Ability to define custom computed properties on models

[lekhnath]

Describe the feature as you'd like to see it
Define computed property on Models

What do we currently have to do now?

class Product(Model):
    
    @property
     def amount_total(self):
        return self.rate * self.qty

Additional context
This is just an example but it would be nice if we could define custom properties on model and also select these
property dynamically using the select method. I've tried using __cast_map__ I could not manage to get the
desired result. It is not selectable and the value returned from get method of Caster class also did not reflect in result.

Demo implementation of __cast_map__:

from masoniteorm.models import Model

class UsernameCaster:
    def get(self, value):
        return value.split('@')[0]

    def set(self, value):
        pass

class User(Model):
    __selects__ = ['id', 'email as username']
    __cast_map__ = {
        "username": UsernameCaster,
    }

• Is this a breaking change? Not Sure

[josephmancuso]

i think you're referring to mutators and accessors. if not ill reopen

https://orm.masoniteproject.com/models#accessors-and-mutators-getter-and-setter

[josephmancuso]

if you want to seect this you would have to use the add_select clause for the query builder. if you want the logic in the model you could use a scope and add it there