How do I make an auto increment integer field in Django?

Question

I am making an Order model for a shopping cart and I need to make a field that auto increments when the order is made:

class Order(models.Model)         


        

Answer 1

You can create an autofield. Here is the documentation for the same

Please remember Django won't allow to have more than one AutoField in a model, In your model you already have one for your primary key (which is default). So you'll have to override model's save method and will probably fetch the last inserted record from the table and accordingly increment the counter and add the new record.

Please make that code thread safe because in case of multiple requests you might end up trying to insert same value for different new records.