Reply To: Fill fields after change value in another field

• [email protected]

• December 30, 2020 at 6:53 pm

Here is a more complete example .

UC : you want to change the content of some fields based on the selection of a combo box.

Here the JS part :

jQuery(document).ready(($) => {
    acf.addFilter('select2_ajax_data',(data, args, $input, field, instance) => {
            
            // Get the combo field instance

            let your_combo = acf.getFields({
                name: 'your_combo_field_name'
            })[0];

            if (your_combo !== undefined && (data.field_key === field.get('key')) {
                    data.your_value = your_combo.val();  // Here is the magic ;)
                }
            }
        });
})

And on PHP side, for all the fields depending on the combo selected value

foreach (['field1','field2','field3',] as $name) {
	add_filter( 'acf/fields/post_object/query/name=' . $name, function ( $args, $field, $post_id ) {

		// get the value from AJAX or from the field value
		$list = $_POST['your_value'] ) ?? get_field( 'your_combo_field_name', $post_id );
		}

		// change the query according to your model
		if ( null !== $list ) {
			// $args['tax_query']
			// $args['meta_query'] 
		}
		return $args;
	}, 1, 3 );
}

Hope this helps. Do not hesitate to comment if you find any problem in the code (wrote online from a live example)