你可能会认为这很简单add_post_type_support( \'cptslug\', \'page-attributes\' ); 但事实并非如此。If you check the source 您将看到模板下拉列表仅限于page 仅post类型。还有a note in the Codex 以及对closed Trac ticket 关于这个话题。
您可以通过复制核心函数、进行小编辑并添加新框，将该框添加到CPT中。
function my_cpt_attributes_meta_box($post) {
$post_type_object = get_post_type_object($post->post_type);
if ( $post_type_object->hierarchical ) {
$dropdown_args = array(
\'post_type\' => $post->post_type,
\'exclude_tree\' => $post->ID,
\'selected\' => $post->post_parent,
\'name\' => \'parent_id\',
\'show_option_none\' => __(\'(no parent)\'),
\'sort_column\' => \'menu_order, post_title\',
\'echo\' => 0,
);
$dropdown_args = apply_filters( \'page_attributes_dropdown_pages_args\', $dropdown_args, $post );
$pages = wp_dropdown_pages( $dropdown_args );
if ( ! empty($pages) ) {
?>
<p><strong><?php _e(\'Parent\') ?></strong></p>
<label class="screen-reader-text" for="parent_id"><?php _e(\'Parent\') ?></label>
<?php echo $pages; ?>
<?php
} // end empty pages check
} // end hierarchical check.
$template = get_post_meta($post->ID,\'_wp_page_template\',true);
?>
<p><strong><?php _e(\'Template\') ?></strong></p>
<label class="screen-reader-text" for="page_template"><?php _e(\'Page Template\') ?></label><select name="page_template" id="page_template">
<option value=\'default\'><?php _e(\'Default Template\'); ?></option>
<?php page_template_dropdown($template); ?>
</select>
<p><strong><?php _e(\'Order\') ?></strong></p>
<p><label class="screen-reader-text" for="menu_order"><?php _e(\'Order\') ?></label><input name="menu_order" type="text" size="4" id="menu_order" value="<?php echo esc_attr($post->menu_order) ?>" /></p>
<p><?php if ( \'page\' == $post->post_type ) _e( \'Need help? Use the Help tab in the upper right of your screen.\' ); ?></p>
<?php
}
function add_my_cpt_attributes_meta_box() {
add_meta_box(
\'my_cpt_attributes_meta_box\',
\'My Box Name\',
\'my_cpt_attributes_meta_box\',
\'book\',
\'side\',
\'core\'
);
}
add_action( \'add_meta_boxes\', \'add_my_cpt_attributes_meta_box\' );
如果测试该代码，您会注意到该框会出现，但数据不会保存。
Here is why.
我们必须自己保存数据。
function my_save_cpt_template($post_ID,$post) {
$page_template = (isset($_POST[\'page_template\'])) ? $_POST[\'page_template\'] : false;
$page_templates = wp_get_theme()->get_page_templates();
// var_dump($page_template,$page_templates,\'default\' != $page_template && ! isset( $page_templates[ $page_template ] )); die;
if ( \'default\' != $page_template && ! isset( $page_templates[ $page_template ] ) ) {
if ( $wp_error )
return new WP_Error(\'invalid_page_template\', __(\'The page template is invalid.\'));
else
return 0;
}
update_post_meta($post_ID, \'_wp_page_template\', $page_template);
}
add_action(\'save_post_cptslug\',\'my_save_cpt_template\',1,2);
现在应该保存，但模板不会加载。
Here is why. get_single_template 之前运行
get_page_template, 和
get_page_template 是查找专用模板的内容。因此，我们需要自己加载该模板。
add_action(
\'template_include\',
function ($template) {
global $post;
if (is_singular() && isset($post->post_type) && \'book\' === $post->post_type) {
$new = get_post_meta($post->ID,\'_wp_page_template\',true);
$new = locate_template($new);
if (!empty($new)) {
$template = $new;
}
}
return $template;
}
);
几乎未经测试。可能是马车。买主注意事项。不退款。
