Yii2 yii基本应用程序，当使用导航条开始时，yii细枝类设置为0类

我使用yii作为一个基本的应用程序，扩展了yii twig，并使用nav_bar_begin创建了一个导航菜单，但是这个类的设置与我预期的不同，因为这个导航菜单是灰色的，而不是黑色的

当我查看源代码时，我看到：

<nav id="w0" class="navbar navbar-default" 0-class="navbar-inverse navbar-fixed-top">
    <div class="container"><div class="navbar-header">
        <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#w0-collapse">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <a class="navbar-brand" href="/">My Application</a>
    </div>
    <div id="w0-collapse" class="collapse navbar-collapse">
        <ul id="w1" class="navbar-nav navbar-right nav">
            <li class="active"><a href="/">Home</a></li>
            <li><a href="/about">About</a></li>
            <li><a href="/contact">Contact</a></li>
            <li><a href="/login">login</a></li>
        </ul>
    </div>
</div>

这也是关于如何设置yii和twig的config/web.php文件

$params = require __DIR__ . '/params.php';
$db = require __DIR__ . '/db.php';

$config = [
    'id' => 'basic',
    'basePath' => dirname(__DIR__),
    'bootstrap' => ['log'],
    'aliases' => [
        '@bower' => '@vendor/bower-asset',
        '@npm'   => '@vendor/npm-asset',
    ],
    'components' => [
        'request' => [
            // !!! insert a secret key in the following (if it is empty) - this is required by cookie validation
            'cookieValidationKey' => 'ywLqCkq0cMC-cvfVXiGXFnfu2S41_CbC',
        ],
        'cache' => [
            'class' => 'yii\caching\FileCache',
        ],
        'user' => [
            'identityClass' => 'app\models\User',
            'enableAutoLogin' => true,
        ],
        'errorHandler' => [
            'errorAction' => 'site/error',
        ],
        'mailer' => [
            'class' => 'yii\swiftmailer\Mailer',
            // send all mails to a file by default. You have to set
            // 'useFileTransport' to false and configure a transport
            // for the mailer to send real emails.
            'useFileTransport' => true,
        ],
        'log' => [
            'traceLevel' => YII_DEBUG ? 3 : 0,
            'targets' => [
                [
                    'class' => 'yii\log\FileTarget',
                    'levels' => ['error', 'warning'],
                ],
            ],
        ],
        'db' => $db,
        'urlManager' => [
            'enablePrettyUrl' => true,
            'showScriptName' => false,
            'enableStrictParsing' => true,
            //'class' => 'yii\web\UrlManager',
            'baseUrl' => '/',
            'rules' => [
                '/' => 'site/index',
                'about' => 'site/about',
                'contact' => 'site/contact',
                'login' => 'site/login',
            ],
        ],
        /*
        'urlManager' => [
            'enablePrettyUrl' => true,
            'showScriptName' => false,
            'rules' => [
            ],
        ],
        */
        // setting up twig
        'view' => [
            'class' => 'yii\web\View',
            'renderers' => [
                'twig' => [
                    'class' => 'yii\twig\ViewRenderer',
                    'cachePath' => false, // '@runtime/Twig/cache',
                    // Array of twig options:
                    'options' => [
                        'auto_reload' => true,
                        YII_DEBUG ? [ 'debug' => true, ] : [],
                    ],
                    'extensions' => YII_DEBUG ? [ '\Twig_Extension_Debug', ] : [],
                    'globals' => [
                        'html' => '\yii\helpers\Html',
                        'url' => '\yii\helpers\Url',
                        'yii' => 'Yii',
                    ],
                    'uses' => ['yii\bootstrap'],
                ],
            ],
        ],
    ],
    'layout' => 'main.twig',
    'params' => $params,
];

if (YII_ENV_DEV) {
    // configuration adjustments for 'dev' environment
    $config['bootstrap'][] = 'debug';
    $config['modules']['debug'] = [
        'class' => 'yii\debug\Module',
        // uncomment the following to add your IP if you are not connecting from localhost.
        'allowedIPs' => ['127.0.0.1', '::1', '192.168.0.*'],
    ];

    $config['bootstrap'][] = 'gii';
    $config['modules']['gii'] = [
        'class' => 'yii\gii\Module',
        // uncomment the following to add your IP if you are not connecting from localhost.
        'allowedIPs' => ['127.0.0.1', '::1', '192.168.0.*'],
    ];
}

return $config;

---

小部件配置中有错误。替换

    'options': [{
        'class': 'navbar-inverse navbar-fixed-top',
    }],

与

---

啊！非常感谢您指出这一点，我已经尝试解决了一段时间，但看不出问题是什么。回顾一下我的代码，我在第一篇文章中做的是错误的，然后按照您在下面的选项中提到的那样正确地做了。从那以后，我把它们都做成了和你提到的一样的东西，解决了这个问题，再次感谢你@AeroMaxx如果属性中有一些

0-*=”

或

0=“

，通常意味着有一些嵌套数组或忘记为值指定键。

    'options': [{
        'class': 'navbar-inverse navbar-fixed-top',
    }],

    'options': {
        'class': 'navbar-inverse navbar-fixed-top',
    },