我有两个div与AngularJS相同NG控制器，如何才能让他们共享信息？ [英] I have two divs with the same ng-controller in AngularJS, how can I make them share information?

问题描述

我在我的html code两个不同的div标签引用在AngularJS同一个控制器。我怀疑的是，由于这些div都是没有嵌套他们每个人都有自己的控制器的实例，因此数据是在两个不同的。

 ＆LT; D​​IV NG控制器=AlertCtrl＆GT;
＆LT; UL＆GT;
    ＆LT;李NG重复=警戒警报中＆GT;
        ＆LT; D​​IV CLASS =span4＆GT; {{alert.msg}}＆LT; / DIV＆GT;
    ＆LT; /李＆GT;
＆LT; / UL＆GT;
＆LT; / DIV＆GT;
＆LT; D​​IV NG控制器=AlertCtrl＆GT;
＆LT;形式NG提交=addAlert（）＆GT;
    ＆LT;按钮式=提交级=BTN＆gt;添加警报＆LT; /按钮＆GT;
＆LT; /表及GT;
＆LT; / DIV＆GT;
 

我知道这很容易通过在第一个div按键是固定的​​，但我觉得这是一个非常干净和简单的例子来表达什么，我想要的目的。如果我们按下按钮，添加另一个目的是我们的警示阵列的变化会不会反映在第一个div。

 函数AlertCtrl（$范围）{$ scope.alerts = [{
    类型：'错误'，
    味精：哦，糟糕！改变一些事情，并尝试重新提交。
}，{
    类型：'成功'，
    味精：干得好！你成功读取这个重要的警报消息。
}];$ scope.addAlert =功能（）{
    $ scope.alerts.push（{
        类型：'sucess'，
        味精：另一个警报！
    }）;
};
}
 

解决方案

这是一个非常普遍的问题。看来，最好的办法是创建那么之间的服务/价值和份额。

  mod.service（'yourService'，函数（）{
  this.sharedInfo =默认值;
}）;
功能AlertCtrl（$范围，yourService）{
  $ scope.changeSomething =功能（）{
    yourService.sharedInfo ='从控制器之一另一个值';
  }  $ scope.getValue =功能（）{
    返回yourService.sharedInfo;
  }
}
 

 ＆LT; D​​IV NG控制器=AlertCtrl＆GT; {{的getValue（）}}＆LT; / DIV＆GT;
＆LT; D​​IV NG控制器=AlertCtrl＆GT; {{的getValue（）}}＆LT; / DIV＆GT;
 

I have two different div tags in my html code referencing the same controller in AngularJS. What I suspect is that since these divs aren't nested they each have their own instance of the controller, thus the data is different in both.

<div ng-controller="AlertCtrl">
<ul>
    <li ng-repeat="alert in alerts">
        <div class="span4">{{alert.msg}}</div>
    </li>
</ul>
</div>        
<div ng-controller="AlertCtrl">
<form ng-submit="addAlert()">
    <button type="submit" class="btn">Add Alert</button>
</form>
</div>

I know this could easily be fixed by including the button in the first div but I feel this is a really clean and simple example to convey what I am trying to achieve. If we were to push the button and add another object to our alerts array the change will not be reflected in the first div.

function AlertCtrl($scope) {

$scope.alerts = [{
    type: 'error',
    msg: 'Oh snap! Change a few things up and try submitting again.'
}, {
    type: 'success',
    msg: 'Well done! You successfully read this important alert message.'
}];

$scope.addAlert = function() {
    $scope.alerts.push({
        type: 'sucess',
        msg: "Another alert!"
    });
};
}

解决方案

This is a very common question. Seems that the best way is to create a service/value and share between then.

mod.service('yourService', function() {
  this.sharedInfo= 'default value';
});


function AlertCtrl($scope, yourService) {
  $scope.changeSomething = function() {
    yourService.sharedInfo = 'another value from one of the controllers';
  }

  $scope.getValue = function() {
    return yourService.sharedInfo;
  }
}

<div ng-controller="AlertCtrl">{{getValue()}}</div>
<div ng-controller="AlertCtrl">{{getValue()}}</div>

这篇关于我有两个div与AngularJS相同NG控制器，如何才能让他们共享信息？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！