My question is how can I load the data update for the selected product in the list when I click or select the Many2one x_studio_pc field. Currently all PCs are loaded for each product.

from odoo import api, fields, models, _

from odoo.exceptions import UserError

class PurchaseOrderLine(models.Model):

    _inherit = 'purchase.order.line'

    x_studio_pc = fields.Many2one(

        'product.template.line',

        string='PC'

    )

    @api.onchange('product_id')

    def _onchange_product_id_set_pc_domain(self):

        tmpl = self.product_id.product_tmpl_id

        raise UserError(_(self.product_id.name))

        if tmpl and hasattr(tmpl, 'x_pc_liste') and tmpl.x_pc_liste:            

            pc_ids = tmpl.x_pc_liste.ids

            return {

                'domain': {

                    'x_studio_pc': [('id', 'in', pc_ids)]

                }

            }

        else:

            return {

                'domain': {

                    'x_studio_pc': []

                }

            }

Hi,

Please refer to the code below:

Python

Model: Product Template

class ProductTemplate(models.Model):
    _inherit = 'product.template'

    x_pc_liste = fields.One2many('product.template.line', 'product_tmpl_id', string='PC List')

Model: Product Template Line

class ProductTemplateLine(models.Model):
    _name = 'product.template.line'
    _description = 'Product Template Line'

    x_name = fields.Char(string='PC Name')
    product_tmpl_id = fields.Many2one('product.template', string='Product Template')

Model: Purchase Order Line

class PurchaseOrderLine(models.Model):
    """
       Inherits Purchase Order Line to add a custom field `x_studio_pc` that allows
       the user to select a specific PC entry (from `product.template.line`) associated 
       with the selected product's template.

       The field is a Many2one relation and uses a domain to restrict selectable 
       PC lines to only those linked to the current product's template.
       """
    _inherit = 'purchase.order.line'

    x_studio_pc = fields.Many2one(
        'product.template.line',
        string='PC',
        domain="[('product_tmpl_id', '=', product_id.product_tmpl_id)]"
    )

Hope it helps.

Hii,

here is update code  of custom module

models/product_template.py

from odoo import models, fields

class ProductTemplate(models.Model):

    _inherit = 'product.template'

    x_pc_liste = fields.One2many('product.template.line', 'product_tmpl_id', string="PC List")

models/purchase_order_line.py

from odoo import models, fields

class PurchaseOrderLine(models.Model):

    _inherit = 'purchase.order.line'

    x_pc_name = fields.Many2one(

        'product.template.line',

        string='PC Name',

        domain="[('product_tmpl_id', '=', product_id.product_tmpl_id)]"

    )

Add this to your purchase order line form (usually in purchase_order_views.xml):

<odoo>

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

        <field name="name">purchase.order.form.pc.name</field>

        <field name="model">purchase.order</field>

        <field name="inherit_id" ref="purchase.purchase_order_form"/>

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

            <xpath expr="//field[@name='order_line']/form//field[@name='price_unit']" position="after">

                <field name="x_pc_name"/>

            </xpath>

        </field>

    </record>

</odoo>

i hope it is help full to solve your problem