TextField(_('description'), null=True, blank=True)
icon = models.ImageField(upload_to='products', null=True, blank=True)
def __str__(self):
return self.name
class Product(models.Model):
"""
This describes a product, with all its related informations
"""
name = models.CharField(_('name'), max_length=30)
description = models.TextField(_('description'), blank=True)
product_type = models.ForeignKey(ProductType, related_name='products', null=True, blank=True)
code = models.CharField(_('code'), max_length=10)
purchase_price = CurrencyField(_('purchase price'))
selling_price = CurrencyField(_('selling price'))
special_selling_price = CurrencyField(_('special selling price'))
icon = models.ImageField(upload_to='products', null=True, blank=True)
def __str__(self):
return self.name
class BankAccount(models.Model):
name = models.CharField(_('name'), max_length=30)
rib = models.CharField(_('rib'), max_length=255, blank=True)
number = models.CharField(_('account number'), max_length=255, blank=True)
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def get_absolute_url(self):
return reverse('accounting:bank_details', kwargs={'b_account_id': self.id})
def __str__(self):
return self.name
class ClubAccount(models.Model):
name = models.CharField(_('name'), max_length=30)
club = models.OneToOneField(Club, related_name="club_accounts")
bank_account = models.ForeignKey(BankAccount, related_name="club_accounts")
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def get_absolute_url(self):
return reverse('accounting:club_details', kwargs={'c_account_id': self.id})
def __str__(self):
return self.name
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class GeneralJournal(models.Model):
"""
Class storing all the operations for a period of time
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"""
start_date = models.DateField(_('start date'))
end_date = models.DateField(_('end date'), null=True, blank=True, default=None)
name = models.CharField(_('name'), max_length=30)
closed = models.BooleanField(_('is closed'), default=False)
club_account = models.ForeignKey(ClubAccount, related_name="journals", null=False)
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def __str__(self):
return self.name
class AccountingType(models.Model):
"""
Class describing the accounting types.
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Thoses are numbers used in accounting to classify operations
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"""
code = models.CharField(_('code'), max_length=16) # TODO: add number validator
label = models.CharField(_('label'), max_length=60)
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movement_type = models.CharField(_('movement type'), choices=[('credit', 'Credit'), ('debit', 'Debit'), ('neutral', 'Neutral')], max_length=12)
class Operation(models.Model):
"""
An operation is a line in the journal, a debit or a credit
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"""
journal = models.ForeignKey(GeneralJournal, related_name="invoices", null=False)
date = models.DateField(_('date'))
remark = models.TextField(_('remark'), max_length=255)
mode = models.CharField(_('payment method'), max_length=255, choices=settings.SITH_ACCOUNTING_PAYMENT_METHOD)
cheque_number = models.IntegerField(_('cheque number'))
invoice = models.FileField(upload_to='invoices', null=True, blank=True)
done = models.BooleanField(_('is done'), default=False)
type = models.ForeignKey(AccountingType, related_name="operations")
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def __str__(self):
return self.journal.name+' - '+self.name