在 angularjs 中调用另一个控制器下的一个控制器

Question

我想调用LoginController下的Homecontroller。下面是两个控制器的代码：

//Login controller
    app.controller('LoginController', function ($scope, $cookieStore) {
        $cookieStore.put('email','test@gmail.com');
        // need to call Homecontroller here
    });

// Home controller
app.controller('HomeController', function ($scope, $cookieStore, $location) {


      if ($cookieStore.get('email') != null) {
            $scope.wecomeMessage = $cookieStore.get('email');
        }
        else
        {
            $scope.wecomeMessage = "";
        }
    });

Answer 1

我认为您误解了 angular 中控制者的责任。

如何使用 angular 文档中的控制器：

Use controllers to:

Set up the initial state of the $scope object.

Add behavior to the $scope object.

Do not use controllers to:

Manipulate DOM — Controllers should contain only business logic.

Putting any presentation logic into Controllers significantly affects its testability.

Angular has databinding for most cases and directives to encapsulate manual DOM manipulation.

Format input — Use angular form controls instead.

Filter output — Use angular filters instead.

Share code or state across controllers — Use angular services instead.

Manage the life-cycle of other components (for example, to create service instances).

因此，如果您想创建一些可重复使用的代码块，您只需创建一个 angular 服务，该服务将包含具有所需逻辑的功能。然后你可以将它注入到两个控制器，它们将具有必要的功能。

示例：

app.controller('LoginController', function ($scope, $cookieStore, helperService) {
    $cookieStore.put('email', 'test@gmail.com');

    $scope.wecomeMessage = helperService.getMessage();

});

// Home controller
app.controller('HomeController', function ($scope, $cookieStore, $location, helperService) {

    $scope.wecomeMessage = helperService.getMessage();
 });


app.service('helperService', function ($cookieStore) {

    this.getMessage = function () {
        return $cookieStore.get('email') != null ? $cookieStore.get('email') : "";
    };

});

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