[Answered ]-Understand models relationship . Its python, Django my q is ideologic

2👍

You can use the through model that you get while using ManyToMany fields

class Order(models.Model):
    items_in_order=models.ManyToManyField('Item', through='Quantity')

class Item(models.Mode):
    name=models.Charfield()
    price=models.DecimalField()

class Quantity(models.Model):
    quantity = models.IntegerField()
    order = models.ForeignKey('Order')
    item = models.ForeignKey('Item')

Documentation on extra fields on ManyToMany

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