Question

I have something like this:

class Basket(models.Model):
    owner = models.ForeignKey(User, related_name='user_basket', verbose_name='Owner')
    name = models.CharField("Basket_Name", max_length=30)
    products = models.ManyToManyField('Product', through='BasketProduct', blank=True, null=True)

class BasketProduct(models.Model):
    product = models.ForeignKey('Product')
    basket = models.ForeignKey('Basket')
    quantity = models.IntegerField()

I try get all products from user Basket and create with their price and name string in the form of “Notebook – 2, PC – 5, Phone – 1”

My try:

user = request.user
b = Basket.objects.filter(owner=user)
bp = BasketProduct.objects.filter(basket=b)

for a in bp:
    a = '%s - %s' % (a.product, a.quantity)
    print a

This return something like this in shell:

[06/Oct/2012 19:44:41] "GET /list/ HTTP/1.1" 200 0
PC - 3 #single object
Notebook - 1 #second single object

I need: string = “PC – 3, Notebook – 1”

Please help

Answer 1

You can do the first three statements you are already doing. Then join the array of intermediate results returned by looping over the queryset resulting from the first three statements:

', '.join(['%s - %s' % (a.product, a.quantity) for a in bp])