我试图在用户成功登录后隐藏导航栏上的登录选项。我尝试按照以下链接中说明的方式进行操作,但即使在用户登录后登录选项仍然可见。
http://stackoverflow.com/questions/22694536/angularjs-ng-hide-with-different-ng-controller
如有任何帮助,我们将不胜感激。 提前致谢。
这是 application.js 和 index.html
应用程序.js
myApp.controller('NavbarController', [
'$scope',
'$location',
'$modal',
'$rootScope',
'navservice',
'$window',
function ($scope, $location, $modal, $rootScope, navservice, $window) {
init();
function init() {
navservice.hideSignIn($scope, $location);
};
$scope.doCollapse = function() {
$scope.isCollapsed=!$scope.isCollapsed;
};
$scope.$on('EventFromSigninController',function(data){
$scope.signedin = data.signedin;
});
},
]);
myApp.service('navservice', function () {
this.hideSignIn = function ($scope, $location) {
if (null != username && 0 != username.length &&
null != password && 0 != password.length) {
$scope.signedin = true;
} else {
$scope.signedin = false;
}
};
});
myApp.controller('SignInController', [
'$scope',
'$modal',
'navservice',
'$window',
function ($scope, $modal, navservice, $window) {
var signedIn2 = true;
$scope.dblclick = function() {
//change the local tableHideAlias state
signedIn2 = !signedIn2;
// emit the new hideAlias value
$scope.$emit('EventFromSigninController',{signedIn: signedIn2});
};
},
]);
index.html
<nav class="hidden-xs" role="navigation">
<ul class="nav navbar-nav" data-ng-controller="NavbarController">
<a href="#/home" role="button" class="navbar-brand navbar-band-pad">
<img src="img/sampleimg.png" alt="logo">
</a>
<li data-ng-class="{'active':getClass('/home')}"><a href="#/">Home</a></li>
<li class="dropdown">
<a href="#" role="button" class="dropdown-toggle">
Accounts <b class="caret"></b>
</a>
<ul class="dropdown-menu">
<li><a ng-click="signOut()">Sign Out</a></li>
</ul>
</li>
</ul>
<ul class="nav navbar-nav navbar-right" data-ng-controller="NavbarController" ng- hide="signedin">
<li id="signinele" data-ng-class="{'active':getClass('/signin')}" data-ng- controller="SignInController" ng-dbclick="dblclick()">
<a href="#/signin">Sign In</a>
</li>
</ul>
</nav>
最佳答案
您应该使用 $rootScope 来保持用户当前的登录状态。所以像这样:
function login(){
var onSuccessCallback = function(data) {
$rootScope.currentUserSignedIn = true;
$rootScope.currentUser.name = data.name;
};
// Login function to the server comes here
}
在您的 HTML 中,只需添加 ng-show 或 ng-hide 或 ng-if 即可根据您的需要显示或隐藏元素。例如:
<nav>
<a ng-click="login()" ng-hide="currentUserSignedIn">Sign in</a>
<span ng-show="currentUserSignedIn">{{currentUser.name}}</span>
</nav>
在这个例子中,该按钮将在当前用户未登录时显示,并在登录后显示当前登录的用户名。
关于javascript - angularjs ng-显示 : Hide Sign-in option after successful login,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/23737327/