Question

在AngularJS中，我正在尝试从JSON数据制作和编辑TreeView。我想从JSON获取nodevalue并使用表单进行编辑。编辑时，原始JSON应立即更改。我为此创建了plunkr，但没有得到一个想法，如何实现这一目标。

var app = angular.module('plunker', []);

app.directive('collection', function () {       
    return {
        restrict: "E",
        //replace: true,
        scope: {collection: '='},
        //controller: 'TreeController',
        //bindToController: true,       
        template: "<ul><member ng-repeat='member in collection' member='member'></member></ul>"         
    }
})

app.directive('member', function ($compile) {
    var linkerfunc = function(scope, element, attrs) {  
                    var collectionSt = '<collection collection="member.children"></collection>';
                    $compile(collectionSt)(scope, function(cloned, scope)   {                                           
                        element.append(cloned); 
                     });
                     scope.ShowDetailsFunc = function() {   
                       console.log('in function scope showdetails')
                        scope.ShowDetailsCtrlFunc(element,event);                     
                    } 
    }
    return {
        restrict: "E",
        //replace: true,
        scope: {member: '=', ShowDetailsCtrlFunc : '&'},
        template: "<li><span ng-click=ShowDetailsCtrlFunc($event)>{{member.NodeName}}</span></li>",     
        controller: 'MainCtrl',
        //controllerAs: 'MainCtrl',
        //bindToController: true,
        link: linkerfunc        
    }
})

app.controller('MainCtrl', function ($scope,$timeout) {     

    $scope.Intialfunc = function() { 
        $scope.testdata = []
        var myjsondata = JSON.parse('{ "NodeName": "Parent", "NodePath": "1", "children": [ { "NodeName": "mychild", "NodePath": "1.1", "children": [ { "NodeName": "chld1", "NodePath": "1.1.1", "children": [] } ] } ] }');
        $scope.testdata.push(myjsondata);
            //console.log($scope.testdata) //This one is showing
            $scope.changename = $scope.testdata[0].children[0].children[0].NodeName;    

        }   

    $timeout(function(){ $scope.Intialfunc(); }, 1000)

    $scope.ShowDetailsCtrlFunc = function(event) {
            console.log("in function ShowDetailsCtrlFunc"); 

            //event.stopImmediatePropagation(); 
      };
});

我尝试了angular.copy但是需要$ scope变量中的JSON数据部分并按预期更新该变量。

但我的JSON数据将是一个巨大的，我不知道如何更新它而不使用变量。请帮忙。

Answer 1

您可以使用ng-change在输入更改时执行操作：

<input type="text" ng-model="changename" ng-change="inputChange()">

然后，只需在控制器中创建一个更新所需内容的函数：

$scope.inputChange = function() {
  // do stuff here
  $scope.testdata[0].children[0].children[0].NodeName = $scope.changename;
  // write object to JSON
  var JSONstring = $scope.testdata.toJSON();
}

我还建议您查看ng-model-options并更改去抖动设置，这样您就不会toJSON每次按键都会{。}}。

http://plnkr.co/edit/dPWsowm4Puwajgk6CfvA?p=preview

AngularJS使用表单编辑JSON数据

1 个答案: