[14.0] Tree attributes edit/create/delete behaving weird

[treylade]

Impacted versions:

Odoo 14.0-20210701

Steps to reproduce:

• create many2many field "active_engagements"

active_engagements = fields.Many2many(
     comodel_name='swaf.hr.engagement',
     relation='swaf_hr_process_change_engagement_role_wiz_active_engagements')

• expose field in wizard view as tree

<field name="active_engagements" colspan="4" nolabel="1">
        <tree default_order="begin_date ASC" edit="true" create="false" delete="false" decoration-success="status == 'aktiv'" decoration-warning="status == 'pausiert'">
                <field name="program" readonly="True" />
                <field name="program_department" readonly="True" />
                <field name="status" readonly="True" />
                <field name="is_program_vereint" invisible="True" />
                <field name="status_pausiert_until" readonly="True" />
                <field name="main_role" readonly="True" />
                <field name="additional_roles" readonly="True" attrs="{'invisible':[('is_program_vereint', '=', True)]}" widget="many2many_tags" />
                <field name="begin_date" readonly="True" />
                <field name="end_date" readonly="True" />
                <field name="end_switch" widget="boolean_toggle" />
        </tree>
</field>

Current behavior:

• attributes create and delete don't have any effect, a new entry is still addable and entries are deletable
• I can edit the only non readonly field "end_switch", as expected

Expected behavior:

• I expect only to be able to edit "end_switch", no create, no delete with these attributes set
• I remember that this was exactly the behaviour in the past

Video/Screenshot link (optional):

Support ticket number submitted via odoo.com/help (optional):

[pedrobaeza]

Such attributes don't apply over the m2m dialog. They are intended for direct tree views.

I let this to see if Odoo considers that this behavior should be added or not.

[treylade]

Thank you for your quick response.
That would be very helpful in many cases! Please consider this request.

[Yenthe666]

@rco-odoo @Feyensv maybe one of you can give the final feedback here?

[pedrobaeza]

This is something of web client, not ORM.