Odoo 14: Add a section functionality in tree view

Question

I need add a section functionality like sales > quotation view has, in one of my tree views. .

Code of my view is something like this:

<record id="view_qualification_form_inh" model="ir.ui.view">
    <field name="name">hr.applicant.form</field>
    <field name="model">hr.applicant</field>
    <field name="inherit_id" ref="hr_recruitment.hr_applicant_view_form" />
    <field name="arch" type="xml">

        <xpath expr="//field[@name = 'description']" position="after">

            <notebook>
                <page string="Qualification">
                    <field name="qualification_lines">
                        <tree editable="bottom">
                            <control>
                                <create name="add_line_control" string="Add a line"/>
                                <create name="add_section_control" string="Add a section"
                                        context="{'default_display_type': 'line_section'}"/>
                            </control>
                            <field name="qualification_type_id"/>
                            <field name="qualification_type_line_id" domain="[('qualification_type_id','=',qualification_type_id)]"/>
                            <field name="score" />

                        </tree>
                    </field>
                    <group class="oe_subtotal_footer">
                        <field name="avg_score" class="oe_subtotal_footer_separator"/>
                    </group>
                </page>
            </notebook>
        </xpath>

    </field>
</record>

Code of my model:

class HrApplicant(models.Model):
    _inherit = 'hr.applicant'

     qualification_lines = fields.One2many('hr.applicant.qualification', 'qualification_data',)
     avg_score = fields.Float(compute='compute_score_average',store=True,index=True, string='Average Score')

    display_type = fields.Selection([
    ('line_section', "Section"),
    ('line_note', "Note")], default=False, help="Technical field for UX purpose.")

class Qualification(models.Model):
     _name = 'hr.applicant.qualification'
     _description = 'Applicant Qualification'

     qualification_data = fields.Many2one('hr.applicant', string='Qualification')

     qualification_type_id = fields.Many2one('hr.applicant.qualification.rule', string='Qualification Type')
     qualification_type_line_id = fields.Many2one(related='qualification_type_id.qualification_type_line_id')
     score = fields.Float(related='qualification_type_line_id.score')

The thing is, I got a add a section option but it is working same like default "add a line".

I know it has lot of things to do with python code, even tried to get it from sales' addon but it has very complex structure. I am a beginner, so if anyone can help me out with code or at-least steps for it.

Answer 1

You need to set the qualification_lines widget attribute to section_and_note_one2many and define the display_type in the applicant qualification model instead of the applicant model, it will be used to check if you need to add a section (help: Technical field for UX purpose).

In the following example the section text will be stored in the name field:

View definition:

<field name="qualification_lines"
       widget="section_and_note_one2many">
    <tree editable="bottom">
        <control>
            <create name="add_line_control" string="Add a line"/>
            <create name="add_section_control" string="Add a section"
                    context="{'default_display_type': 'line_section'}"/>
        </control>
        <field name="name" widget="section_and_note_text" optional="show"/>
        <field name="display_type" invisible="1"/>
        <field name="score"/>
    </tree>
</field>  

Model definition:

class Qualification(models.Model):
    _name = 'hr.applicant.qualification'
    _description = 'Applicant Qualification'

    name = fields.Char(required=True)
    display_type = fields.Selection([
        ('line_section', "Section"),
        ('line_note', "Note")], default=False, help="Technical field for UX purpose.")

    qualification_data = fields.Many2one('hr.applicant', string='Qualification')