DataTables:自定义响应处理

Question

我开始工作AngularJS和DataTables,不知是否可以定制响应DataTables期待.DataTables插件的当前预期是这样的:

{
    "draw": 1,
    "recordsTotal": 57,
    "recordsFiltered": 5,
    "data": [...]
}

在服务器端,API正在处理 django-tastypie

服务器的响应是:

{
     meta: {
        limit: 20,
        next: null,
        offset: 0,
        previous: null,
        total_count: 2
     },

     objects: [...]
 }

那么,有没有办法调整Datatables插件来接受/映射这个响应,或者我必须找到一种方法来向api添加预期的字段？

到目前为止我已经这样做了:

    var deptTable = angular.element('#deptManagementTable').DataTable({
        processing: true,
        serverSide: true,
        pagingType: "simple_numbers",
        ajax: {
            url: "/client/api/v1/departments/",
            data: function(d) {
                d.limit = d.length;
                d.offset = d.start;
                d.dept_name__icontains = d.search.value;
            },
            dataSrc: function(json) {
                for (var i=0, len=json.objects.length ; i<len ; i++) {
                    json.objects[i].DT_RowId = json.objects[i].dept_id;
                }
                return json.objects;
            }
        },
        aLengthMenu: [
            [5, 25, 50, 100],
            [5, 25, 50, 100]
        ],
        iDisplayLength: 5,
        columns: [
            {
                data: "dept_name"
            },
            {
                data: "dept_created_on",
                render: function ( data, type, full, meta ) {
                    var dateCreated = new Date(data);
                    dateCreated = dateCreated.toLocaleDateString();
                    return dateCreated;
                }
            }
        ]
    });

任何帮助将不胜感激.

提前致谢 :)

Answer 1

您可以将函数传递给DataTables ajax选项,这将使您可以完全控制如何在将数据传递给DataTables之前获取和映射数据.

.DataTable({
    serverSide: true,
    ajax: function(data, callback, settings) {
        // make a regular ajax request using data.start and data.length
        $.get('/client/api/v1/departments/', {
            limit: data.length,
            offset: data.start,
            dept_name__icontains: data.search.value
        }, function(res) {
            // map your server's response to the DataTables format and pass it to
            // DataTables' callback
            callback({
                recordsTotal: res.meta.total_count,
                recordsFiltered: res.meta.total_count,
                data: res.objects
            });
        });
    }
});

上面的解决方案已经使用jQuery DataTables 1.10.4 进行了测试.

由于这个问题用Angular标记,这里是使用角度数据表的解决方案.

<div ng-controller="testCtrl">
    <table datatable dt-options="dtOptions" dt-columns="dtColumns" class="row-border hover"></table>
</div>

.controller('testCtrl', function($scope, $http, DTOptionsBuilder, DTColumnBuilder) {
    $scope.dtOptions = DTOptionsBuilder.newOptions()
        .withOption('serverSide', true)
        .withOption('ajax', function(data, callback, settings) {
            // make an ajax request using data.start and data.length
            $http.get('/client/api/v1/departments/', {
                limit: data.length,
                offset: data.start,
                dept_name__icontains: data.search.value
            }).success(function(res) {
                // map your server's response to the DataTables format and pass it to
                // DataTables' callback
                callback({
                    recordsTotal: res.meta.total_count,
                    recordsFiltered: res.meta.total_count,
                    data: res.objects
                });
            });
        })
        .withDataProp('data'); // IMPORTANT¹

    $scope.dtColumns = [
        // your column definitions here
    ];
});

上述解决方案已使用角度数据表0.3.0 + DataTables 1.10.4进行了测试.

¹这里要注意的重要部分是angular-datatables解决方案需要.withDataProp('data')工作,而纯jQuery DataTables解决方案没有data: 'data'选项.