[英]AngularJS : View doesn't update when a value in $scope changes
I have an html file with a view that gets it's values from an AngularJS scope. 我有一个带有视图的html文件,它从AngularJS范围获取它的值。
<form ng-controller="EmployeesController as emp" class="signed-in" ng-submit="logOutUser()">
<div class="row">
<div class="col-md-10 text-left">
<h5>Your Games, {{emp.username}}</h5>
</div>
<div class="col-md-2">
<button class="btn btn-md btn-primary btn-block" type="submit">Log Out</button>
</div>
</div>
<div class="row store">
<div class="col-md-12">
<div class="panel panel-default">
<div class="panel-heading">Games To Buy</div>
<div class="panel-body">
<table class="table table-striped">
<thead>
<tr>
<th>Game Name</th>
<th>Game Status {{what}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="game in emp.games">
<td>{{game}}</td>
<td>
<button ng-click="buyGame(game.gameId)" type="button" class="btn btn-sm btn-primary btn-block" href="#">Buy</button>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</div>
</form>
. 。
And the js file : 和js文件:
var app = angular.module("MyApp", ['ngRoute']);
app.controller("EmployeesController", function($scope, $http) {
this.games = [{gameName: 'aaa', gameId: '1'},{gameName: 'aaa', gameId: '1'},{gameName: 'aaa', gameId: '1'}];
this.ownedGames = [];
var that = this;
$scope.sellGame = function(gameId) {
var index = that.ownedGames.indexOf(gameId);
that.ownedGames.splice(index, 1);
$.jStorage.set(that.username, that.ownedGames);
}
$scope.$on('$viewContentLoaded', function() {
if($.jStorage.get('Employee') == null)
$scope.logged = false;
else
$scope.logged = true;
$http.get('employees.json').
success(function(data, status, headers, config) {
that.games = data.games;
that.username = $.jStorage.get('Employee');
if($.jStorage.get(that.username) != null)
that.ownedGames = $.jStorage.get(that.username);
});
});
}); });
Ok. 好。 So basically what the problem is, is that the emp.games
variable is empty. 基本上问题是, emp.games
变量是空的。 First of all it gets commented in the rendered HTML page, and second when i debug the page the variable emp.games
is empty. 首先,它在呈现的HTML页面中被注释,第二,当我调试页面时,变量emp.games
为空。 Yet the variable that emp.games is supposed to get its values from, the $scope.games is filled with values as it should be. 然而,emp.games应该从其获取其值的变量,$ scope.games充满了应有的值。 So the problem is that my emp.games
doesn't see that $scope.games was updated in that http request, so IT doesn't update. 所以问题是我的emp.games
没有看到$ scope.games在该http请求中被更新,因此IT不会更新。 I googled as much as i could and found out that i should use $scope.apply, but wherever i used it i got the error $digest already in progress... any ideas? 我尽可能多地用Google搜索,发现我应该使用$ scope.apply,但无论我在哪里使用它,我都会收到错误$ digest正在进行中......有什么想法吗?
Thanks 谢谢
Try check diggest 尝试检查diggest
if (!$scope.$$phase) {
$scope.$apply(function () {
that.games = data.games;
})
}
else
that.games = data.games;
Or you can inject $timeout service and use it like this, it will be better. 或者你可以注入$ timeout服务并像这样使用它,它会更好。
$timeout (function () {
that.games = data.games;
}, 0)
Your controller definition is not valid, please use like this. 您的控制器定义无效,请使用这样的。
app.controller("EmployeesController", ['$scope','$http','$timeout', function($scope, $http, $timeout){
//....
}]
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