如何使用ui-router仅在某些页面上附加导航栏？ [英] How to attach navbar only on certain pages using ui-router?

问题描述

如何在除登陆页面之外的每个页面上显示导航栏，以便不必在每个所需页面上附加导航栏文件？现在我已经在主应用程序布局上附加了导航栏，应如何处理以保持干燥？

How to display a navbar on every page except landingpage, so that not have to attach a navbar file on each of needed pages? Now I have enclosed navbar on main app layout, how it should be handled to keep it DRY?

演示（每页都有导航栏）：

Demo (with navbar on each page):

var App = angular.module('app', ['ui.router']);
App.config(function($stateProvider, $urlRouterProvider) {
  $stateProvider
    .state('home', {
      url: '/home',
      templateUrl: 'home.html'
    })
    .state('about', {
      url: '/about',
      templateUrl: 'about.html'
    }).state('landingpage', {
      url: '/landingpage',
      templateUrl: 'landingpage.html'
    });
  $urlRouterProvider.otherwise('/home');
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.8/angular-ui-router.min.js"></script>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet" type="text/css" />

<div ng-app="app">
  <div ng-include="'navbar.html'"></div>

  <div class="container">
    <div ui-view></div>
  </div>

  <script type="text/ng-template" id="navbar.html">
    <nav class="navbar navbar-inverse" role="navigation">
      <div class="navbar-header">
        <a class="navbar-brand" ui-sref="landingpage">LandingPage</a>
      </div>
      <ul class="nav navbar-nav">
        <li><a ui-sref="home">Home</a></li>
        <li><a ui-sref="about">About</a></li>
        <li ng-hide="signedIn()"><a href="/login">Log In</a></li>
        <li ng-show="signedIn()"><a ng-click="logout()">Log Out</a></li>
      </ul>
    </nav>
  </script>

  <script type="text/ng-template" id="home.html">
    <h1>The Homey Page</h1>
  </script>

  <script type="text/ng-template" id="about.html">
    <h1>The About Page</h1>
  </script>

  <script type="text/ng-template" id="landingpage.html">
    <h1>Landing Page</h1>
    <a ui-sref="home">Home</a>
  </script>
</div>

推荐答案

创建命名视图，例如< div ui-view name =nav>< / div> 并按州查看设置templateUrl 。对于登陆页状态，只是不为 nav 视图提供templateUrl，它不会呈现导航栏。

Created named views like <div ui-view name="nav"></div> and set the templateUrl by view by state. For the landingpage state, just don't provide a templateUrl for the nav view and it won't render the navbar.

更新：隐藏登陆页面不是 home 州。

var App = angular.module('app', ['ui.router']);
App.config(function($stateProvider, $urlRouterProvider) {
  $stateProvider
    .state('home', {
      url: '/home',
      views: {
        nav: {
          templateUrl: 'navbar.html'
        },
        content: {
          templateUrl: 'home.html'
        }
      }
    })
    .state('about', {
      url: '/about',
      views: {
        nav: {
          templateUrl: 'navbar.html'
        },
        content: {
          templateUrl: 'about.html'
        }
      } 
    }).state('landingpage', {
      url: '/landingpage',
      views: {
        content: {
          templateUrl: 'landingpage.html'
        }
      } 
    });
  $urlRouterProvider.otherwise('/home');
});

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.8/angular-ui-router.min.js"></script>
<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.1/css/bootstrap.min.css" rel="stylesheet" type="text/css" />

<div ng-app="app">
  <div ui-view name="nav"></div>

  <div class="container">
    <div ui-view name="content"></div>
  </div>

  <script type="text/ng-template" id="navbar.html">
    <nav class="navbar navbar-inverse" role="navigation">
      <div class="navbar-header">
        <a class="navbar-brand" ui-sref="landingpage">LandingPage</a>
      </div>
      <ul class="nav navbar-nav">
        <li><a ui-sref="home">Home</a></li>
        <li><a ui-sref="about">About</a></li>
        <li ng-hide="signedIn()"><a href="/login">Log In</a></li>
        <li ng-show="signedIn()"><a ng-click="logout()">Log Out</a></li>
      </ul>
    </nav>
  </script>

  <script type="text/ng-template" id="home.html">
    <h1>The Homey Page</h1>
  </script>

  <script type="text/ng-template" id="about.html">
    <h1>The About Page</h1>
  </script>

  <script type="text/ng-template" id="landingpage.html">
    <h1>Landing Page</h1>
    <a ui-sref="home">Home</a>
  </script>
</div>

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