from odoo import fields, models


class ResPartner(models.Model):
    _inherit = "res.partner"

    is_guardian = fields.Boolean(string="Is Guardian", default=False, index=True)
    guardian_student_ids = fields.One2many(
        "res.partner",
        "guardian_id",
        string="Primary Students",
        domain=[("is_student", "=", True)],
    )
    additional_student_ids = fields.Many2many(
        "res.partner",
        "student_guardian_rel",
        "guardian_id",
        "student_id",
        string="Additional Students",
        domain=[("is_student", "=", True)],
    )

    guardian_id = fields.Many2one(
        domain="[('is_guardian', '=', True), ('is_student', '=', False)]",
    )
    guardian_ids = fields.Many2many(
        domain="[('is_guardian', '=', True), ('is_student', '=', False)]",
    )