相关疑难解决方法(0)

这是我的控制器

<?php
class Desbest_Brands_Adminhtml_BrandController extends Mage_Adminhtml_Controller_action {
    public function indexAction() {
        //echo "showing 123 works!";
        $this->loadLayout(); $this->renderLayout();
    }

这是我的布局

<?xml version="1.0"?>
<layout version="1.0.0">
<brands_adminhtml_brand_index>
    <reference name="content">
        <block type="brands/adminhtml_brand" name="brand" />
        <block type="newsletter/subscribe" name="left.newsletter" template="newsletter/subscribe.phtml"/>
    </reference>
</brands_adminhtml_brand_index>
</layout>

然而,当我在我的管理员中显示视图时,没有任何东西加载,甚至不是电子邮件订阅表单.