from django.db import models from django.utils.translation import ugettext_lazy as _ from django.core.urlresolvers import reverse from counter.models import Counter, ProductType class Stock(models.Model): """ The Stock class, this one is used to know how many products are left for a specific counter """ name = models.CharField(_('name'), max_length=64) counter = models.OneToOneField(Counter, verbose_name=_('counter'), related_name='stock') def __str__(self): return "%s (%s)" % (self.name, self.counter) def get_absolute_url(self): return reverse('stock:list') class StockItem(models.Model): """ The StockItem class, element of the stock """ name = models.CharField(_('name'), max_length=64) unit_quantity = models.IntegerField(_('unit quantity'), default=0, help_text='number of beer in one crate (equal one for barrels)') effective_quantity = models.IntegerField(_('effective quantity'), default=0, help_text='total number of bottle/barrel') type = models.ForeignKey(ProductType, related_name="stockItem_type", verbose_name=_("type"), null=True, blank=True, on_delete=models.SET_NULL) stock_owner = models.ForeignKey(Stock, related_name="stock_owner") def __str__(self): return "%s (%s)" % (self.name, self.stock_owner)