Project/Issue: portal users: public or portal and following ['|', ('project_id.privacy_visibility', '=', 'public'), '&', ('project_id.privacy_visibility', 'in', ['portal', 'followers']), '|', ('message_follower_ids','in', [user.partner_id.id]), ('user_id', '=', user.id), ] Project/Issue: employees: public, portal, employee or following or assigned ['|', ('user_id', '=', user.id), '|', ('project_id.privacy_visibility', 'in', ['public', 'portal', 'employees']), '&', ('project_id.privacy_visibility', '=', 'followers'), ('message_follower_ids', 'in', [user.partner_id.id]), ]