常用函数-add_meta_box()
说明
add_meta_box在WordPress 2.5版本中被引入。插件开发者可通过该函数在Write Post,Write Page和Write Link编辑页面内添加版块。
用法
<?php add_meta_box('id', 'title', 'callback', 'page', 'context', 'priority'); ?>
示例
这是一个在文章和页面编辑界面上添加自定义版块的例子,可以在WordPress 2.5或更早版本中运行(未出现add_meta_box函数时)。
<?php /* Use the admin_menu action to define the custom boxes */ add_action('admin_menu', 'myplugin_add_custom_box'); /* Use the save_post action to do something with the data entered */ add_action('save_post', 'myplugin_save_postdata'); /* Adds a custom section to the "advanced" Post and Page edit screens */ function myplugin_add_custom_box() { if( function_exists( 'add_meta_box' )) { add_meta_box( 'myplugin_sectionid', __( 'My Post Section Title', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'post', 'advanced' ); add_meta_box( 'myplugin_sectionid', __( 'My Post Section Title', 'myplugin_textdomain' ), 'myplugin_inner_custom_box', 'page', 'advanced' ); } else { add_action('dbx_post_advanced', 'myplugin_old_custom_box' ); add_action('dbx_page_advanced', 'myplugin_old_custom_box' ); } } /* Prints the inner fields for the custom post/page section */ function myplugin_inner_custom_box() { // Use nonce for verification echo '<input type="hidden" name="myplugin_noncename" id="myplugin_noncename" value="' . wp_create_nonce( plugin_basename(__FILE__) ) . '" />'; // The actual fields for data entry echo '<label for="myplugin_new_field">' . __("Description for this field", 'myplugin_textdomain' ) . '</label> '; echo '<input type="text" name="myplugin_new_field" value="whatever" size="25" />'; } /* Prints the edit form for pre-WordPress 2.5 post/page */ function myplugin_old_custom_box() { echo '<div class="dbx-b-ox-wrapper">' . " "; echo '<fieldset id="myplugin_fieldsetid" class="dbx-box">' . " "; echo '<div class="dbx-h-andle-wrapper"><h3 class="dbx-handle">' . __( 'My Post Section Title', 'myplugin_textdomain' ) . "</h3></div>"; echo '<div class="dbx-c-ontent-wrapper"><div class="dbx-content">'; // output editing form myplugin_inner_custom_box(); // end wrapper echo "</div></div></fieldset></div> "; } /* When the post is saved, saves our custom data */ function myplugin_save_postdata( $post_id ) { // verify this came from the our screen and with proper authorization, // because save_post can be triggered at other times if ( !wp_verify_nonce( $_POST['myplugin_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; } // OK, we're authenticated: we need to find and save the data $mydata = $_POST['myplugin_new_field']; // TODO: Do something with $mydata // probably using add_post_meta(), update_post_meta(), or // a custom table (see Further Reading section below) return $mydata; } ?>
参数
$id
(字符)编辑界面的HTML'id'属性
title
(字符)编辑界面的标题,用户可见
callback
(字符)为编辑界面输出HTML代码的函数
page
(字符)显示编辑界面的Write界面类型(‘文章’,‘页面’或‘链接’)
context
(字符)显示编辑界面的页面部分(‘常规’,‘高级’或‘侧边’(自2.7版本))
priority
(字符)meta box所在内容中的优先级(‘高’或‘低’)
延伸阅读
外部资源
- 为插件使用add_meta_box() —— 如何为插件管理界面使用meta box
- 教程:在WordPress中创建自定义Write Panels —— 用自定义Write选项为文章添加独有数据
分类:中文手册