k4ever/k4ever/buyable/models.py

from django.db import models
from django.contrib.auth.models import User
import datetime

# Create your models here.
class BuyableType(models.Model):
	name = models.CharField(max_length=100)
	
	def __unicode__(self):
		return self.name


class Buyable(models.Model):
	name = models.CharField(max_length=100)
	price = models.FloatField()
	image = models.ImageField(upload_to='img/buyable/')
	deposit = models.FloatField()
	description = models.TextField()
	buyableType = models.ManyToManyField(BuyableType)
	
	def createPurchase(self, isDeposit=False):
		p = Purchase()
		if isDeposit:
			p.price = self.deposit
		else:
			p.price = self.price
		p.dateTime = datetime.datetime.now()
		p.buyable = self
		
		return p
	
	def __unicode__(self):
		return "%s (%s EUR/%s Pfand)" % (self.name, self.price, self.deposit)

class Order(models.Model):
	user = models.ForeignKey(User)
	price = models.FloatField()
	dateTime = models.DateTimeField()

	def create(self, user=None):
		models.Model.__init__(self)
		self.price = 0.0
		self.dateTime = datetime.datetime.now()
		if user:
			self.user = user
	
	def addItems(self, items):
		for item in items:
			self.purchase.add(item)
			self.price += item.price
	
	def updatePrice(self):
		self.price = 0.0
		for item in self.purchase_set.all():
			self.price += item.price
	
	def __unicode__(self):
		return "Price %s, User %s" % (self.price, self.user)

class Purchase(models.Model):
	order = models.ForeignKey(Order)
	price = models.FloatField()
	isDeposit = models.BooleanField()
	buyable = models.ForeignKey(Buyable)

	@staticmethod
	def create(order, buyable, isDeposit=False):
		p = Purchase()
		p.order = order
		if isDeposit:
			p.price = buyable.deposit
		else:
			p.price = buyable.price
		p.dateTime = datetime.datetime.now()
		p.buyable = buyable
		
		return p

	def __unicode__(self):
		return "%s%s, %s" % (self.buyable.name, self.isDeposit and " (deposit)" or "", self.price)
	
#	def save(self, *args, **kwargs):
#		profile = self.user.get_profile()
#		if self.id == None:
#			# new item, get it!
#			profile.balance -= self.price
#			profile.save()
#		super(Purchase, self).save(*args, **kwargs)