Add Space (Living Space) Query to WPCasa Search

functions.php

<?php

/**
 * Add Space Fields to advanced search
 */
add_filter( 'wpsight_get_advanced_search_fields', 'custom_get_advanced_search_fields', 12 );

function custom_get_advanced_search_fields( $fields_advanced ) {
	
	// Set advanced form fields
	$fields_advanced['space_min'] = array(
		'label' 		=> __( 'Space (min)', 'wpcasa-advanced-search' ),
		'key'			=> '_details_4',
		'type' 			=> 'text',
		'data_compare' 	=> '>=',
		'data_type' 	=> 'numeric',
		'advanced'		=> true,
		'class'			=> 'col-sm-12 col-sm-3',
		'priority'		=> 105
	);

	$fields_advanced['space_max'] = array(
		'label' 		=> __( 'Space (max)', 'wpcasa-advanced-search' ),
		'key'			=> '_details_4',
		'type' 			=> 'text',
		'data_compare' 	=> '<=',
		'data_type' 	=> 'numeric',
		'advanced'		=> true,
		'class'			=> 'col-sm-12 col-sm-3',
		'priority'		=> 106
	);
	
	return $fields_advanced;
	
}

/**
 * Add custom listing query vars
 */
add_filter( 'wpsight_listing_query_vars', 'custom_listing_query_vars', 11 );

function custom_listing_query_vars( $vars ) {
	
	$vars['space_min'] = get_query_var( 'space_min' );
	$vars['space_max'] = get_query_var( 'space_max' );

	return $vars;
	
}

/**
 * Extend the Listing Query to return listings based on a specifc detail
 * This is used for Search by Space
 */

add_filter( 'wpsight_get_listings_query_args', 'custom_get_listings_query_args', 11, 2 );

function custom_get_listings_query_args( $query_args, $args ) {
	
	
	if ( ! empty( $args['space_min'] ) ) {

		$query_args['meta_query']['space_min'] = array(
			'key'     => '_details_4',
			'value'   => preg_replace( '/\D/', '', $args['space_min'] ),
			'compare' => '>=',
			'type'    => 'numeric'
		);

	}

	// Set meta query for max (maximum price)

	if ( ! empty( $args['space_max'] ) ) {

		$query_args['meta_query']['space_max'] = array(
			'key'     => '_details_4',
			'value'   => preg_replace( '/\D/', '', $args['space_max'] ),
			'compare' => '<=',
			'type'    => 'numeric'
		);

	}

	return $query_args;
	
}

/**
 * Add custom query vars
 */
add_filter( 'query_vars', 'custom_query_vars_filter', 11 );

function custom_query_vars_filter( $vars ) {
	
	$vars[] = "space_min";
	$vars[] = "space_max";
	
	return $vars;
	
}