from odoo import models, fields, api

class EducationStudent(models.Model):
    _inherit = 'education.student'

    exam_result_ids = fields.One2many('education.exam.result', 'student_id', string='Exam Results')
    exam_result_count = fields.Integer(compute='_compute_exam_result_count')

    @api.depends('exam_result_ids')
    def _compute_exam_result_count(self):
        for student in self:
            student.exam_result_count = len(student.exam_result_ids)

    def action_view_exam_results(self):
        self.ensure_one()
        return {
            'name': 'Exam Results',
            'type': 'ir.actions.act_window',
            'res_model': 'education.exam.result',
            'view_mode': 'tree,form',
            'domain': [('student_id', '=', self.id)],
            'context': {'default_student_id': self.id},
        }