Assumption: fields.related is needed to display the fields of two related tables in the same view.
one2many, many2one and many2many can be specified in Field Type in Settings>Technical>Database Structure>Models Create: Fields
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Assumption: fields.related is needed to display the fields of two related tables in the same view.
one2many, many2one and many2many can be specified in Field Type in Settings>Technical>Database Structure>Models Create: Fields
Pulled from the documentation. Here are the relevant part:
A special case of computed fields are related (proxy) fields, which provide the value of a sub-field on the current record. They are defined by setting the related parameter and like regular computed fields they can be stored:
nickname = fields.Char(related='user_id.partner_id.name', store=True)