How to add a calculated field to a Django model

Question

I have a simple Employee model that includes firstname, lastname and middlename fields.

On the admin side and li

Answer 1

In this case if you are only going to use the field for representation in admin site and such issues, you might better to consider overriding str() or unicode() method of the class as it is mentioned in django documentation here:

class Employee(models.Model):
    # fields definitions
    def __str__(self):
        return self.lastname + ' ,' + self.firstname + ' ' + self.middlename