Unique Names for Product Variants

[jt93]

Hi,
how could I modify the Product class such that I can set an arbitrary name without it getting named by its template?

[pokoli (Sergi Almacellas Abellana)]

Yes, you can! All product fields that are defined on the template are function fields.
You can override its getter and setter to use a diferent value than the one from the template.

[jt93]

Thanks. I tried the approach below, but I think I am still missing something, as it does not work.

class Product(metaclass=PoolMeta):
    __name__ = 'product.product'

    @classmethod
    def set_name(cls, instances, name, value):
        for instance in instances:
            setattr(instance, name, value)

For context: I want to be able to just fill in the name field from the client and do something like this with proteus:

product = Product(template=template)
product.name = "some_different_name"
product.save()

[ced (Cédric Krier)]

You can redefine any field from the template on the product but be aware of Not possible to redefine product field (#10322) · Issues · Tryton / Tryton · GitLab

But from your example, I do not understand what you try to achieve.

[jt93]

I basically just want to completely decouple the template name and the variant name, because of our internal naming schemes.

I tried the approach from the above link by extending the setup method with:

class Product(metaclass=PoolMeta):
    __name__ = 'product.product'

    @classmethod
    def __setup__(cls):
        super(Product, cls).__setup__()
        field = getattr(cls, 'name')
        if isinstance(field, fields.Function):
            field = deepcopy(field._field)
        field.readonly = False
        setattr(cls, 'name', field)

but now I get an error that the field is missing:

/database.py", line 71, in execute
cursor.execute(self, sql, args)
psycopg2.errors.UndefinedColumn: column a.name does not exist
LINE 1: SELECT “a”.“attributes” AS “attributes”, “a”.“name” AS "name…

[ced (Cédric Krier)]

As you add a new column to the table, you must update the database.

[jt93]

Thank you! Everything works now