我到处都能看到它：在单个帖子中，在类别档案中等，但在首页帖子中没有。
我以这种方式显示元框：
<?php if (get_post_meta($post->ID, 'test_1', true) != '' ) { ?><?php echo get_post_meta($post->ID, 'test_1', true);?><?php } ?>
怎么了？我做错了什么？是否可以以不同的方式显示元框？
这是代码：
add_action( 'init', 'create_xy_taxonomies', 0 );
function create_pc_db_taxonomies() {
register_taxonomy( 'genre', 'post', array( 'hierarchical' => false, 'label' => __('Tests', 'series'), 'query_var' => 'test', 'rewrite' => array( 'slug' => 'tests' ) ) );
$prefix = 'xy_meta_';
$meta_box = array(
'id' => 'xy-meta-box',
'title' => 'Xy tests',
'page' => 'post',
'context' => 'normal',
'priority' => 'high',
'fields' => array(
array(
'name' => 'Test_1',
'id' => 'test_1',
'type' => 'text',
'std' => ''
),
array(
'name' => 'Test_2',
'id' => 'test_2',
'type' => 'select',
'options' => array('','1'),
'std' => ''
),
)
);
add_action('admin_menu', 'mytheme_add_box');
function mytheme_add_box() {
global $meta_box;
add_meta_box($meta_box['id'], $meta_box['title'], 'mytheme_show_box', $meta_box['page'], $meta_box['context'], $meta_box['priority']);
}
function mytheme_show_box() {
global $meta_box, $post;
echo '<input type="hidden" name="mytheme_meta_box_nonce" value="', wp_create_nonce(basename(__FILE__)), '" />';
echo '<table class="form-table">';
foreach ($meta_box['fields'] as $field) {
$meta = get_post_meta($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"' : '', '>', $option, '</option>';
}
echo '</select>';
break;
case 'radio':
foreach ($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'], '"', $meta ? ' checked="checked"' : '', ' />';
break;
}
echo '<td>',
'</tr>';
}
echo '</table>';
}
add_action('save_post', 'mytheme_save_data');
function mytheme_save_data($post_id) {
global $meta_box;
if (!wp_verify_nonce($_POST['mytheme_meta_box_nonce'], basename(__FILE__))) {
return $post_id;
}
if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
return $post_id;
}
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 $post_id;
}
foreach ($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);
}
}
}