How to access a field of another model in a button with the attrs attribute?

Question

How do i access the field product_id.product_tmpl_id.type from the sale.order.line model.

I have the following button in the xml view:

button name="print_report" string="Print" type="object" icon="gtk-print" attrs="{'invisible':[('product_id.product_tmpl_id.type', '!=', 'product')]}"/>.

With this statement , Odoo shows me the following error:

Uncaught Error: Campo desconocido product_id.product_tmpl_id.type en el dominio [["product_id.product_tmpl_id.type","!=","product"]]

I appreciate your help. Thank you

Answer 1

Are you sure that field product_id is declared into the view of the button? If so, and did not work yet, then you can try to create a related field into sale.order.line

type = fields.Selection(related='product_id.product_tmpl_id.type')

and use it into domain

[('type', '!=', 'product')]

(remember to put type field, even invisible, inside the view)