rangedate

add_filter( 'rcl_fields', 'add_field_type_rangedate' );
function add_field_type_rangedate( $fields ) {

    $fields['rangedate'] = array(
        'label'  => __( 'Диапазон дат' ),
        'class'  => 'Rcl_Field_RangeDate'
    );

    return $fields;
}

class Rcl_Field_RangeDate extends Rcl_Field_Abstract {

    public $required;
    public $placeholder_from;
    public $placeholder_to;

    function __construct( $args ) {
        parent::__construct( $args );
    }

    function get_options() {

        return array(
            array(
                'slug'           => 'icon',
                'default'        => 'fa-calendar',
                'placeholder'    => 'fa-calendar',
                'class'          => 'rcl-iconpicker',
                'type'           => 'text',
                'title'          => __( 'Icon class of  font-awesome', 'wp-recall' ),
                'notice'         => __( 'Source', 'wp-recall' ) . ' <a href="https://fontawesome.com/v4.7.0/icons/" target="_blank">http://fontawesome.io/</a>'
            ),
            array(
                'slug'       => 'placeholder_from',
                'default'    => $this->placeholder_from,
                'type'       => 'text',
                'title'      => __( 'Placeholder from', 'wp-recall' )
            ),
            array(
                'slug'       => 'placeholder_to',
                'default'    => $this->placeholder_to,
                'type'       => 'text',
                'title'      => __( 'Placeholder to', 'wp-recall' )
            )
        );
    }

    function get_placeholder( $type = 'from' ) {

        if ( $type == 'from' && $this->placeholder_from ) {
            return 'placeholder="' . $this->placeholder_from . '"';
        } else if ( $type == 'to' && $this->placeholder_to ) {
            return 'placeholder="' . $this->placeholder_to . '"';
        }

        return;
    }

    function get_input() {

        rcl_datepicker_scripts();

        $this->classes = 'rcl-datepicker';

        $content .= '<input type="text" ' . $this->get_class() . ' onclick="rcl_show_datepicker(this);" title="' . __( 'Use the format', 'wp-recall' ) . ': yyyy-mm-dd" pattern="(\d{4}-\d{2}-\d{2})" ' . $this->get_required() . ' ' . $this->get_placeholder( 'from' ) . ' name="' . $this->input_name . '[]" id="' . $this->input_id . '_from" value="' . $this->value[0] . '"/>';
        $content .= ' - ';
        $content .= '<input type="text" ' . $this->get_class() . ' onclick="rcl_show_datepicker(this);" title="' . __( 'Use the format', 'wp-recall' ) . ': yyyy-mm-dd" pattern="(\d{4}-\d{2}-\d{2})" ' . $this->get_required() . ' ' . $this->get_placeholder( 'to' ) . ' name="' . $this->input_name . '[]" id="' . $this->input_id . '_to" value="' . $this->value[1] . '"/>';

        return $content;
    }

}