javascript – 从变量值动态设置ng-controller

2023年3月19日 239次阅读

我正在使用angularJs和nodejs开发一个应用程序.我们将控制器的名称设置为来自主控制器的变量值.为了更好地解释它,我的index.html看起来像这样：

        <tbody ng-repeat="group in groups">

        <tr ng-repeat="member in group.members" >
            <td rowspan="{{group.members.length}}" ng-hide="$index>=0">
            </td>

            <td>{{member.taskName}}</td>
            <td><div class={{group.colorMe[0]}}>{{member.env}}</div>
                <button class="btn btn-info" ng-controller="member.taskName" ng-click="test( member.taskName , 'env', group.colorMe[0])">Sanity</button>
            </td>

我的主控制器看起来像这样定义组：

  var tasks =['task1','task2','task3','task4','task5'];

      for(i=0;i<tasks.length;i++)

    {

    var group = {
                  "id" : i+1,
                  "members" : [{
                      "taskName":tasks[i].toUpperCase(),
                      "env1":versionMap["env1"+tasks[i]],
                      "env2":versionMap["env2"+tasks[i]],
                      "env3":versionMap["env3"+tasks[i]]

                  }]
                };
              $scope.groups.push(group);
              }

现在,当我单击按钮时,我应该被指向特定的控制器,并且需要将此控制器名称动态设置为member.taskName.有人可以帮我这个吗？

最佳答案 您需要为服务添加一些额外的逻辑.因此它需要新的依赖项,例如：$controller,$compile,$root $scope或$scope.并可选一个$templateCache.模板也是可选的.

DEMO JSFiddle

动态控制器服务：

var controllerTemplate = $templateCache.get(params.templateUrl); // getting inline template string

var templateScope = $rootScope.$new(true); // creating new scope for future controlelr
var templateCtrl = $controller(dynamicControllerName, { // creating controller
     $scope: templateScope // locals stuff that inject in controller           
});

var dynamicControllerElement = angular.element(controllerTemplate); // wrapping template into element

dynamicControllerElement.children().data('$ngControllerController', templateCtrl); // inject controller into element

var compiled = $compile(dynamicControllerElement)(templateScope); // compile all together

$('.container').html(compiled); // putting compiled into DOM (jQuery example)

更具体的代码：

指示

 app.directive('dynamicControllerButton', function(dynamicControllerService){
    return {
      restrict: 'E',
      scope: {
         controllerName: '='
      },
      template: '<button class="btn btn-info">Sanity</button>', //added this comma
      link: function(scope, elem, attrs) {

           dynamicControllerService.createController(scope.controllerName, elem); // we passing also element;

    }

  }

})

服务

app.service('dynamicControllerService', function($rootScope, $controller, $compile){

     this.createController = function(dynamicControllerName, element) {

    // all that stuff in example above

      element.html(compiled); // adding compiled controller in element example ;

     }

})

HTML

    <tr ng-repeat="member in group.members" >
        <td rowspan="{{group.members.length}}" ng-hide="$index>=0">
        </td>

        <td>{{member.serviceName}}</td>
        <td><div class={{group.colorMe[0]}}>{{member.env}}</div>
            <dynamic-controller-button>  data-controller-name="dynamic_set_controller" ng-click="test( member.serviceName , 'env', group.colorMe[0])"></dynamic-controller-button>
        </td>

我希望它会有所帮助

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