Using session key of Django session as foreign key

Question

Aryan Kumar · Answer

Sure, you can use the session key of Django as a foreign key by creating a new model that inherits from the
django.contrib.sessions.models.Session model and adding a foreign key to the
user model.
The following code shows how to do this:
Python
from django.contrib.sessions.models import Session
from django.db import models
class SessionUser(models.Model):
    session_key = models.ForeignKey(Session, on_delete=models.CASCADE)
    user = models.ForeignKey('auth.User', on_delete=models.CASCADE)
This code creates a new model called SessionUser that inherits from the
django.contrib.sessions.models.Session model. The session_key field is a foreign key to the
Session model, and the user field is a foreign key to the
auth.User model.
To use the session_key field as a foreign key, you would need to create a new model that inherits from the
SessionUser model. For example, the following code shows how to create a new model called
Order that inherits from the SessionUser model:
Python
from django.db import models
class Order(SessionUser):
    order_number = models.CharField(malength=100)
    total_price = models.DecimalField(madigits=10, decimal_places=2)
This code creates a new model called Order that inherits from the
SessionUser model. The order_number field is a string field that stores the order number, and the
total_price field is a decimal field that stores the total price of the order.
You can then use the session_key field to query the Order model. For example, the following code shows how to query the
Order model for all orders that were placed by the user with the session key
1234567890:
Python
from django.db.models import Q
orders = Order.objects.filter(session_key=1234567890)
This code will return a list of all orders that were placed by the user with the session key
1234567890.

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Using session key of Django session as foreign key

Sandra Emily

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