Hello,

I've created a model in a custom module. This model represents a tree structure. It's working quite good but I still have a bug that I can't figure out.

When the user changes the name, the complete_order field of its children is wrongly calculated.

For exemple the item with complete_name "Root Element / Child 1 / Child 1.1 / ... / Child n /  Last child" gets its complete_order like "False / Last child" if the name of the Child n is modified.

I had the same problem for complete_name that I solved by setting the stored property to false. As complete_order is used for the ordering of my items, I can't do the same and it looks like it has to be stored in db.

Any help appreciated !

Here is the code for my model :

# -*- coding: utf-8 -*-

from odoo import models, fields, api
from odoo.exceptions import ValidationError

class treeitem(models.Model):
    _name = "mymodule.treeitem"
    _description = "TreeItem"
    _parent_name = "parent_id"
    _parent_store = True
    _rec_name = 'complete_name'
    _order = 'complete_order'

    name = fields.Char('Name', index=True, required=True, translate=True)
    complete_name = fields.Char(
        'Complete Name', compute='_compute_complete_name',
        store=False)
    complete_order = fields.Char(
        'Complete Order', compute='_compute_complete_order',
        store=True)

    parent_id = fields.Many2one('mymodule.treeitem', 'Parent Item', index=True, ondelete='cascade')
    parent_path = fields.Char(index=True)
    child_id = fields.One2many('mymodule.treeitem', 'parent_id', 'Child Items')
    order = fields.Integer(default=0)

    information = fields.Text()

    @api.depends('name', 'parent_id.complete_name')
    def _compute_complete_name(self):
        for item in self:
            if item.parent_id:
                item.complete_name = '%s / %s' % (item.parent_id.complete_name, item.name)
            else:
                item.complete_name = item.name

    @api.depends('name', 'order', 'parent_id.complete_order')
    def _compute_complete_order(self):
        for item in self:
            if item.parent_id:
                item.complete_order = '%s / %04d-%s' % (item.parent_id.complete_order, item.order, item.name)
            else:
                item.complete_order = '%04d-%s' % (item.order, item.name)

    @api.constrains('parent_id')
    def _check_item_recursion(self):
        if not self._check_recursion():
            raise ValidationError(_('You cannot create recursive categories.'))
        return True

Thank you !