Hello,.

I'm trying to create a new module based on "res_partner" adding a new field "is a supplier" ( boolean).
here's my code (both model and view) :

models.py : 

from odoo import models, fields, api

class ResPatnerAmeliore(models.Model):

_inherit = 'res.partner'

_name = 'res_partner_amelioration'

announcer = fields.Boolean(string='Est un annoceur :')

View code : .

<odoo>

  <data>

    <record id="view_partner_inherit" model="ir.ui.view">

        <field name="name">ameliored.view.partner</field>

        <field name="model">res_partner_amelioration</field>

        <field name="inherit_id" ref="base.view_partner_form"/>

        <field name="arch" type="xml">

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

                <field name="announcer"/> 

            </xpath>

        </field>

    </record>

  </data>

</odoo>

get an error : " field `announcer` doesn't exist ".

Thanks!!