Hello @All,

need help to how to implement section in my custom module.

after adding section and note can't do any action more. Can't save the form view.

here is my code:

Model:
class SodistraAttachementPrestataireLine(models.Model):
    _name = "attachement_prestataire.principale.line"

    name = fields.Char("Description")
    product_id = fields.Many2one("product.product", "Désignation")
    product_uom = fields.Many2one('uom.uom', string='Unité')
    quantity = fields.Float("Qté")
    quantity_consomme = fields.Float("Qté consommée")
    price_unit = fields.Float("Prix unitaire")
    montant = fields.Monetary("Montant", store=True, compute="_get_montant")
    currency_id = fields.Many2one('res.currency', store=True, string='Currency',
                                  default=lambda self: self.env.user.company_id.currency_id.id)
    attachement_prestataire_id = fields.Many2one("attachement_prestataire.principale")
    sequence = fields.Integer(default=10)
    display_type = fields.Selection([
        ('line_section', 'Section'),
        ('line_note', 'Note'),
    ], default=False, help="Technical field for UX purpose.")

    @api.depends('product_id')
    @api.onchange('product_id')
    def _get_name(self):
        for line in self:
            line.name = line.product_id.name

    @api.depends('quantity', 'price_unit')
    @api.onchange('quantity', 'price_unit')
    def _get_montant(self):
        for line in self:
            line.montant = line.price_unit * line.quantity

    @api.model_create_multi
    def create(self, vals_list):
        print(vals_list)
        for vals in vals_list:
            if vals.get('display_type', self.default_get(['display_type'])['display_type']):
                vals.update(product_id=False, quantity=0, product_uom=False)
        return super().create(vals_list)

    def write(self, values):
        if 'display_type' in values and self.filtered(lambda line: line.display_type != values.get('display_type')):
            raise UserError(_("You cannot change the type of a sale quote line. Instead you should delete the current line and create a new line of the proper type."))
        return super().write(values)

View:

<field name="line_ids" widget="section_and_note_one2many">
    <tree editable="bottom" string="Ligne attachement" context="{'default_display_type': False}" default_order="sequence, id">
        <control>
            <create name="add_line_control" string="Ajouter une ligne"/>
            <create name="add_section_control" string="Add une section" context="{'default_display_type': 'line_section'}"/>
            <create name="add_note_control" string="Add a note" context="{'default_display_type': 'line_note'}"/>
        </control>
        <field name="sequence" widget="handle"/>
        <field name="product_id" required="1"/>
        <field name="display_type" force_save="1" invisible="1"/>
        <field name="name" widget="section_and_note_text"/>
        <field name="product_uom"/>
        <field name="quantity"/>
        <field name="quantity_consomme" readonly="1"/>
        <field name="price_unit"/>
        <field name="montant"/>
        <field name="attachement_prestataire_id" invisible="1"/>
    </tree>
</field>