[英]AngularJS with ui.router $state not working when async
我在使用AngularJS和ui.router時遇到問題 。
我有一個應用程序,基本上用戶在其中寫信息,然后發送到服務器,並且當服務器回答時,我將當前狀態更改為頻道列表。
我的問題是,通過使用異步系統,我無法更改demos的當前狀態,而不會出現任何錯誤:
以下演示是可以的演示,因為它不使用異步系統(請參閱控制台):
代碼: http : //jsfiddle.net/dievardump/x2tMT/
完整的演示: http : //jsfiddle.net/dievardump/x2tMT/embedded/result/
這是一個不正確的選項(請參閱控制台)。
代碼: http : //jsfiddle.net/dievardump/f9rSQ/
完整的演示: http : //jsfiddle.net/dievardump/f9rSQ/embedded/result/
這兩個示例之間唯一的區別是在狀態“ platform.channels”的聲明中:
console.log('goes to platform.game');
$state.go('platform.game', {
type: 'gameType',
id: 1
});
VS
setTimeout(function () {
console.log('should go to platform.game');
$state.go('platform.game', {
type: 'gameType',
id: 1
});
}, 1000);
完整的演示易於導入本地:
工作方式:
<div ui-view></div>
<script>
var myApp = angular.module('myApp', ['ui.router']);
myApp.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise("/signin");
$stateProvider
.state('platform', {
url: '/platform',
data: {
permissions: ['auth']
},
template: "<section class='platform'>platform<div ui-view></div></section>",
controller: function($state) {
console.log('platformController');
}
});
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider
.state('signin', {
url: "/signin",
template: "<section id='connect' class='connect'><form name='connection' action='' ng-submit='login(connection)'><input placeholder='Choose a nickname' ng-model='nickname' autocomplete='off' /><button><span>Send</span></button></form><p class='error' ng-show='error != null'>{{error}}</p></section>",
controller: function($scope, $state) {
$scope.error = null;
$scope.nickname = null;
$scope.login = function(form) {
var value = $scope.nickname.replace(/[^a-zA-Z0-9]/g, '');
if (value.length >= 3) {
$state.go('platform.channels');
} else {
$scope.error = 'only characters and numbers. length must be >= 3';
}
}
}
});
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider.state('platform.channels', {
url: "/channels",
template: "<section id='channels' class='channels'>channels</section>",
controller: function($state) {
console.log('channelController');
console.log('goes to platform.game');
$state.go('platform.game', {
type: 'gameType',
id: 1
});
}
})
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider.state('platform.game', {
url: "/game/:type/:id",
template: "<section id='game' class='game'>game</section>",
controller: function() {
console.log('gameController');
}
});
});
angular.bootstrap(document, ['myApp']);
</script>
不工作:
<div ui-view></div>
<script>
var myApp = angular.module('myApp', ['ui.router']);
myApp.config(function($stateProvider, $urlRouterProvider) {
$urlRouterProvider.otherwise("/signin");
$stateProvider
.state('platform', {
url: '/platform',
data: {
permissions: ['auth']
},
template: "<section class='platform'>platform<div ui-view></div></section>",
controller: function($state) {
console.log('platformController');
}
});
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider
.state('signin', {
url: "/signin",
template: "<section id='connect' class='connect'><form name='connection' action='' ng-submit='login(connection)'><input placeholder='Choose a nickname' ng-model='nickname' autocomplete='off' /><button><span>Send</span></button></form><p class='error' ng-show='error != null'>{{error}}</p></section>",
controller: function($scope, $state) {
$scope.error = null;
$scope.nickname = null;
$scope.login = function(form) {
var value = $scope.nickname.replace(/[^a-zA-Z0-9]/g, '');
if (value.length >= 3) {
$state.go('platform.channels');
} else {
$scope.error = 'only characters and numbers. length must be >= 3';
}
}
}
});
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider.state('platform.channels', {
url: "/channels",
template: "<section id='channels' class='channels'>channels</section>",
controller: function($state) {
console.log('channelController');
setTimeout(function () {
console.log('should go to platform.game');
$state.go('platform.game', {
type: 'gameType',
id: 1
});
}, 1000);
}
})
});
myApp.config(function($stateProvider, $urlRouterProvider) {
$stateProvider.state('platform.game', {
url: "/game/:type/:id",
template: "<section id='game' class='game'>game</section>",
controller: function() {
console.log('gameController');
}
});
});
angular.bootstrap(document, ['myApp']);
</script>
$ state.go在setTimeout中不起作用的任何原因?
您的演示無法正常工作的原因是超時,它很簡單,當您導致角度知識發生變化時,角度不了解發生的變化,因此不會更新。
解決方案是使用角度方式進行此操作。 angular提供$timeout
服務。
在此處閱讀更多信息: https : //docs.angularjs.org/api/ng/service/ $ timeout
工作(此處已修復了異步演示): http : //jsfiddle.net/f9rSQ/2/
PS,您應該始終使用angular的方式或ng- *指令來處理異步更改,如果您通過純JavaScript進行操作,例如按鈕單擊事件偵聽器等將不會觸發。 為了使它們開火,您可以強制angular運行$digest
循環,這是在使用ng-click
, $http
等時以更清潔的方式實際發生的情況。
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