Javascript ng包含和ng重复-删除子项
我可能只是想尝试一下,但是我在下面的代码中遇到了问题。我有嵌套的ng repeats和ng includes,希望从任意嵌套级别删除一个项。所以Javascript ng包含和ng重复-删除子项,javascript,angularjs,Javascript,Angularjs,我可能只是想尝试一下,但是我在下面的代码中遇到了问题。我有嵌套的ng repeats和ng includes,希望从任意嵌套级别删除一个项。所以 <div ng-repeat="item in List" ng-include="'item.html'"> </div> item.html <div> <h1>{{ item.title }}</h1> <div ng-repeat="item in item.L
<div ng-repeat="item in List" ng-include="'item.html'">
</div>
item.html
<div>
<h1>{{ item.title }}</h1>
<div ng-repeat="item in item.List" ng-include="'item.html'"></div>
<button ng-click="removeItem(item)">Remove me!</button>
</div>
{{item.title}
把我带走!
显然,如果我可以访问父对象的列表
数组,我可以根据索引将其拼接出来,但是我对如何访问父对象有着严重的困惑。知道如何将父项和项一起传递到ng include中吗
你知道我如何将父项与项目一起传递到ng include中吗
我认为将父代传递给子代将导致代码复杂性和难以维护。我还保证,当我们谈论大数据时,它会影响性能。您不使用带有隔离作用域的嵌套指令,因此我将使用其他方法根据唯一值a从嵌套树中删除节点。例如:
function removeFromTree(parent, childNameToRemove){
console.log(parent);
parent.nodes = parent.nodes.filter(function(child){
return child.name !== childNameToRemove;
}).map(function(child){
return removeFromTree(child, childNameToRemove);
});
return parent;
}
$scope.removeItem = function(item){
$scope.displayTree[0] = removeFromTree( $scope.displayTree[0], item.name);
}
完整代码
HTML
你们能用plunker/fiddle提供演示来演示你们的问题吗?你们能把你们的场景再充实一点吗?使用ng include
来创建这样的递归是非常少见的,而且通常令人困惑$parent
可能会做你想做的事,但可能会弄得一团糟;$parent.$parent.$parent
的代码很快就会变得非常难看。没有更多的东西可以充实了。一个项目需要能够从其父项的列表中删除自己,这样它就不需要超过一个级别。我尝试了$parent
,但它不公开列表数组,只公开父控制器。有什么更好的方法可以像这样进行递归呢?我考虑过这种方法,但是使用guid而不是name字段。感觉这是最干净的方法,但我不想在其中添加额外的数据。@opticon您可以使用唯一id,它将为您提供灵活性和轻松的代码维护。否则,将父对象传递给子对象就太过分了
<div ng-controller="DialogDemoCtrl">
<div class="span5 article-tree">
<div ng-style="{'overflow': 'auto'}">
<script type="text/ng-template" id="tree_item_renderer">
<span>
{{showNode(data)}}
</span>
<button ng-click="removeItem(data)">Remove me!</button>
<li ng-repeat="data in data.nodes" class="parent_li" ng-include="'tree_item_renderer'" tree-node></li>
</ul>
</script>
<div class="tree well">
<ul>
<li ng-repeat="data in displayTree" ng-include="'tree_item_renderer'"></li>
</ul>
</div>
</div>
</div>
</div>
angular.module('plunker', ['ui.bootstrap'])
.controller('DialogDemoCtrl', function ($scope, $http) {
buildEmptyTree();
function removeFromTree(parent, childNameToRemove){
console.log(parent);
parent.nodes = parent.nodes.filter(function(child){
return child.name !== childNameToRemove;
}).map(function(child){
return removeFromTree(child, childNameToRemove);
});
return parent;
}
$scope.removeItem = function(item){
$scope.displayTree[0] = removeFromTree( $scope.displayTree[0], item.name);
}
function buildEmptyTree() {
$scope.displayTree =
[{
"name": "Root",
"type_name": "Node",
"show": true,
"nodes": [{
"name": "Loose",
"group_name": "Node-1",
"show": true,
"nodes": [{
"name": "Node-1-1",
"device_name": "Node-1-1",
"show": true,
"nodes": []
}, {
"name": "Node-1-2",
"device_name": "Node-1-2",
"show": true,
"nodes": []
}, {
"name": "Node-1-3",
"device_name": "Node-1-3",
"show": true,
"nodes": []
}]
}, {
"name": "God",
"group_name": "Node-2",
"show": true,
"nodes": [{
"name": "Vadar",
"device_name": "Node-2-1",
"show": true,
"nodes": []
}]
}, {
"name": "Borg",
"group_name": "Node-3",
"show": true,
"nodes": []
}, {
"name": "Fess",
"group_name": "Node-4",
"show": true,
"nodes": []
}]
}];
[{
"name": "Android",
"type_name": "Android",
"icon": "icon-android icon-3",
"show": true,
"nodes": []
}];
}
});