Sorting Ditto Listings by Price from a TV Value

Sorting by price looks simple until the price is stored in a TV and the listing is already driven by Ditto. The donor topic tackled exactly that situation by pairing a request-based sort selector with Ditto’s request extender.

Typical pattern

<form action="[~[*id*]~]" class="sortovkaprice">
    <select name="ditto_id1_sortDir" onchange="this.form.submit();">
        <option value="ASC">Low to high</option>
        <option value="DESC">High to low</option>
    </select>
</form>

[!Ditto? &tpl=`sortcategtovar` &extenders=`request` &depth=`1`!]

What to watch

• Make sure the TV data is stored in a format that sorts numerically, not lexically.
• Keep the allowed sort values constrained to the directions you actually support.
• Preserve the selected sort state across requests so the UI reflects the active order.

The main idea is straightforward: the price may live in a TV, but the sorting UX should still behave like a first-class catalog feature.