The trick to find a <td> by its corresponding <th> position in XPath?

[yajo]

Hi there guys.

I remember there was a way to do this but I can't remember where I saw it...

The point is I have a <th name="th_sm_ordered"><strong>Ordered</strong></th> in a report and I have a <td> (down below, inside the <tbody>) which has no indication of what column is it targeting.

So, how to get the position of the <th> inside the <thead> and reuse it to get the appropriate <td>? 🤔

Particularly, I want to find this <td> based on the index position of this <th>.

[yajo]

Ha! Found it!

Well, for the sake of the next one coming to this (including my future self), this was the solution:

    <template id="report_delivery_document" inherit_id="stock.report_delivery_document">
        <xpath expr="//table[@name='stock_move_table']/tbody//td[
                1 + count(
                    //table[@name='stock_move_table']
                    //th[@name='th_sm_ordered']
                    /preceding-sibling::*
                )
            ]" position="inside">
            <!-- Yay! 🎉 -->
        </xpath>
    </template>

Inspiration: https://stackoverflow.com/a/227080/1468388

[simahawk]

IMO its easier to look for the specific content and walk up. Eg:

 <xpath expr="//table[@name='stock_move_table']/tbody//td//span[@t-field='move.product_id']/.."> 

or

 <xpath expr="//table[@name='stock_move_table']/tbody//td//span[@t-field='move.product_id']/ancestor::td">