[英]Angularjs : how to load data on a partial?
I am working with Angular and i am trying to update data of a ng-view when we click on the button but it's not working. 我正在使用Angular,并且在我们单击按钮时尝试更新ng-view的数据,但是它不起作用。 Here my code snippet.
这是我的代码段。 main page
主页
<body ng-app="app">
<div ng-controller="MyController" >
<a href="#" ng-click="loadDatas()">Load datas</a>
<div ng-view></div>
</div>
</body>
The ng-view: ng-view:
<div>
{{myValue}}
</div>
<div>
<li ng-repeat ="data in datas">
{{data.name}} || {{data.value}}
</li>
</div>
The loadDatas function : loadDatas函数:
$scope.loadDatas = function(){
$http.get('data.json')
.then(function(res){
$scope.datas = res.data;
});
};
I want to load datas when the link is clicked.But it's not working. 我想在单击链接时加载数据。但是它不起作用。 I have a plunker here if someone could help me.
如果有人可以帮助我,我在这里有个小伙子 。 Thanks
谢谢
Since it's an async call, the easiest way would be to wrap the var change in a $timeout callback: 由于它是一个异步调用,所以最简单的方法是将var更改包装在$ timeout回调中:
$scope.loadDatas = function(){
$http.get('data.json')
.then(function(res){
$timeout(function(){
$scope.datas = res.data;
}, 0);
});
};
This basically forces a scope digest without you having to worry about the digest phase. 基本上,这将强制作用域摘要,而您不必担心摘要阶段。 Of course, don't forget to inject $timeout into the controller.
当然,不要忘记将$ timeout注入控制器。
If you still want to do the digest manually, you can do $scope.$apply()
. 如果仍要手动执行摘要,则可以执行
$scope.$apply()
。
You also need to fix your JSON as I have shown how you in the comments: 您还需要修复JSON,就像我在注释中显示的一样:
{"name":"Dan","value":"13"},
{"name":"John","value":"34"},
etc...
No need to assign the same controller twice. 无需两次分配相同的控制器。
Specifying the controller in the route cause the controller to spawn a new scope (and plus one each time that anchor is clicked, unless you remove the href attribute or block it in another way). 在路由中指定控制器会导致控制器产生一个新的作用域(每次单击锚点都会加一个作用域,除非您删除href属性或以其他方式阻止它)。 I fixed it by removing the controller directive:
我通过删除controller指令修复了它:
when('/', {
templateUrl: 'partial.html'
}).
So, there was no need to specify a controller unless it's a different controller than the one the ng-view is inside of. 因此,无需指定控制器,除非它是与ng-view所在的控制器不同的控制器。 In your case, that was not the case (you only used a controller that the view is already in) and it was causing two different controllers/scopes (even more if the href attribute is present in the anchor when you click it) to spawn and
$scope.datas
in one scope is not the $scope.datas
in the scope that was bound to the partial. 在您的情况下,情况并非如此(您仅使用视图已在其中的控制器),并且这导致了两个不同的控制器/作用域(如果您在锚点上单击时存在href属性,甚至还有更多)和
$scope.datas
在一个范围不是$scope.datas
在被绑定到局部范围。
A different variable name would work because of the scope parent/child inheritance; 由于范围父/子继承,因此可以使用其他变量名。 so if the variable names don't match, a parent scope variable would be available in the child scope without specific definition.
因此,如果变量名称不匹配,则在没有特定定义的情况下,子作用域中将提供父作用域变量。
Here is the working version: http://plnkr.co/edit/QWPFAakvNEdJzU50LKSx?p=preview 这是工作版本: http : //plnkr.co/edit/QWPFAakvNEdJzU50LKSx?p=preview
You forgot to inject the $http
in your controller : 您忘记将
$http
注入到控制器中 :
app.controller("MyController", function($scope, $http) {
Take a look at this one: var name changed plnkr . 看一看: var name更改为plnkr 。
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