Trying to show custom product field on stock.inventory.line view

Question

I'm trying to show custom product field on stock.inventory.line but keep getting error "Field stock.inventory.line.outdated cannot find dependency 'stock_move_ids' on model 'product.template'."

This is in my module manifest file under dependencies:

'depends': ['base', 'product', 'stock', 'sale', 'account', 'stock_account']

This is inside python file:

from odoo import models, fields

class StockInventoryLine(models.Model):
_inherit = 'stock.inventory.line'

product_id = fields.Many2one('product.template', string='Product')
instrument_field = fields.Many2one(related='product_id.instrument', string='Instrument')

This is in my XML file:

<?xml version="1.0" encoding="UTF-8" ?>
<odoo>
    <data>
        <record id="view_stock_inventory_line_tree" model="ir.ui.view">
            <field name="name">stock.inventory.line.tree</field>
            <field name="model">stock.inventory.line</field>
            <field name="inherit_id" ref="stock.view_stock_inventory_line_tree"/>
            <field name="arch" type="xml">
                <xpath expr="//field[@name='product_id']" position="after">
                    <field name="instrument_field"/>
                </xpath>
            </field>
        </record>
    </data>
</odoo>

I get that probably the error is with the model stock.inventory.line but I don't know what to use here.

Answer 1

The model stock.inventory.line doesn't exists any more in Odoo 15. it's replaced with stock.quant model.

If you are using Odoo 14 or previous versions, the product_id field in stock.inventory.line defined as Many2one from product.product and you redefined it to link it with product.template.

The product.product inheriting all fields from product.template so you can get instrument_field directly from product.product

Another thing, stock_move_ids defined in product.product and because of your overriding, Odoo couldn't find it in product.template

Please remove the product_id from your code as below.

from odoo import models, fields

class StockInventoryLine(models.Model):
    _inherit = 'stock.inventory.line'

    instrument_field = fields.Many2one(related='product_id.instrument', 
    string='Instrument')