You could need an extra class for this but it should work:
class Topping(models.Model):
# ...
class Pizza(models.Model):
# ...
toppings = models.ManyToManyField(Topping)
class PizzaToppings(model.Model):
pizza = models.ForeignKey(Pizza, help_text='Toppings to go on
Pizza: num in admin is how many will show up in Pizza',
edit_inline=models.TABULAR, num_in_admin=3)
topping = models.ManyToOne(Topping)
#...
some related material:
http://www.djangoproject.com/documentation/model-api/#many-to-one-relationships
Hope that helps,
Mn
On May 31, 11:48 am, Gio <[EMAIL PROTECTED]> wrote:
> Hi,
> I searched about this subject and found only a few very old posts, so
> maybe there is a better solution now.
>
> As you may guess the model I'd like to code is similar to the Pizza -
> Toppings you know from the "Creating Models" documentation:
>
> class Topping(models.Model):
> # ...
>
> class Pizza(models.Model):
> # ...
> toppings = models.ManyToManyField(Topping)
>
> And what if I need to say that I can have two or three times the same
> topping on my pizza? Something like twice mozzarella cheese and 3
> times green olives topping?
>
> I though about an intermediary class and indeed this is the same
> solution found in those old posts mentioned before:
>
> class Topping(models.Model):
> # ...
>
> class ToppingAndQuantity(models.Model):
> amount = models.IntegerField()
> topping = models.ForeignKey(Topping)
>
> class Pizza(models.Model):
> # ...
> toppings = models.ManyToManyField(ToppingAndQuantity)
>
> I think it's ugly.
> Can you suggest me a better solution?
> It's that intermediary class really needed?
>
> Thank you,
> Giovanni.
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