odoo_18_Education_management/models/school_class.py

from odoo import models, fields, api

class SchoolClass(models.Model):
    _name = 'school.class'
    _description = 'Class'

    related_subject_ids = fields.One2many('school.subject', 'class_name', string='Subjects')
    name = fields.Selection([
        ('Class 1', 'Class 1'),
        ('Class 2', 'Class 2'),
        ('Class 3', 'Class 3'),
        ('Class 4', 'Class 4'),
        ('Class 5', 'Class 5'),
        ('Class 6', 'Class 6'),
        ('Class 7', 'Class 7'),
        ('Class 8', 'Class 8'),
        ('Class 9', 'Class 9'),
        ('Class 10', 'Class 10'),
        ('Class 11', 'Class 11'),
        ('Class 12', 'Class 12'),
    ], string="Class Name", required=True)

    subject_ids = fields.Many2many('school.subject', string='Subjects')
    school = fields.Many2one('res.company', string="School", default=lambda self: self.env.company)
    is_optional = fields.Boolean(string='Optional')
    class_teacher = fields.Many2one('res.users', string='Class Teacher')

    @api.onchange('name')
    def _onchange_name_set_subjects(self):
        if not self.name:
            self.subject_ids = False
            return

        subject_map = {
            'Class 1': ['math', 'english', 'science', 'mil'],
            'Class 2': ['math', 'english', 'science', 'drawing', 'mil'],
            'Class 3': ['math', 'english', 'science', 'odia', 'drawing', 'english_grammar'],
            'Class 4': ['math', 'english', 'science', 'odia', 'drawing', 'english_grammar'],
            'Class 5': ['math', 'english', 'science', 'odia', 'history', 'drawing', 'english_grammar'],
            'Class 6': ['math', 'english', 'science', 'geography', 'mil', 'english_grammar'],
            'Class 7': ['math', 'english', 'science', 'political_science', 'mil', 'english_grammar', 'history', 'geography'],
            'Class 8': ['math', 'english', 'science', 'political_science', 'mil', 'english_grammar', 'history', 'geography'],
            'Class 9': ['math', 'english', 'physical_science', 'life_science', 'english_grammar', 'economic_science', 'history', 'geography'],
            'Class 10': ['math', 'english', 'physical_science', 'life_science', 'english_grammar', 'economic_science', 'history', 'geography'],
            'Class 11': ['physics', 'chemistry', 'math', 'biology', 'english', 'english_grammar', 'computer_science', 'mil', 'economic_science'],
            'Class 12': ['physics', 'chemistry', 'math', 'biology', 'computer_science', 'english_grammar', 'english', 'mil', 'economic_science'],
        }

        subject_codes = subject_map.get(self.name, [])
        subjects = self.env['school.subject'].search([('name', 'in', subject_codes)])
        self.subject_ids = [(6, 0, subjects.ids)]  # This sets all