我有一个父指令,我想在链接函数中动态添加子指令.子指令^需要parentDirective.
我可以添加任何html元素,但一旦我尝试$编译我的孩子指令,我得到以下错误,它找不到所需的控制器.如果我手动添加子指令,它完美地工作.
我可以添加任何html元素,但一旦我尝试$编译我的孩子指令,我得到以下错误,它找不到所需的控制器.如果我手动添加子指令,它完美地工作.
错误:
Error: [$compile:ctreq] Controller 'myInput',required by directive 'myKey',can't be found!
添加元素后,我的模板应该是这样的:
<myInput> <myKey></myKey> <-- added dynamically <myKey></myKey> <-- added dynamically <myKey></myKey> <-- added dynamically .... </myInput>
myInput指令:
angular.module('myModule').directive('myInput',['$log','$templateCache','$compile',function($log,$templateCache,$compile) { return { restrict: 'E',transclude: true,scope: { service: '=',// expects a stimulus object provided by the tatoolStimulusService onkeydown: '&' // method called on key press },controller: ['$scope',function($scope) { this.addKey = function(keyCode,value) { $scope.service.addInputKey(keyCode,{ givenResponse: value }); }; }],link: function (scope,element,attr) { // add keys directives angular.forEach(scope.service.registeredKeyInputs,function(value,key) { var keyEl = angular.element( $compile('<myKey code="'+ key +'" response="'+ value.response +'"></myKey >')($rootScope)); element.children(":first").append(keyEl); }); },template: '<div ng-transclude></div>' }; }]);
myKey指令:
angular.module('myModule').directive('myKey','$sce',$sce) { return { restrict: 'E',scope: {},require: '^myInput',attr,myCtrl) { myCtrl.addKey(attr.code,attr.response); // ... },template: '<div class="key"><span ng-bind-html="key"></span></div>' }; }]);
将compile-append操作的顺序更改为append-compile:
var keyEl = angular.element('<myKey code="'+ key +'" response="'+ value.response +'"></myKey>'); element.append(keyEl); $compile(keyEl)(scope);
显然,在这种情况下(定位父元素指令)很重要,正在编译的新元素已经在DOM中.
除非DOM元素附加到DOM,否则它不具有父(其parentNode属性为null).当Angular查找^ myInput时,它会遍历DOM树,直到找到具有必需指令的节点.如果元素不在DOM中,则此搜索将立即失败,因为元素没有单个parentNode.因此你得到的错误.
另外我建议将您的指令的名称从camelCase更改为snake-case:
<my-input> <my-key></my-key> </my-input>
那么编译部分也会改变:
angular.element('<my-key code="'+ key +'" response="'+ value.response +'"></my-key >');