Hello, I am trying to set a readonly attribute to True or False for a field on an xml view if a many2one field has a certain value for that record using the domain.

Example:

     <field name='some_field' attrs=" { 'readonly': [('product_id.active', '=', False )] }" />

The problem is I get an error saying:

     Error: Unknown field product_id.active in domain [["product_id.active","=",False]]  

Is there a way to find what the related value is for a many2one field, and set another fields attributes based on that? Thank you