javascript - 在 AngularJS 中通过 AJAX 加载数据后如何重新初始化数据表？

Question

我将 AngularJS 和 Datatables 与服务器端脚本一起使用，以通过 AJAX 获取数据。

我的 Controller 看起来像:

var currentJobId = $stateParams.jobId;
var selectedJobId = $rootScope.currentJob;

if (currentJobId !== selectedJobId) {
    $rootScope.currentJob=$stateParams.jobId;
    var data = {
        id: $stateParams.jobId
    }
    $http.post('http://localhost/angular/scripts/getJob.php', data).success(function (thedata) {
        $scope.job = thedata.information;
        $scope.jobNotes = thedata.notes;
        $scope.jobMaterialUsage = thedata.materialUsage;
        $scope.jobItems = thedata.jobItems;
        $scope.jobSubcontractorCosts = thedata.subcontractorCosts;
        $scope.jobBondMiscCosts = thedata.bondMiscCosts;
        $scope.jobEmployeeTime = thedata.employeeTime;
    });
}

示例表如下所示:

<table class="table table-striped table-hover row-links" id="employeeTimeTable" ui-jq="dataTable" ui-options="tableOptions">
    <thead>
        <tr>
            <th>Employee Name</th>
            <th>Total Hours</th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat="time in jobEmployeeTime" ng-click="goToEmployee(job.id,time.id);">
            <td>{{time.name}}</td>
            <td>{{time.total_minutes}}</td>
        </tr>
    </tbody>
    <tfoot>
        <tr>
            <th>Employee Name</th>
            <th>Total Hours</th>
        </tr>
    </tfoot>
</table>

所以它基本上是在查看作业 ID 是否已更改，如果已更改，它会调用 ajax 来获取新的作业信息 - 如果没有更改，则什么都不做。我遇到的问题是，当我点击刷新时，在加载数据之前，我的表正在使用数据表进行初始化。离开页面并返回到它会正确初始化数据表，但是当通过 URL 直接进入页面或刷新时，它只是将数据放在表的顶部，同时仍然保持“表中没有可用数据”并且没有数据表功能正常工作。

Answer 1

与 Angular ui-router您可以在调用状态 Controller 之前解析您的后端数据。

请查看下面或此 jsFiddle 中的演示.

它没有数据表，但这可能是更容易添加的部分。

(function() {
'use strict';

angular.module('demoApp', ['ui.router', 'angularSpinner'])
    .run(StartUp)
    .factory('jobsDataService', JobsDataFactory)
    .config(Config);

function JobsDataFactory($http) {
    var backendUrl = 'http://jsonplaceholder.typicode.com';
    
    return {
        get: function(id) {
            return $http.jsonp(backendUrl + '/posts/'+id +'?callback=JSON_CALLBACK')
                .then(function(response) {
                    return response.data;
            });
        }
    };
}

function Config($urlRouterProvider, $stateProvider) {
    $urlRouterProvider.otherwise('/jobs/1');
    
    $stateProvider
        .state('jobs',
               {
                   url: '/jobs/:id',
                   templateUrl: 'partials/post.html',
                   resolve: {
                       job: function(jobsDataService, $stateParams) {
                           console.log($stateParams.id);
                           return jobsDataService.get($stateParams.id);
                       }
                   },
                   controller: function($scope, job) {
                       console.log(job);
                       $scope.job = job;
                   }
               });
}

function StartUp($rootScope){
    // only used for loading spinner
    $rootScope
        .$on('$stateChangeStart', 
            function(event, toState, toParams, fromState, fromParams){ 
                $rootScope.loading = true;
        });

    $rootScope
        .$on('$stateChangeSuccess',
            function(event, toState, toParams, fromState, fromParams){ 
                $rootScope.loading = false;
        });

}
    
})();

<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.3/angular.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/spin.js/2.3.1/spin.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-spinner/0.6.2/angular-spinner.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular-ui-router/0.2.15/angular-ui-router.js"></script>

<div ng-app="demoApp">
    <span us-spinner="" ng-if="loading"></span>
    <a href="#" ui-sref='jobs({id: 1})'>job 1</a>
    <a href="#" ui-sref='jobs({id: 2})'>job 2</a>
    <a href="#" ui-sref='jobs({id: 3})'>job 3</a>
    <div ui-view=""></div>
    
    <script type="text/ng-template" id="partials/post.html">
        <p>debug id = {{job.id}}</p>
        <h1>{{job.title}}</h1>
        <p>{{job.body}}</p>
    </script>
</div>