Yii2-Bootstrap: Object of class yii\bootstrap\NavBar could not be converted to string 错误

Question

我即将在 yii2 中集成 twitter bootstrap 主题。我在 bootstrapThemeAsset 和 bootstrapPluginAsset 中添加了 css 和 js 文件。尝试将导航栏转换为 bootstrap 导航栏，如下所示。

    <?= NavBar::begin(['class' => 'navbar-default navbar-static-side'])?>
    <!--<nav class="navbar-default navbar-static-side" role="navigation">-->

th 抛出异常

PHP Recoverable Error – yii\base\ErrorException
Object of class yii\bootstrap\NavBar could not be converted to string

无法得到这个..

Answer 1

NavBar::begin 启动小部件，而不是 return 字符串

使用

 <?php NavBar::begin(['class' => 'navbar-default navbar-static-side'])?>

P.S>

 <?= NavBar::begin(['class' => 'navbar-default navbar-static-side'])?>

与

相同

 <?php echo NavBar::begin(['class' => 'navbar-default navbar-static-side'])?>

Yii2-Bootstrap: Object of class yii\bootstrap\NavBar could not be converted to string 错误

Yii2-Bootstrap: Object of class yii\bootstrap\NavBar could not be converted to string Error

yii2

yii2-advanced-app