Select custom fields

[Nestor]

Hello. I need to make a search engine where I can choose to search selectively in a custom field (with a Drop down). There are 3 fields (ZEN Code, OFC Code, OR Original Code). I attach an example.
The search must be done only on the selected option (using a Drop down to select a specific Custom Field).
Each product may have a Custom Field with its ZEN Code, OFC Code and Original Code number, where applicable, or it may not have one).
I don’t understand the logic of using the “Custom Fields” option in your Plugin and perhaps I should use another alternative for use this “select”.

Could you give me some help to solve it please?

I attach an example.

Thank you so much.

[Nestor]

I attach an example.

[Ernest Marcinko]

Hi,

This could be possible via a bit of custom code and using a post meta filter, it’s not possible only via configuration.

1. Make sure to use the regular engine
2. Create a custom field filter exactly like this.
3. Make it visible by default
4. Try adding this code via the Code Snippets plugin or to the functions.php file in your theme/child theme directory – make sure to have a full server back-up first for safety. For more details you can check the safe coding guidelines.

add_filter('asp_query_args', function ( $args, $search_id, $options ) {
	foreach ( $args['post_meta_filter'] as $key => $field ) {
		if ( $field['key'] ==='dummy_field' ) {
			$args['post_custom_fields_all'] = false;
			$args['post_custom_fields'][] = esc_sql($field['value']);
			unset($args['post_meta_filter'][$key]);
		}
	}
	return $args;
}, 10, 3);

This will convert the filter into a search field instead.

[Nestor]

Thank you, Ernest!
It works fine!
Have a nice day/night.

[Ernest Marcinko]

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