我试图根据存储的元值包括一个特定的模板，例如：

如果post meta值为value1, 我想包括不同的模板value2, 我想包括不同的模板等。

以下是我的完整代码：

function wdm_add_meta_box() {

    add_meta_box(
            \'metabox_custom\', \'Plugin Options\', \'wdm_meta_box_callback\', \'product\',\'normal\',\'high\'); 

add\\u操作（“add\\u meta\\u box”、“wdm\\u add\\u meta\\u box”）；

函数wdm\\U meta\\U box\\U回调（$产品）{

    // Add an nonce field so we can check for it later.
    wp_nonce_field( \'wdm_meta_box\', \'wdm_meta_box_nonce\' );

    /*
     * Use get_post_meta() to retrieve an existing value
     * from the database and use the value for the form.
     */
    $value = get_post_meta( $product->ID, \'my_key\', true );//my_key is a meta_key. Change it to whatever you want
    ?>
    <label for="wdm_new_field"><?php _e( "Enable Design Panel:", \'choose_value\' ); ?></label>
    <br />  
    <input type="radio" name="tailor_select" value="value1" <?php checked( $value, \'value1\' ); ?> >Value1<br>
    <input type="radio" name="tailor_select" value="value2" <?php checked( $value, \'value2\' ); ?> >Value2<br>
    <input type="radio" name="tailor_select" value="value3" <?php checked( $value, \'value3\' ); ?> >Value3<br>
    <input type="radio" name="tailor_select" value="value4" <?php checked( $value, \'value4\' ); ?> >Value4<br>
    <input type="radio" name="tailor_select" value="value5" <?php checked( $value,\'value5\'); ?> >Value5<br>
    <input type="radio" name="tailor_select" value="value6" <?php checked( $value,\'value6\'); ?> >Value6<br>

    <?php

函数wdm\\U save\\U meta\\U box\\U data（$product\\U id）{

    /*
     * We need to verify this came from our screen and with proper authorization,
     * because the save_post action can be triggered at other times.
     */

    // Check if our nonce is set.
    if ( !isset( $_POST[\'wdm_meta_box_nonce\'] ) ) {
            return;
    }

    // Verify that the nonce is valid.
    if ( !wp_verify_nonce( $_POST[\'wdm_meta_box_nonce\'], \'wdm_meta_box\' ) ) {
            return;
    }

    // If this is an autosave, our form has not been submitted, so we don\'t want to do anything.
    if ( defined( \'DOING_AUTOSAVE\' ) && DOING_AUTOSAVE ) {
            return;
    }

    // Check the user\'s permissions.
    if ( !current_user_can( \'edit_post\', $product_id ) ) {
            return;
    }


    // Sanitize user input.
    $new_meta_value = ( isset( $_POST[\'tailor_select\'] ) ? sanitize_html_class( $_POST[\'tailor_select\'] ) : \'\' );

    // Update the meta field in the database.
    update_post_meta( $product_id, \'my_key\', $new_meta_value );

添加操作（“save\\u post”、“wdm\\u save\\u meta\\u box\\u data”）；

函数choose\\u选项（$模板）{

$has_customization = get_post_meta( $post->ID, \'my_key\', true );
echo $has_customization;
if( $has_customization == \'value2\')
{
    function wdm_load_template($template)
    {
            $template_slug = basename(rtrim( $template, \'.php\' ));

            if( ($template_slug === \'single-product\' || $template_slug === \'woocommerce\') && is_product() ) 
            {
                $template = WCM_DIR . \'includes/wcm-templates.php\';
            }
            return  $template;
    }
    add_filter( \'template_include\', \'wdm_load_template\', 99);
}

添加\\u操作（“wp”，“选择\\u选项”）；