AngularJs指令与动态控制器和模板

时间:2015-01-19 09:48:29

标签: javascript angularjs angularjs-directive angularjs-scope

我想创建一个带有动态控制器的动态视图的指令。控制器和模板视图来自服务器。

指令

var DirectivesModule = angular.module('BPM.Directives', []);
(function () {
    'use strict';

    angular
        .module('BPM.Directives')
        .directive('bpmCompletedTask', bpmCompletedTask);

    bpmCompletedTask.$inject = ['$window'];

    function bpmCompletedTask ($window) {
        // Usage:
        //     <bpmCompletedTask></bpmCompletedTask>
        // Creates:
        // 
        var directive = {
            link: link,
            restrict: 'E',
            scope: {
                type: '=',
                taskdata: '=',
                controllername:'@'
            },
            template: '<div ng-include="getContentUrl()"></div>',
            controller: '@',
            name: 'controllername'
            };
        return directive;

        function link(scope, element, attrs) {
            scope.getContentUrl = function () {
                return '/app/views/TasksViews/' + scope.type + '.html';
            }
            scope.getControllerName = function ()
            {
                console.warn("Controller Name is " + scope.type);
                return scope.type;
            }
        }
    }

})();

我在这里试图使用指令

<div ng-controller="WorkflowHistoryController as vm">
    <h2>Workflow History</h2>
    <h3>{{Id}}</h3>
    <div ng-repeat="workflowStep in CompletedWorkflowSteps">
        <bpm-completed-task controllername="workflowStep.WorkflowTaskType.DataMessageViewViewName" taskdata="workflowStep.WorkflowTaskOutcome.TaskOutcome" type="workflowStep.WorkflowTaskType.DataMessageViewViewName">
        </bpm-completed-task>
    </div>    
</div>

现在的问题是,当指令获取控制器名称时,它将其作为文字字符串而不是参数。

可行吗? 如果它不可行,用控制器创建动态视图并在ng-repeat中动态显示它们的最佳解决方案是什么?

谢谢,

更新1月20日我刚刚更新了我的代码,以防有人对此感兴趣。所有的积分都归@Meligy所有。

第一指令:

(function () {
    'use strict';

    angular
        .module('BPM.Directives')
        .directive('bpmCompletedTask', bpmCompletedTask);

    bpmCompletedTask.$inject = ['$compile', '$parse'];

    function bpmCompletedTask ($compile, $parse) {
        var directive = {
            link: function (scope, elem, attrs) {
                console.warn('in the first directive - before if');
                if (!elem.attr('bpm-completed-task-inner'))
                {
                    console.warn('in the first directive');
                    var name = $parse(elem.attr('controllername'))(scope);
                    console.warn('Controller Name : ' + name);
                    elem = elem.removeAttr('bpm-completed-task');
                    elem.attr('controllernameinner', name);
                    elem.attr('bpm-completed-task-inner', '');
                    $compile(elem)(scope);
                }
            },
            restrict: 'A',
            };
        return directive;        
    }

})();

第二指令

angular
.module('BPM.Directives')
.directive('bpmCompletedTaskInner',['$compile', '$parse',
function ($window, $compile, $parse) {
    console.warn('in the second directive');
    return {
        link: function (scope, elem, attrs) {
            console.warn('in the second directive');
            scope.getContentUrl = function () {
                return '/app/views/TasksViews/' + scope.type + '.html';
            }
        },
        restrict: 'A',
        scope: {
            type: '=',
            taskdata: '=',
            controllernameinner: '@'
        },
        template: '<div ng-include="getContentUrl()"></div>',
        controller: '@',
        name: 'controllernameinner'
    };

}]);

Html

 <div ng-repeat="workflowStep in CompletedWorkflowSteps">
        <div bpm-completed-task controllername="workflowStep.WorkflowTaskType.DataMessageViewViewName" taskdata="workflowStep.WorkflowTaskOutcome.TaskOutcome"
                            type="workflowStep.WorkflowTaskType.DataMessageViewViewName">
        </div>
    </div>

1 个答案:

答案 0 :(得分:3)

<强>更新

我得到了它,但它真的很难看。检查:

http://jsfiddle.net/p6Hb4/13/

你的例子有很多动人的东西,所以这个很简单,但你做了什么。

基本上你需要一个包装器指令,它接受JS对象并转换为字符串属性,然后你可以使用هى你的指令用于其他一切(模板,范围等)。

更新2:

代码内联:

var app = angular.module('myApp', []).
directive('communicatorInner', ["$parse", "$compile",
  function($parse, $compile) {
    return {
      restrict: 'A',
      template: "<input type='text' ng-model='message'/><input type='button' value='Send Message' ng-click='sendMsg()'><br/>",
      scope: {
        message: '='
      },
      controller: '@'
    };
  }
]).
directive('communicator', ['$compile', '$parse',
  function($compile, $parse) {
    return {
      restrict: 'E',
      link: function(scope, elem) {
        if (!elem.attr('communicator-inner')) {
          var name = $parse(elem.attr('controller-name'))(scope);
          elem = elem.removeAttr('controller-name')
          elem.attr('communicator-inner', name);
          $compile(elem)(scope);
        }
      }
    };
  }
]).
controller("PhoneCtrl", function($scope) {
  $scope.sendMsg = function() {
    alert($scope.message + " : sending message via Phone Ctrl");
  }
}).
controller("LandlineCtrl", function($scope) {
  $scope.sendMsg = function() {
    alert($scope.message + " : sending message via Land Line Ctrl ");
  }
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.3.9/angular.min.js"></script>

<div ng-app="myApp">

<div ng-init="test = {p: 'PhoneCtrl', l: 'LandlineCtrl' }">
  <communicator controller-name="test.p" message="'test1'"></communicator>
  <communicator controller-name="test.l"></communicator>

</div>
  
  
</div>

原创(现在不相关但可以帮助其他相关问题)

是的,它应该有用。

使用Angular 1.3进行测试:

http://jsfiddle.net/p6Hb4/9/

要检查的事项:

  • 是否定义了控制器并将其添加到模块中?它不会起作用

    如果控制器只是一个全局功能,它将无法工作。必须通过<myModule>.controller("<controllerName>", <functiion>) API

  • 添加
  • ng-controller是否有效?只需将其添加到模板

    即可

    同样,在指令工作之外直接使用ng-controller?