在 angular.js 中的控制器之间共享变量 [英] Sharing a variable between controllers in angular.js
问题描述
我是 angular 的新手，我想知道如何在 angular 的控制器之间共享变量.我正在使用以下脚本 -
在 Main.js 中:
function MainCntl($scope) {- -代码}函数 SearchCtrl($scope, $http) {$scope.url = 'http://10.0.0.13:9000/processAdHoc';$scope.errorM = "没有结果";$scope.search = function() {$http.post($scope.url, { "data" : $scope.keywords}).成功(功能(数据，状态){$scope.status = 状态；$scope.data = 数据；$scope.result = 数据；警报('是');}).错误(功能(数据，状态){$scope.data = 数据 ||请求失败";$scope.status = 状态；警报('否');$scope.result = "失败";});};}在 Index.html 中
</表单>
- -代码<p ng-model="结果">{{结果}}</p>
我正在发送数据并接收响应的ajax一切正常，我的问题如下:
在 SearchCtrl 函数中，我有一个名为 $scope.result 的变量，稍后会在 Index.html 中引用该变量.如果我将包含该变量的 html 代码插入 SearchCtrl 控制器中，它可以正常工作，但如果它在 MainCtrl 控制器中，则它不起作用.我如何在控制器之间共享这个变量.
先谢谢了
使用服务并将其注入到两个控制器，并将您的范围变量引用到服务变量.
示例:
angular.module("yourAppName", []).factory("myService", function(){返回{共享对象:{数据:空}}});函数 MainCtrl($scope, myService) {$scope.myVar = myService.sharedObject;}函数 SearchCtrl($scope, $http, myService) {$scope.myVar = myService.sharedObject;}在你的模板中做:
{{myVar.data}}查看示例使用 Angular v1.1.5
你把它放在一个内部对象中的原因是为了保留你的引用，如果你保持它没有sharedObject"，并且改变那个对象，你的绑定将指向旧的引用并且不会在模板.
I'm new to angular and I'm wondering how I can share a variable between controllers in angular. I'm using the following scripts -
In Main.js:
function MainCntl($scope) {
---code
}
function SearchCtrl($scope, $http) {
$scope.url = 'http://10.0.0.13:9000/processAdHoc';
$scope.errorM = "No results";
$scope.search = function() {
$http.post($scope.url, { "data" : $scope.keywords}).
success(function(data, status) {
$scope.status = status;
$scope.data = data;
$scope.result = data;
alert('yes');
})
.
error(function(data, status) {
$scope.data = data || "Request failed";
$scope.status = status;
alert('no');
$scope.result = "failed";
});
};
}
In Index.html
<body ng-controller="MainCntl" >
---code
<div ng-controller="SearchCtrl">
<form class="well form-search">
<div class="ui-widget">
<label for="tags"></label>
<a ng-click="search()"><input type="image" src="../../images/search1.png" class="searchbox_submit" /></a>
<input ng-model="keywords" placeholder="Shadow Search" id="tags" class="input-medium search-query rounded" />
</div>
</form>
</div>
---code
<p ng-model="result">
{{result}}
</p>
</body>
Everything works well with the ajax I'm sending data and receiving a response, my question is as follows:
In the SearchCtrl function I have a variable called $scope.result that is later referred to in Index.html. If I insert the html code that contains that variable into the SearchCtrl controller it works fine but if it is in the MainCtrl controller it does not work. How can I share this variable between the controllers.
Thanks ahead
Use a service and inject it to both controllers and refer your scope vars to the services variable.
Example:
angular.module("yourAppName", []).factory("myService", function(){
return {sharedObject: {data: null } }
});
function MainCtrl($scope, myService) {
$scope.myVar = myService.sharedObject;
}
function SearchCtrl($scope, $http, myService) {
$scope.myVar = myService.sharedObject;
}
In your template do:
{{myVar.data}}
See an example Uses Angular v1.1.5
The reason you put it in an inner object is to preserve your references, if you keep it without a "sharedObject", and change that object, your binding will be pointing to the old reference and wouldn't show anything in the template.
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