title: retrieving the value of a field from another model in Odoo
body: <p>please I would like to know how I can get the value of a field from another model in Odoo 12. I have a contact class and another class where I want to get the phone number of the contact class and when I use the many2one relationship it brings me the email addresses and not the phone number. I specify any time that I inherited the contact class from Odoo and I added the telephone field in this class</p>