from odoo import models, fields class SchoolCourseStudent(models.Model): _name = 'school.course.student' _description = 'Enrolled Student' application_id = fields.Many2one('school.application', string="Student", required=True) course_id = fields.Many2one('school.course', string='Course', ondelete='cascade') student_id = fields.Many2one('res.partner', string='Student') student_name = fields.Char(related='application_id.name', string="Student Name", store=True)