New Helpers function: parse_wp_query_arguments

[ajaydsouza]

Add new function in Helpers. Also parse CRP_Query to allow for all WP_Query parameters

    /**
     * Parse WP_Query variables to parse comma separated list of IDs and convert them to arrays as needed by WP_Query.
     *
     * @param array $query_vars Defined query variables.
     * @return array Complete query variables with undefined ones filled in empty.
     */
    public static function parse_wp_query_arguments( $query_vars ) {

        $array_keys = array(
            'category__in',
            'category__not_in',
            'category__and',
            'post__in',
            'post__not_in',
            'post_name__in',
            'tag__in',
            'tag__not_in',
            'tag__and',
            'tag_slug__in',
            'tag_slug__and',
            'post_parent__in',
            'post_parent__not_in',
            'author__in',
            'author__not_in',
        );

        foreach ( $array_keys as $key ) {
            if ( isset( $query_vars[ $key ] ) ) {
                $query_vars[ $key ] = wp_parse_list( $query_vars[ $key ] );
            }
        }

        return $query_vars;
    }