我从来没见过在自定义面板添加编辑器的应用,直到昨天一个网友说有这个需求,但是我昨天尝试了一下没成功,原因是太晚了,脑袋不清醒,函数都没写完整。
好了废话不多说,怎样在 WordPress 的自定义面板中添加一个可视化的编辑器呢?我们还是沿用上一篇教程中的测试文件,直接在该文件中添加一项。
首先打开我们的 metabox.php 文件,在配置数组中添加一项:
- "checkbox" => array(
 - "name" => "_meta_eidtor",
 - "std" => '',
 - "title" => "编辑器",
 - "type"=>"editor"),
 
接下来我们只需要改动显示的函数 new_meta_boxes,在它的 switch 语句中添加一项即可:
- case 'editor':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - wp_editor( $meta_box['std'], $meta_box['name'].'_value' );
 - //带配置参数
 - /*wp_editor($meta_box['std'],$meta_box['name'].'_value', $settings = array(quicktags=>0,//取消 html 模式
 - tinymce=>1,//可视化模式
 - media_buttons=>0,//取消媒体上传
 - textarea_rows=>5,//行数设为 5
 - editor_class=>"textareastyle") ); */
 - break;
 
其实调用编辑器很简单,只需要使用 wp_editor 函数即可。
效果图:

至此,为了方便很多不愿意折腾的访客,我们直接贴出到现在为止的整个 metabox.php 文件的代码,你只需要在主题中加载这个文件即可,至于怎么配置,我想无需多说。
- <?php
 - $new_meta_boxes =
 - array(
 - "title" => array(
 - "name" => "_meta_title",
 - "std" => "",
 - "title" => "标题",
 - "type"=>"title"),
 - "keywords" => array(
 - "name" => "_meta_keywords",
 - "std" => "",
 - "title" => "关键字",
 - "type"=>"text"),
 - "description" => array(
 - "name" => "_meta_description",
 - "std" => "",
 - "title" => "描述",
 - "type"=>"textarea"),
 - "category" => array(
 - "name" => "_meta_cate",
 - "std" => "",
 - "title" => "选择分类",
 - "subtype"=> "cat",
 - "type"=>"dropdown"),
 - "radio" => array(
 - "name" => "_meta_radio",
 - "std" => 1,
 - "title" => "单选框",
 - "buttons" => array('Yes','No'),
 - "type"=>"radio"),
 - "checkbox" => array(
 - "name" => "_meta_checkbox",
 - "std" => 1,
 - "title" => "复选框",
 - "type"=>"checkbox"),
 - "checkbox" => array(
 - "name" => "_meta_eidtor",
 - "std" => '',
 - "title" => "编辑器",
 - "type"=>"editor"),
 - );
 - function new_meta_boxes() {
 - global $post, $new_meta_boxes;
 - foreach($new_meta_boxes as $meta_box) {
 - //获取保存的是
 - $meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
 - if($meta_box_value != "")
 - $meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
 - echo'<input type="hidden" name="'.$meta_box['name'].'_noncename" id="'.$meta_box['name'].'_noncename" value="'.wp_create_nonce( plugin_basename(__FILE__) ).'" />';
 - //通过选择类型输出不同的 html 代码
 - switch ( $meta_box['type'] ){
 - case 'title':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - break;
 - case 'text':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - echo '<input type="text" size="40" name="'.$meta_box['name'].'_value" value="'.$meta_box['std'].'" /><br />';
 - break;
 - case 'textarea':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - echo '<textarea cols="60" rows="3" name="'.$meta_box['name'].'_value">'.$meta_box['std'].'</textarea><br />';
 - break;
 - case 'dropdown':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - if($meta_box['subtype'] == 'cat'){
 - $select = 'Select category';
 - $entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
 - }
 - echo '<p><select name="'.$meta_box['name'].'_value"> ';
 - echo '<option value="">'.$select .'</option> ';
 - foreach ($entries as $key => $entry){
 - $id = $entry->term_id;
 - $title = $entry->name;
 - if ( $meta_box['std'] == $id ){
 - $selected = "selected='selected'";
 - }else{
 - $selected = "";
 - }
 - echo "<option $selected value='". $id."'>". $title."</option>";
 - }
 - echo '</select><br />';
 - break;
 - case 'radio':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - $counter = 1;
 - foreach( $meta_box['buttons'] as $radiobutton ) {
 - $checked ="";
 - if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
 - $checked = 'checked = "checked"';
 - }
 - echo '<input '.$checked.' type="radio" class="kcheck" value="'.$counter.'" name="'.$meta_box['name'].'_value"/>'.$radiobutton;
 - $counter++;
 - }
 - break;
 - case 'checkbox':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
 - $checked = 'checked = "checked"';
 - else
 - $checked = '';
 - echo '<input type="checkbox" name="'.$meta_box['name'].'_value" value="true" '.$checked.' />';
 - break;
 - //编辑器
 - case 'editor':
 - echo'<h4>'.$meta_box['title'].'</h4>';
 - wp_editor( $meta_box['std'], $meta_box['name'].'_value' );
 - //带配置参数
 - /*wp_editor($meta_box['std'],$meta_box['name'].'_value', $settings = array(quicktags=>0,//取消 html 模式
 - tinymce=>1,//可视化模式
 - media_buttons=>0,//取消媒体上传
 - textarea_rows=>5,//行数设为 5
 - editor_class=>"textareastyle") ); */
 - break;
 - }
 - }
 - }
 - function create_meta_box() {
 - global $theme_name;
 - if ( function_exists('add_meta_box') ) {
 - add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
 - }
 - }
 - function save_postdata( $post_id ) {
 - global $post, $new_meta_boxes;
 - foreach($new_meta_boxes as $meta_box) {
 - if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
 - return $post_id;
 - }
 - if ( 'page' == $_POST['post_type'] ) {
 - if ( !current_user_can( 'edit_page', $post_id ))
 - return $post_id;
 - }
 - else {
 - if ( !current_user_can( 'edit_post', $post_id ))
 - return $post_id;
 - }
 - $data = $_POST[$meta_box['name'].'_value'];
 - if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
 - add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
 - elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
 - update_post_meta($post_id, $meta_box['name'].'_value', $data);
 - elseif($data == "")
 - delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
 - }
 - }
 - add_action('admin_menu', 'create_meta_box');
 - add_action('save_post', 'save_postdata');
 - ?>
 
调用,使用 get_post_meta 函数获取即可,不过主要我们保存的字段名称,虽然我们的配置数组中配置了 name,但是保存自定义字段的时候我们在字段名称后面加了_value,以我们今天新增的_meta_eidtor 为例,获取应该是:
- $ashu_eidtor = get_post_meta($post->ID, "_meta_eidtor_value", true);
 
如何像普通文章一样输出?也就是自动加<p> 标签和换行?如下:
- $ashu_editor = get_post_meta($post->ID, "_meta_eidtor_value", true);
 - $ashu_editor = apply_filters('the_content', $ashu_editor);
 - $ashu_editor = str_replace(']]>', ']]>', $ashu_editor);
 - echo $ashu_editor;