如何共享$作用域属性，而不是它在angularjs两个控制器之间的价值？ [英] How to share $scope properties, not its value between two controllers in angularjs?

问题描述

我是新手对Aβ，我试图与另一个控制器共享$ scope.showdropdown指令，使得第二控制器可以调用这个指令在它的身上。

I'm newbie to AJs, and I'm trying to share $scope.showdropdown directive with another controller so that the second controller can call this directive in its body.

.controller('firstCtrl', function($scope){
    $scope.showdropdown = false; // this is part of this controller 

})

.controller('secondCtrl', function($scope){
   if(username and pass correct){
      $scope.showdropdown = true; // I want to call this here, but I can't do it bcoz its not part of the same controller!!! 
   }
})

我试过各种事情，工厂等，并没有运气
有人可以告诉我怎么才能做到这一点，请！

I tried all sorts of thing, factory etc. and had no luck Can someone show me how can this be done please!

推荐答案

如果这是你需要的控制器（即没有的功能，验证或其他模型逻辑）之间共享只简单的数据，你可以使用值服务：

If it's only simple data that you need to share between the controllers (ie no functionality, validation, or other model logic), you can use a value service:

.controller('firstCtrl', function($scope, myVal){
    $scope.shared = myVal; // 'shared' on scope now references value service
    $scope.shared.showdropdown = false;

})
.controller('secondCtrl', function($scope, myVal){
   $scope.shared = myVal;
   if(username and pass correct){
      $scope.shared.showdropdown = true; // updates myVal value
   }
})
.value('myVal', {}) // register service, initializing with an object object

演示

这个概念是一个工厂或服务服务类型和实现，同样是非常相似的。与其中的一个去，如果你需要共享的功能，而不仅仅是数据。工厂例如：

The concept is the same for a factory or service service type and the implementation is very similar. Go with one of these if you need to share functionality, not just data. Factory example:

.controller('firstCtrl', function($scope, MyFactory){
    $scope.shared = MyFactory;
    ...
})
.controller('secondCtrl', function($scope, MyFactory){
    $scope.shared = MyFactory;
    ...
})
.factory('MyFactory', function(){
    var obj = {
        //showdropdown: false
    };

    obj.someFunc = function(){};

    return obj;
})

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