将动态控制器传递给角度指令

Question

i am familiar with the syntax of controller & name but i'm trying to create a generic directive that will get a list of items and for each item i need to specify a controller. 我熟悉控制器和名称的语法，但是我试图创建一个通用指令，该指令将获取项目列表，并且需要为每个项目指定一个控制器。

This is my main directive: 这是我的主要指令：

function controlPanel() {
    var directive = {
        restrict: 'E',
        replace: true,
        scope: {
            controlPanelItems: "=sbControlPanelItems"  
        },
        templateUrl: 'control-panel.html',
        link: link
    };
    return directive;

    function link(scope, element) {
    }

}

Here is the directive template: 这是指令模板：

<sb-control-panel-item ng-repeat="controlPanelItem in controlPanelItems"
                                         sb-title="controlPanelItem.title"
                                         sb-template-url="controlPanelItem.templateUrl"
                                         sb-control-panel-item-controller="controlPanelItem.controller"></sb-control-panel-item>

My issue is with the sb-control-panel-item-controller attribute. 我的问题是sb-control-panel-item-controller属性。

Angular throws exception when i'm passing variable, it work's great when i'm passing simple string (the name of the controller). 当我传递变量时，Angular会引发异常，当我传递简单字符串（控制器的名称）时，它的工作效果很好。

Here is the code of the control-panel-item directive: 这是control-panel-item指令的代码：

function controlPanelItem() {
    var directive = {
        restrict: 'E',
        replace: true,
        scope: {
            title: '=sbTitle',
            templateUrl: '=sbTemplateUrl'
        },
        templateUrl: 'control_panel_item.html',
        controller: '@',
        name: 'sbControlPanelItemController',
        link: link
    };
    return directive;

    function link(scope, iElement, iAttributes, controller) {

    }

}

Maybe there is a way to inject the controller through the link function and then i'll just pass it through the scope? 也许有一种方法可以通过链接功能注入控制器，然后将其通过示波器？

Answer 1

You can use the $controller service to instantiate whatever controller dynamically inside the directive, check this plunkr . 您可以使用$ controller服务在指令内动态实例化任何控制器，请检查此plunkr 。 Just bear in mind that if you wanted to specify a controller statically now, you would need to enclose it in single quotes. 请记住，如果要立即静态指定控制器，则需要将其用单引号引起来。

Basically the code would be like: 基本上，代码是这样的：

function MainCtrl() {
  this.firstCtrl = 'FirstCtrl';
  this.secondCtrl = 'SecondCtrl';
}


function FirstCtrl() {
  this.name = 'First Controller';
}

function SecondCtrl() {
  this.name = 'Second Controller';
}


function fooDirective() {
  return {
    scope: {
      ctrl: '='
    },
    template: '<div>{{foo.name}}</div>',
    controller: ['$controller', '$scope', function($controller, $scope) {
      var foo = $controller($scope.ctrl, {$scope: $scope});
      return foo;
    }],
    controllerAs: 'foo',
    link: function ($scope, $element, $attrs, $ctrl) {
      console.log($scope.ctrl);
    }
  };
}

angular
  .module('app', [])
  .directive('fooDirective', fooDirective)
  .controller('MainCtrl', MainCtrl)
  .controller('FirstCtrl', FirstCtrl)
  .controller('SecondCtrl', SecondCtrl);

and this would be the HTML 这就是HTML

<!DOCTYPE html>
<html>

  <head>
    <script data-require="angular.js@1.5.8" data-semver="1.5.8" src="https://code.angularjs.org/1.5.8/angular.js"></script>
    <link rel="stylesheet" href="style.css" />
    <script src="script.js"></script>
  </head>

  <body ng-app="app" ng-controller="MainCtrl as main">
    <h1>
      Test
    </h1>

    <foo-directive ctrl="main.firstCtrl">
      "name: " {{foo.name}}
    </foo-directive>


    <foo-directive ctrl="main.secondCtrl">
      {{foo.name}}
    </foo-directive>
  </body>

</html>

======================================================================== WRONG OLD ANSWER ================================================== ====================== 错误的旧答案

From this blog entry seems to be an undocumented property that allows you to do exactly what you need. 在此博客条目中似乎是一个未记录的属性，可让您完全执行所需的操作。

function FirstCtrl() {
  this.name = 'First Controller';
}

function SecondCtrl() {
  this.name = 'Second Controller';
}

function fooDirective() {
  return {
    scope: {},
    name: 'ctrl',
    controller: '@',
    controllerAs: 'foo',
    template: '<div></div>',
    link: function ($scope, $element, $attrs, $ctrl) {

    }
  };
}

angular
  .module('app', [])
  .directive('fooDirective', fooDirective)
  .controller('FirstCtrl', FirstCtrl)
  .controller('SecondCtrl', SecondCtrl);

So all you need to do in your directive is add a property name linked to the attribute you will use with the name of your controller. 因此，您在指令中需要做的就是添加一个属性名称，该名称链接到将与控制器名称一起使用的属性。

<foo-directive ctrl="FirstCtrl"></foo-directive>
<foo-directive ctrl="SecondCtrl"></foo-directive>

If your directive, as per your question, needs to be from a property rather than a string, use {{}} notation: 如果您的指令（根据您的问题）需要来自属性而不是字符串，请使用{{}}表示法：

<sb-control-panel-item ng-repeat="controlPanelItem in controlPanelItems"
                                         sb-title="controlPanelItem.title"
                                         sb-template-url="controlPanelItem.templateUrl"
                                         sb-control-panel-item-controller="{{controlPanelItem.controller}}"></sb-control-panel-item>

将动态控制器传递给角度指令

问题描述

1 个解决方案

解决方案1
4 已采纳 2016-10-28 08:52:11

将动态控制器传递给角度指令

问题描述

1 个解决方案

解决方案1 4 已采纳 2016-10-28 08:52:11

解决方案1
4 已采纳 2016-10-28 08:52:11