在制作addv期间。小部件I面临问题。当我单击上载按钮时，它不会重定向到媒体库。如何解决这个问题？

<?php

add_action(\'widgets_init\',\'personalblog_300x600_add_widgets\');

function personalblog_300x600_add_widgets(){
        register_widget("pb_300x600_add_widget");
}

class pb_300x600_add_widget extends WP_widget{

// Initialize the widget

    public function pb_300x600_add_widget(){
        $widget_ops = array( \'classname\' => \'pb_300x600_add_widget\', \'description\' => esc_html__( \'Strawberry: A widget that shows 300x600 Adv.\' , \'strawberry\') );
        parent::__construct(\'pb_300x600_add_widget\', esc_html__(\'Strawberry: Add 300x600\', \'strawberry\'), $widget_ops);
    }

    public function widget( $args, $instance ) {
        extract( $args );
        $title    = apply_filters(\'widget_title\', $instance[\'title\'] );
        $adv_href = esc_url($instance[\'adv_href\']);
        $adv_img  = esc_attr($instance[\'adv_img\']);
        $image_id = esc_attr($instance[\'image_id\']);
        $adv_code = $instance[\'adv_code\'];?>
        <div class="advertising">
            <?php if ($adv_code == "") {
                if ($adv_href != "") {?><a href="<?php echo esc_url($adv_href)?>"><?php }?>
                    <img alt="" src="<?php echo ($adv_img)?>">
                <?php if ($adv_href != "") {?></a><?php }?>
            <?php }else {
                echo ($adv_code);
            }?>
        </div><!-- End advertising -->
        <div class="clearfix"></div>
        <?php
    }

    public function update( $new_instance, $old_instance ) {
        $instance             = $old_instance;
        $instance[\'title\']    = strip_tags( $new_instance[\'title\'] );
        $instance[\'adv_code\'] = $new_instance[\'adv_code\'];
        $instance[\'adv_img\']  = $new_instance[\'adv_img\'];
        $instance[\'image_id\'] = $new_instance[\'image_id\'];
        $instance[\'adv_href\'] = $new_instance[\'adv_href\'];
        return $instance;
    }

    public function form( $instance ) {
        $defaults = array( \'title\' => \'Adv 300x600\' );
        $instance = wp_parse_args( (array) $instance, $defaults ); ?>

        <p>
            <label for="<?php echo $this->get_field_id( \'title\' ); ?>"><?php esc_html_e(\'Title :\', \'strawberry\'); ?></label>
            <input id="<?php echo $this->get_field_id( \'title\' ); ?>" name="<?php echo $this->get_field_name( \'title\' ); ?>" value="<?php echo (isset($instance[\'title\'])?esc_attr($instance[\'title\']):""); ?>" class="widefat" type="text">
        </p>
        <p>
            <label for="<?php echo $this->get_field_id( \'adv_img\' ); ?>"><?php esc_html_e(\'Image URL :\', \'strawberry\'); ?> </label>
            <input id="<?php echo $this->get_field_id( \'adv_img\' ); ?>" name="<?php echo $this->get_field_name( \'adv_img\' ); ?>" value="<?php echo (isset($instance[\'adv_img\'])?$instance[\'adv_img\']:"");?>" class="widefat upload" type="text">
            <br><br>
            <input class="custom_media_button button upload-button-2 upload-button-widget" type="button" value="Upload">
            <br><br>
            <input id="<?php echo $this->get_field_id( \'image_id\' ); ?>" name="<?php echo $this->get_field_name( \'image_id\' ); ?>" value="<?php echo (isset($instance[\'image_id\'])?$instance[\'image_id\']:"");?>" class="widefat image_id" type="hidden">
        </p>
        <p>
            <label for="<?php echo $this->get_field_id( \'adv_href\' ); ?>"><?php esc_html_e(\'Advertising url : \', \'strawberry\'); ?></label>
            <input id="<?php echo $this->get_field_id( \'adv_href\' ); ?>" name="<?php echo $this->get_field_name( \'adv_href\' ); ?>" value="<?php echo (isset($instance[\'adv_href\'])?esc_attr($instance[\'adv_href\']):""); ?>" class="widefat" type="text">
        </p>

        <em style="display:block; border-bottom:1px solid #CCC; margin-bottom:15px;">OR</em>

        <p>
            <label for="<?php echo $this->get_field_id( \'adv_code\' ); ?>"><?php esc_html_e(\'Advertising Code html ( Ex: Google ads) :\', \'strawberry\'); ?> </label>
            <textarea id="<?php echo $this->get_field_id( \'adv_code\' ); ?>" name="<?php echo $this->get_field_name( \'adv_code\' ); ?>" class="widefat"><?php echo (isset($instance[\'adv_code\'])?esc_attr($instance[\'adv_code\']):""); ?></textarea>
        </p>
    <?php
    }
}
?>

 function media_upload(.custom_media_button.button) {
        var _custom_media = true,
        _orig_send_attachment = wp.media.editor.send.attachment;

        $(\'body\').on(\'click\', button_class, function(e) {
            var button_id =\'#\'+$(this).attr(\'id\');
            var self = $(button_id);
            var send_attachment_bkp = wp.media.editor.send.attachment;
            var button = $(button_id);
            var id = button.attr(\'id\').replace(\'_button\', \'\');
            _custom_media = true;
            wp.media.editor.send.attachment = function(props, attachment){
                if ( _custom_media  ) {
                    $(\'.custom_media_id\').val(attachment.id);
                    $(\'.custom_media_url\').val(attachment.url);
                    $(\'.custom_media_image\').attr(\'src\',attachment.url).css(\'display\',\'block\');
                } else {
                    return _orig_send_attachment.apply( button_id, [props, attachment] );
                }
            }
            wp.media.editor.open(button);
                return false;
        });