我正在处理一些自定义的日志类型。我完成了第一个任务,意识到我使用的元数据库代码可以被其他、未来、自定义的日志类型(以及页面、日志等)重用。所以我把这个类放在它自己的PHP文件中,并把它从我的子主题的functions.php文件中包含进来。我以前从未使用过类,但我想我可以从我想要的任何地方调用该类,因为这是我为函数所做的。相反,我从post-types.php文件调用它,并得到以下错误:
“致命错误:在第73行的d:\helga\xampp\htdocs\plagueround\wp content\themes\plagueround\new2\functions\post-types.php中找不到类'my'u meta'box'”
在子主题的functions.php中,我包含了类所在的文件:
define('CHILDTHEME_DIRECTORY', get_stylesheet_directory() . '/');
// Meta Box Class - makes meta boxes
require_once(CHILDTHEME_DIRECTORY . 'functions/meta_box_class.php');
这是我的课
//My Meta Box CLASS
//from: http://www.deluxeblogtips.com/2010/05/howto-meta-box-wordpress.html
class My_meta_box {
protected $_meta_box;
// create meta box based on given data
function __construct($meta_box) {
$this->_meta_box = $meta_box;
add_action('admin_menu', array(&$this, 'add'));
add_action('save_post', array(&$this, 'save'));
}
/// Add meta box for multiple post types
function add() {
foreach ($this->_meta_box['pages'] as $page) {
add_meta_box($this->_meta_box['id'], $this->_meta_box['title'], array(&$this, 'show'), $page, $this->_meta_box['context'], $this->_meta_box['priority']);
}
}
// Callback function to show fields in meta box
function show() {
global $post;
// Use nonce for verification
echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
echo '<table class="form-table">';
foreach ($this->_meta_box['fields'] as $field) {
// get current post meta data
$meta = get_post_meta($post->ID, $field['id'], true);
echo '<tr>',
'<th style="width:20%"><label for="', $field['id'], '">', $field['name'], '</label></th>',
'<td>';
switch ($field['type']) {
case 'text':
echo '<input type="text" name="', $field['id'], '" id="', $field['id'], '" value="', $meta ? $meta : $field['std'], '" size="30" style="width:97%" />',
'<br />', $field['desc'];
break;
case 'textarea':
echo '<textarea name="', $field['id'], '" id="', $field['id'], '" cols="60" rows="4" style="width:97%">', $meta ? $meta : $field['std'], '</textarea>',
'<br />', $field['desc'];
break;
case 'select':
echo '<select name="', $field['id'], '" id="', $field['id'], '">';
foreach ($field['options'] as $option) {
echo '<option', $meta == $option ? ' selected="selected"' : '', '>', $option, '</option>';
}
echo '</select>';
break;
case 'select2': //for when value and display text don't match
//$options array must be multidimensional with both the 'value' and the 'text' for each option
//for example = array( array(text=>text1,value=>value1),array(text=>text2,value=>value2))
//then in <option> value = $option['value'] and text = $option['text']
echo '<select name="', $field['id'], '" id="', $field['id'], '">';
foreach ($field['options'] as $option) {
echo '<option value="',$option['value'],'"', $meta == $option['value'] ? ' selected="selected"' : '', '>', $option['desc'], '</option>';
}
echo '</select>';
break;
case 'radio':
foreach ($field['options'] as $option) {
echo '<input type="radio" name="', $field['id'], '" value="', $option['value'], '"', $meta == $option['value'] ? ' checked="checked"' : '', ' />', $option['name'];
}
break;
case 'checkbox':
echo '<input type="checkbox" name="', $field['id'], '" id="', $field['id'], '"', $meta ? ' checked="checked"' : '', ' />';
break;
}
echo '<td>',
'</tr>';
}
echo '</table>';
}
// Save data from meta box
function save($post_id) {
// verify nonce
if (!wp_verify_nonce($_POST['mytheme_meta_box_nonce'], basename(__FILE__))) {
return $post_id;
}
// check autosave
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
return $post_id;
}
// check permissions
if ('page' == $_POST['post_type']) {
if (!current_user_can('edit_page', $post_id)) {
return $post_id;
}
} elseif (!current_user_can('edit_post', $post_id)) {
return $post_id;
}
foreach ($this->_meta_box['fields'] as $field) {
$old = get_post_meta($post_id, $field['id'], true);
$new = $_POST[$field['id']];
if ($new && $new != $old) {
update_post_meta($post_id, $field['id'], $new);
} elseif ('' == $new && $old) {
delete_post_meta($post_id, $field['id'], $old);
}
}
}
}
然后,在我的post-types.php文件中,我为一个自定义的post类型定义了一些元框:
$prefix = '_events_';
$post_id = $_GET['post'] ? $_GET['post'] : $_POST['post_ID'] ;
$events_meta_box = array(
'id' => 'wpt_events',
'title' => 'Events Options',
'pages' => array('events'), // multiple post types possible
'context' => 'side',
'priority' => 'low',
'fields' => array(
array(
'name' => 'Headline',
'desc' => 'Enter the heading you\'d like to appear before the video',
'id' => $prefix . 'heading1',
'type' => 'text',
'std' => ''
),
)
);
$my_box = new My_meta_box($events_meta_box);
那么-如何引用其他文件中的类?
编辑/继续
只需将require-once语句移到post-types.php(尝试调用类的语句)就可以了。但我还是尝试了自动加载脚本。
function __autoload($className)
{
require(CHILDTHEME_DIRECTORY .'functions/class_' . $className . '.php') ;
}
在这里,我将类文件重命名为class\u my meta\u box.php,而我的\u meta\u box是类名。
导致以下错误:
警告:require(d:\helga\xampp\htdocs\plagueround/wp content/themes/plagueround_new/functions/class_wp_user_search.php)【function.require】:无法打开流:在d:\helga\xampp\htdocs\plagueround\wp content\themes\plagueround_new\functions.php的第66行没有这样的文件或目录。
致命错误:require()[function.require]:在第66行打开必需的'd:\helga\xampp\htdocs\plagueround/wp content/themes/plagueround'u new/functions/class'u wp'u user'u search.php'(包括'u path=.;d:\helga\xampp\php\pear')失败。
我不完全理解它说的是什么,但我认为它正在尝试自动加载一些默认的wordpress类…在我的目录中查找它显然不存在。
