I have more or less found a solution… Somehow!
I switched the dynamic population of the select box around so that it’s using the trail length as the value, as this will never change but the price will, and I need to match the value of the select to one of the repeater sub-fields.
Here’s how I’m populating the select now:
function acf_load_duration_and_pricing_field_choices( $field ) {
// reset choices
$field['choices'] = array();
// if has rows
if( have_rows('options_trail_duration_and_price', 'option') ) {
// while has rows
while( have_rows('options_trail_duration_and_price', 'option') ) {
// instantiate row
the_row();
// vars
$duration = get_sub_field('trail_duration');
$price = get_sub_field('trail_price');
// append to choices - this is the bit I've changed
$field['choices'][ $duration ] = $duration . ' - ' . '£' . $price . 'pp';
}
}
// return the field
return $field;
}
add_filter('acf/load_field/name=duration_and_pricing', 'acf_load_duration_and_pricing_field_choices');
And now I’m pulling in the trail price through this shortcode:
if( have_rows('options_trail_duration_and_price', 'option') ): ?>
<?php while( have_rows('options_trail_duration_and_price', 'option') ): the_row();
$optionduration = get_sub_field('trail_duration', 'option');
$optionprice = get_sub_field('trail_price', 'option');
$duration = get_field('duration_and_pricing')['value'];
if( $optionduration == $duration )
{
echo '<span class="YES!">£' . $optionprice . 'pp</span>';
}
endwhile;
endif;
Matching the select’s value (e.g. ‘2 Days’) with the repeater’s trail_duration value (‘2 Days’), then outputting the trail_price of that associated row, rather than the trail_price stored in the select’s meta_value.
For some reason in some cases, it’s outputting the price twice, but at this point I’m just glad it’s working in some way!
Another way to do this might be to hook in to the Update button in the Options page and have it update the meta_value of duration_and_pricing across all trails posts when the prices are updated in the options, but that seems like overkill and I’m still not sure how to do it.
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