使用 ng-repeat 时,删除列表项时不会删除嵌入的元素 [英] Transcluded element not being deleted on removal of list item when using ng-repeat

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问题描述

我有一个使用 ng-repeat 实例化的小部件.初始创建工作正常,但之后它停止更新.以下是 index.html 的摘录:

<x-node ng-repeat="节点中的节点"></x-node>

partials/node.html:

{{node.name}}

还有指令:

angular.module('directive', []).directive('node', function() {返回 {限制:'E',范围:真实,templateUrl: 'partials/node.html',替换:真的,编译:函数(tElement,tAttrs,transclude){返回 {帖子:功能(范围,iElement,iAttrs){scope.$on('$destroy', function(event) {console.log('销毁');});}};}};});

如果我像这样修改控制台中的节点列表:

var e = angular.element($0);var s = e.scope();s.nodes.splice(1,1);s.$apply()

... 然后 $destroy 回调运行,但呈现的元素不会改变.我的指令中是否遗漏了什么?

演示:Plunker

解决方案

看来这确实是一个 bug,在 AngularJS 1.2 系列中已修复.这是使用 1.2 的更新演示.

index.html:

<html ng-app="我的应用程序"><head lang="zh-cn"><meta charset="utf-8"><title>自定义Plunker</title><link rel="stylesheet" href="style.css"><script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.js"></script><script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js"></script><script src="app.js"></script><body ng-controller="AppController"><div id="ct"><x-node ng-repeat="节点中的节点"></x-node>

<button id="test">删除元素 [1]</button></html>

app.js:

var app = angular.module('my-app', [], function () {})app.controller('AppController', function ($scope) {$scope.nodes = [{名称:'一个'}, {名称:'二'}, {名称:'三'}];})app.directive('node', function() {返回 {限制:'E',范围:真实,templateUrl: 'node.html',替换:真的,编译:函数(tElement,tAttrs,transclude){返回 {帖子:功能(范围,iElement,iAttrs){scope.$on('$destroy', function(event) {console.log('销毁');});}};}};});$(函数(){$('#test').click(function(){var el = $('#ct').children().first();如果(el.length){var e = angular.element(el[0]);var s = e.scope();s.nodes.splice(1,1);s.$apply()}})});

node.html:

{{node.name}}

I have a widget that I'm instantiating using ng-repeat. Initial creation works fine, but after that it stops updating. Here's an excerpt from index.html:

<div>
  <x-node ng-repeat="node in nodes"></x-node>
</div>

partials/node.html:

<div>{{node.name}}</div>

And the directive:

angular.module('directive', []).directive('node', function() {
    return {
        restrict: 'E',
        scope: true,
        templateUrl: 'partials/node.html',
        replace: true,
        compile: function(tElement, tAttrs, transclude) {
            return {
                post: function(scope, iElement, iAttrs) {
                    scope.$on('$destroy', function(event) {
                        console.log('destroying');
                    });
                }
            };
        }
    };
});

If I modify the list of nodes in the console like this:

var e = angular.element($0);
var s = e.scope();
s.nodes.splice(1,1);
s.$apply()

... then the $destroy callback runs, but the rendered elements do not change. Is there something I'm missing from my directive?

Demo: Plunker

解决方案

It seems this was indeed a bug, which is fixed in the 1.2 series of AngularJS. Here's an updated demo that uses 1.2.

index.html:

<!DOCTYPE html>
<html ng-app="my-app">

  <head lang="en">
    <meta charset="utf-8">
    <title>Custom Plunker</title>

    <link rel="stylesheet" href="style.css">

    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.21/angular.min.js"></script>

    <script src="app.js"></script>
  </head>

  <body ng-controller="AppController">

    <div id="ct">
      <x-node ng-repeat="node in nodes"></x-node>
    </div>

    <button id="test">Remove element [1]</button>
  </body>

</html>

app.js:

var app = angular.module('my-app', [], function () {

})

app.controller('AppController', function ($scope) {

        $scope.nodes = [{
          name: 'one'
        }, {
          name: 'two'
        }, {
          name: 'three'
        }];


})

app.directive('node', function() {
    return {
        restrict: 'E',
        scope: true,
        templateUrl: 'node.html',
        replace: true,
        compile: function(tElement, tAttrs, transclude) {
            return {
                post: function(scope, iElement, iAttrs) {
                    scope.$on('$destroy', function(event) {
                        console.log('destroying');
                    });
                }
            };
        }
    };
});

$(function(){
  $('#test').click(function(){
    var el = $('#ct').children().first();
    if(el.length){
      var e = angular.element(el[0]);
      var s = e.scope();
      s.nodes.splice(1,1);
      s.$apply()
    }
  })  
});

node.html:

<div>{{node.name}}</div>

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