WordPress的自定义部件图片上传(Wordpress custom widget image

2019-08-04 01:56发布

我忙着建设自己的WordPress的Widget。 一切正常,除了WordPress的媒体了装载机的罚款。 我已经创建了8个按钮和八个输入文本字段应包含已上传的图片的URL。

单击事件不被解雇,可能是因为WordPress的两倍输出HTML(一旦可用的小部件的酒吧,一次在酒吧当前活动窗口小部件)。

有谁看到我在做什么错?

下面你找到我的代码。

在此先感谢您的帮助!

<?php
/*
Plugin Name: Home_Rollover_Widget
Plugin URI: 
Description: Home Rollover Widget
Version: 1.0
Author: 
Author URI: 
*/

// Initialize widget
add_action('widgets_init', array('Home_Rollover_Widget', 'register'));

/**
 * Home_Rollover_Widget
 * 
 * @package 
 * @author 
 * @copyright 2012
 * @version $Id$
 * @access public
 */
class Home_Rollover_Widget extends WP_Widget
{   
    /**
     * __construct()
     * 
     * @return void
     */
    public function __construct()
    {
        parent::__construct('home-rollover-widget');
    }
    /**
     * control()
     * 
     * @return void
     */
    public function control()
    {    
        // Load upload an thickbox script
        wp_enqueue_script('media-upload');
        wp_enqueue_script('thickbox');

        // Load thickbox CSS
        wp_enqueue_style('thickbox');

        // Load all widget options
        $data = get_option('Home_Rollover_Widget');
        ?>

        <!-- Widget title -->
        <p><label>Titel<input name="home_rollover_widget_title" type="text" value="<?php echo $data['home_rollover_widget_title']; ?>" /></label></p>

        <?php
        // If there's a title provided, update it.
        if (isset($_POST['home_rollover_widget_title'])){
            $data['home_rollover_widget_title'] = attribute_escape($_POST['home_rollover_widget_title']);
        }

        // Show 8 input groups for image URL and text
        for ($i = 1; $i <= 8; ++$i)
        {
            ?>

            <p><a href="#" id="upload-button-<?php echo $i; ?>">UPLOAD IMAGE</a></p>
            <p><label>IMAGE <?php echo $i; ?><input id="home_rollover_widget_image_url_<?php echo $i; ?>" name="home_rollover_widget_image_url_<?php echo $i; ?>" type="text" value="<?php echo $data['home_rollover_widget_image_url_'.$i]; ?>" /></label></p>
            <p><label>TEXT <?php echo $i; ?><input name="home_rollover_widget_text_<?php echo $i; ?>" type="text" value="<?php echo $data['home_rollover_widget_text_'.$i]; ?>" /></label></p>
            <?php
            // If there's an URL provided, update it.
            if (isset($_POST['home_rollover_widget_image_url_'.$i])){
                $data['home_rollover_widget_image_url_1'] = attribute_escape($_POST['home_rollover_widget_image_url_'.$i]);
            }

            // if there's a text provided, update it.
            if (isset($_POST['home_rollover_widget_text_'.$i])) {
                $data['home_rollover_widget_text_1'] = attribute_escape($_POST['home_rollover_widget_text_'.$i]);
            }

            ?>

            <script type="text/javascript">            
                var formField = '';
                var imgUrl ='';

                jQuery(document).ready(function() {
                    jQuery('#upload-button-<?php echo $i; ?>').click(function() {
                        alert('Clicked on upload button');
                        formField = jQuery('#upload-button-<?php echo $i; ?>').attr('name');
                        tb_show('', 'media-upload.php?type=image&amp&TB_iframe=1');
                        return false;
                    });

                    // send url back to plugin editor
                    window.send_to_editor = function(html) {
                        imgUrl = jQuery('img',html).attr('src');
                        alert('Sending image url'+imgUrl+' to text field');
                        jQuery('#home_rollover_widget_image_url_<?php echo $i; ?>').val(imgUrl);
                        tb_remove();
                    }            
                });
            </script>

            <hr />

            <?php    
        }

        // Update widget data
        update_option('Home_Rollover_Widget', $data);
    }

    /**
     * widget()
     * 
     * @param mixed $args
     * @return void
     */
    function widget($args)
    {           
        // Load all widget options
        $data = get_option('Home_Rollover_Widget');        
        ?>

        <h4><?php echo $data['home_rollover_widget_title']; ?></h4>

        <div id="all">
            <?php
            // Loop though the widget elements
            for ($i = 1; $i <= 8; ++$i) 
            {
                // Find image URL
                $imageUrl = $data['home_rollover_widget_image_url_'.$i];

                // Check for first slash, if not present, add it.
                if (substr($imageUrl, 0, 1) != '/') {
                    $imageUrl = '/'.$imageUrl;
                }
                ?>
                <ul>
                    <li><a href="#"><img src="<?php echo get_template_directory_uri(); ?><?php echo $imageUrl; ?>" /><h4><?php echo $data['home_rollover_widget_text_'.$i]; ?></h4></a></li>      
                </ul>
                <?php
            }
            ?>
        </div>
        <?php
    }

    /**
     * register()
     * 
     * @return void
     */
    function register()
    {
        // Register for sidebar
        register_sidebar_widget('Home Rollover Widget', array('Home_Rollover_Widget', 'widget'));

        // Register for control panel
        register_widget_control('Home Rollover Widget', array('Home_Rollover_Widget', 'control'));
    }
}

Answer 1:

我已经简化了窗口小部件一点点在这个例子中,去掉for循环,因为我觉得你可以只创建控件的新实例。 这也使得分拣物品的额外好处。 我感动的JS到另一个文件中,没有必要重复的代码。

Widget类

class Home_Rollover_Widget extends WP_Widget
{

  public function __construct()
  {
    parent::__construct(
      'home-rollover-widget',
      'Home Rollover Widget',
      array(
        'description' => 'Home rollover widget'
      )
    );
  }

  public function widget( $args, $instance )
  {
    // basic output just for this example
    echo '<a href="#">
      <img src="'.esc_url($instance['image_uri']).'" />
      <h4>'.esc_html($instance['image_uri']).'</h4>
    </a>';
  }

  public function form( $instance )
  {
    // removed the for loop, you can create new instances of the widget instead
    ?>
    <p>
      <label for="<?php echo $this->get_field_id('text'); ?>">Text</label><br />
      <input type="text" name="<?php echo $this->get_field_name('text'); ?>" id="<?php echo $this->get_field_id('text'); ?>" value="<?php echo $instance['text']; ?>" class="widefat" />
    </p>
    <p>
      <label for="<?php echo $this->get_field_id('image_uri'); ?>">Image</label><br />
      <input type="text" class="img" name="<?php echo $this->get_field_name('image_uri'); ?>" id="<?php echo $this->get_field_id('image_uri'); ?>" value="<?php echo $instance['image_uri']; ?>" />
      <input type="button" class="select-img" value="Select Image" />
    </p>
    <?php
  }


} 
// end class

// init the widget
add_action( 'widgets_init', create_function('', 'return register_widget("Home_Rollover_Widget");') );

// queue up the necessary js
function hrw_enqueue()
{
  wp_enqueue_style('thickbox');
  wp_enqueue_script('media-upload');
  wp_enqueue_script('thickbox');
  // moved the js to an external file, you may want to change the path
  wp_enqueue_script('hrw', '/wp-content/plugins/home-rollover-widget/script.js', null, null, true);
}
add_action('admin_enqueue_scripts', 'hrw_enqueue');

新的js文件:使用.on()方法来代替.click()附加的事件处理程序。

var image_field;
jQuery(function($){
  $(document).on('click', 'input.select-img', function(evt){
    image_field = $(this).siblings('.img');
    tb_show('', 'media-upload.php?type=image&amp;TB_iframe=true');
    return false;
  });
  window.send_to_editor = function(html) {
    imgurl = $('img', html).attr('src');
    image_field.val(imgurl);
    tb_remove();
  }
});


Answer 2:

该脚本帮助了我很多。 后来,虽然,我发现它在我的职位媒体上传也许是因为它被调用媒体上传脚本两次搞砸。 我解决它通过添加

if( $hook != 'widgets.php' ) 
    return;

像这样:

// queue up the necessary js
function hrw_enqueue($hook) {

if( $hook != 'widgets.php' ) 
    return;

  wp_enqueue_style('thickbox');
  wp_enqueue_script('media-upload');
  wp_enqueue_script('thickbox');
  // I also changed the path, since I was using it directly from my theme and not as a plugin
  wp_enqueue_script('hrw', get_template_directory_uri() . '/js/script.js', null, null, true);
}
add_action('admin_enqueue_scripts', 'hrw_enqueue');

这种方式,窗口小部件调用只在小部件页面,而不是在整个管理上载脚本。



文章来源: Wordpress custom widget image upload