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实现wordpress自定义字段面板调用tinymce编辑器

2020-11-10 55 11/10

OZABC前面的教程《WordPress添加自定义字段栏目面板》介绍了实现自定义字段域面板的方法，前面介绍的方法使用的是input输入框，输出的是纯文本内容，可能无法满足部分用户的需求。网上搜索是否可以调用wordpress默认编辑器的方法，找到以下教程内容，有需要的博主可以借用一下，该方法是使用了wp_editor函数实现。

相关代码：

把下面的代码添加到functions.php文件：

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<?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');
?>

然后在当前主题模板中使用get_post_meta函数获取自定义栏目的内容，需要注意的是配置数组中配置了name，但是保存自定义字段的时候在字段名称后面加了_value，以获取_meta_eidtor为例，调用的代码是：

1

$ashu_eidtor = get_post_meta($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：

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$ashu_editor = get_post_meta($post->ID, "_meta_eidtor_value", true);
$ashu_editor = apply_filters('the_content', $ashu_editor);
$ashu_editor = str_replace(']]>', ']]&gt;', $ashu_editor);
echo $ashu_editor;

代码转自：阿树工作室

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