Non-database field in Django model

Question

Is it possible to have a field in a Django model which does not get stored in the database.
For example:

class Book(models.Model):
    title = models.CharFie         


        

Answer 1

To make it an instance variable (so each instance gets its own copy), you'll want to do this

class Book(models.Model):
    title = models.CharField(max_length=75)
    #etc

    def __init__(self, *args, **kwargs):
        super(Foo, self).__init__(*args, **kwargs)
        self.editable = False

Each Book will now have an editable that wont be persisted to the database