Question

我是Angular JS的新手并且正在学习它。我有一个div并在启动时使用控制器从json加载数据，但是我想在执行特定操作后更改json对象时重新加载它。

的index.html

!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html ng-app="ezpf" xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <script src="lib/angular.js"></script>
        <script src="lib/jquery.min.js"></script>
    </head>
    <body onload="EZPF.Application.initialize()">
        <div id="btn-import" class="my-button button-small" onClick="EZPF.Application.openFile(this)">
                    <span class="button-title">Import</span>
                    <span class="button-help">This button will do something                         else.</span>                        
        </div>
        <div class="page" id="pro" ng-controller="ProductsListCtrl as store">
             <div ng-repeat="product in store.products.Products">                     
                  {{product.Title}}
             </div>
        </div>
    </body>
</html>

myAngular.js

(function()
{
    var app = angular.module('ezpf', []);
    app.controller('ProductsListCtrl',['$scope', function($scope)
    {
        this.products = EZPF.Application.getProducts();     
        $scope.reload = function()        
        {           
            $scope.products = EZPF.Application.getProducts();           
        };
    }]);
})();

在以下javascript文件中，我打开JSON文件并使用新数据重新加载产品对象。使用新的JSON文件内容更新后，我必须重新加载数据。我试图从控制器调用重新加载，但它无法正常工作。请帮助我，提前谢谢。

的application.js

var EZPF;
if (!EZPF) 
    EZPF = {};
if (!EZPF.Application) 
    EZPF.Application = {};


EZPF.Application = 
{    
    products: [],
    getProducts: function()
    {
        if (this.products.length == 0) 
        {
            this.products = 
            {
                "Products": [
                {
                     "Title": "default name"
                     ....
                }]
            }
        }
        return this.products;
    },
    openFile: function()
    {
        var docsDir = air.File.documentsDirectory;
        try 
        {
            var jsonFilter = new air.FileFilter("JSON Files", "*.json");
            docsDir.browseForOpenMultiple("Select JSON Files", [jsonFilter]);
            docsDir.addEventListener(air.FileListEvent.SELECT_MULTIPLE, filesSelected);
        } 
        catch (error) 
        {
            air.trace("Failed:", error.message)
        }

        function filesSelected(event)
        {
            air.trace(event.files[0].nativePath);
            var myFile = new window.runtime.flash.filesystem.File();
            var file = myFile.resolvePath(event.files[0].nativePath);
            var fileStream = new air.FileStream();
            fileStream.open(file, air.FileMode.READ);
            this.products = fileStream.readMultiByte(fileStream.bytesAvailable, air.File.systemCharset);
            fileStream.close();
            air.trace(products);
            $('#pro').reload();
        }
    }
};

Answer 1

您使用的是controller as（ng-controller="ProductsListCtrl as store"）语法，因此您必须将变量分配给控制器本身（this）而不是$scope：

var vm = this;

vm.products = EZPF.Application.getProducts();     
vm.reload = function()        
{           
    vm.products = EZPF.Application.getProducts();           
};

重新加载数据：

<div class="page" id="pro" ng-controller="ProductsListCtrl as store">
    <div ng-repeat="product in store.products.Products">                     
        {{product.Title}}
    </div>
    <!-- Button for reloading the data -->
    <button ng-click="store.reload()">Reload Data</button>
</div>

JSFIDDLE

AngularJS：使用控制器和ng-repeat重新加载div上的数据

1 个答案: