Field.type converted to method that casts the value when set

[Jaymon]

It would be nice to have something like this:

class Field(BaseField):
    def type(self, val):
        if val is None: return val

        val_type = self.instance_type
        if issubclass(val_type, (int, float, bool)):
            val = val_type(val)

        return val

    def fset(self, orm, val):
        return self.type(val)

    def iquery(self, query, val):
        return self.type(val)

fset should get called after iget is called when pulling from the db, so I think that would cover all bases and make sure that the values are the correct type, this could be overridden in a project to allow customization.

You can't pass the orm to it though because iquery uses a Query instance instead of an Orm instance.