我有一个指令,这是代码:

.directive('map', function() {
    return {
        restrict: 'E',
        replace: true,
        template: '<div></div>',
        link: function($scope, element, attrs) {

            var center = new google.maps.LatLng(50.1, 14.4); 
            $scope.map_options = {
                zoom: 14,
                center: center,
                mapTypeId: google.maps.MapTypeId.ROADMAP
            };
            // create map
            var map = new google.maps.Map(document.getElementById(attrs.id), $scope.map_options);
            var dirService= new google.maps.DirectionsService();
            var dirRenderer= new google.maps.DirectionsRenderer()

            var showDirections = function(dirResult, dirStatus) {
                if (dirStatus != google.maps.DirectionsStatus.OK) {
                    alert('Directions failed: ' + dirStatus);
                    return;
                  }
                  // Show directions
                dirRenderer.setMap(map);
                //$scope.dirRenderer.setPanel(Demo.dirContainer);
                dirRenderer.setDirections(dirResult);
            };

            // Watch
            var updateMap = function(){
                dirService.route($scope.dirRequest, showDirections); 
            };    
            $scope.$watch('dirRequest.origin', updateMap);

            google.maps.event.addListener(map, 'zoom_changed', function() {
                $scope.map_options.zoom = map.getZoom();
              });

            dirService.route($scope.dirRequest, showDirections);  
        }
    }
})

我想在用户操作上调用updateMap()。操作按钮不在指令上。

从控制器调用updateMap()的最佳方法是什么?


当前回答

如何在页面控制器中获取指令的控制器:

write a custom directive to get the reference to the directive controller from the DOM element: angular.module('myApp') .directive('controller', controller); controller.$inject = ['$parse']; function controller($parse) { var directive = { restrict: 'A', link: linkFunction }; return directive; function linkFunction(scope, el, attrs) { var directiveName = attrs.$normalize(el.prop("tagName").toLowerCase()); var directiveController = el.controller(directiveName); var model = $parse(attrs.controller); model.assign(scope, directiveController); } } use it in the page controller's html: <my-directive controller="vm.myDirectiveController"></my-directive> Use the directive controller in the page controller: vm.myDirectiveController.callSomeMethod();

注意:给出的解决方案只适用于元素指令的控制器(标签名用于获取所需指令的名称)。

其他回答

基于Oliver的回答-你可能并不总是需要访问指令的内部方法,在这种情况下,你可能不想创建一个空白对象,并添加一个控件attr到指令,只是为了防止它抛出错误(不能设置属性“takeTablet”为undefined)。

你也可能想在指令的其他地方使用这个方法。

我会加上一个检查,以确保范围。控件存在,并以与显示模块模式类似的方式为其设置方法

app.directive('focusin', function factory() {
  return {
    restrict: 'E',
    replace: true,
    template: '<div>A:{{control}}</div>',
    scope: {
      control: '='
    },
    link : function (scope, element, attrs) {
      var takenTablets = 0;
      var takeTablet = function() {
        takenTablets += 1;  
      }

      if (scope.control) {
        scope.control = {
          takeTablet: takeTablet
        };
      }
    }
  };
});

如何在页面控制器中获取指令的控制器:

write a custom directive to get the reference to the directive controller from the DOM element: angular.module('myApp') .directive('controller', controller); controller.$inject = ['$parse']; function controller($parse) { var directive = { restrict: 'A', link: linkFunction }; return directive; function linkFunction(scope, el, attrs) { var directiveName = attrs.$normalize(el.prop("tagName").toLowerCase()); var directiveController = el.controller(directiveName); var model = $parse(attrs.controller); model.assign(scope, directiveController); } } use it in the page controller's html: <my-directive controller="vm.myDirectiveController"></my-directive> Use the directive controller in the page controller: vm.myDirectiveController.callSomeMethod();

注意:给出的解决方案只适用于元素指令的控制器(标签名用于获取所需指令的名称)。

下面的解决方案将是有用的,当你有'控制器As'格式的控制器(父控制器和指令(隔离))

有人可能会觉得这很有用,

指令:

var directive = {
        link: link,
        restrict: 'E',
        replace: true,
        scope: {
            clearFilters: '='
        },
        templateUrl: "/temp.html",
        bindToController: true, 
        controller: ProjectCustomAttributesController,
        controllerAs: 'vmd'
    };
    return directive;

    function link(scope, element, attrs) {
        scope.vmd.clearFilters = scope.vmd.SetFitlersToDefaultValue;
    }
}

控制器:

function DirectiveController($location, dbConnection, uiUtility) {
  vmd.SetFitlersToDefaultValue = SetFitlersToDefaultValue;

function SetFitlersToDefaultValue() {
           //your logic
        }
}

HTML代码:

      <Test-directive clear-filters="vm.ClearFilters"></Test-directive>
    <a class="pull-right" style="cursor: pointer" ng-click="vm.ClearFilters()"><u>Clear</u></a> 
//this button is from parent controller which will call directive controller function

测试 希望这能帮助到一些人。

我的简单方法(将标记视为原始代码)

<html>
<div ng-click="myfuncion"> 
<my-dir callfunction="myfunction">
</html>

<directive "my-dir">
callfunction:"=callfunction"
link : function(scope,element,attr) {
scope.callfunction = function() {
 /// your code
}
}
</directive>

也许这不是最好的选择,但你可以使用angular.element("#element"). isolatescope()或$("#element"). isolatescope()来访问指令的作用域和/或控制器。