AngularJS ngTable分页不起作用，在一页上显示所有数据

Question

我正在使用 ngTables 以表格格式加载我的数据并显示分页。我的数据是从 Firebase 数据库加载的，目前长度为 9。所以我想每页显示三行。

下面是我的代码，当我的页面加载时，所有九行都加载在第一页上，而我将计数设置为 3，并且当我点击页面时，它不会继续。

这还有一个问题，过滤也不起作用。

这是我在 HTML 视图中的 ng-table 并没有改变：

<div ng-controller="mycontroller">
    <strong>Filter:</strong> {{tableParams.filter()|json}}
        <table ng-table="tableParams" show-filter="true" class="table table-striped">
            <tr ng-repeat="obj in mylist">
                <td data-title="'Department'" filter="{ 'name': 'text' }">{{ obj.department }}</td>
                <td data-title="'Lastname'" >{{ obj.lastname }}</td>
                <td data-title="'City'">{{ obj.city }}</td>
            </tr>
        </table>
</div>

和mycontroller.js：

app.controller('mycontroller', ["$scope", "$filter", "ngTableParams", "DatabaseRef", "$firebaseArray",
    function ($scope, $filter, ngTableParams, DatabaseRef, $firebaseArray) {

        //get all data from firebase database
        var mydb = DatabaseRef.ref("projects").orderByKey();
        $scope.mylist = $firebaseArray(mydb);

        var data = $scope.mylist;
        data.$loaded().then(function(data) {
            console.log(data.length); // data is loaded here, and the length is 9
            $scope.tableParams = new ngTableParams({
                page: 1, // show first page
                count: 3, // count per page
                filter: {
                    name: '' // initial filter
                }
            }, {
                total: data.length, // length of data
                getData: function ($defer, params) {
                    // use build-in angular filter
                    var orderedData = params.filter() ? $filter('filter')(data, params.filter()) : data;
                    $scope.users = orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count());
                    params.total(orderedData.length);
                    // set total for recalc pagination
                    $defer.resolve($scope.users);
                }
            });
        });
    }]);

Answer 1

这是可行的解决方案：

app.controller('mycontroller', ["$scope", "$filter", "ngTableParams", "DatabaseRef", "$firebaseArray",
    function ($scope, $filter, ngTableParams, DatabaseRef, $firebaseArray) {

        //get all data from firebase database
        var mydb = DatabaseRef.ref("projects").orderByKey();
        $scope.mylist = $firebaseArray(mydb);

        var data = $scope.mylist;
        data.$loaded().then(function(data) {
            console.log(data.length); // data is loaded here, and the length is 9
            $scope.tableParams = new ngTableParams({
                page: 1, // show first page
                count: 3, // count per page
                filter: {
                    name: '' // initial filter
                },
                sorting: { city: "asc" }
            }, {
            filterSwitch: true,
            total: 0, //data.length, // length of data
            getData: function ($defer, params) {
                // use build-in angular filter
                var filteredData = params.filter() ?
                    $filter('filter')(data, params.filter()) :
                    $scope.mylist;

                var orderedData = params.sorting() ?
                    $filter('orderBy')(filteredData, params.orderBy()) : filteredData;

                params.total($scope.mylist.length);
                // set total for recalc pagination
                $defer.resolve(orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count()));


                }
            });
        });
    }]);

Answer 2

• page 参数是额外的，因为默认值无论如何都是 1。
• filter 是额外的，因为默认情况下它是空的。
• total 是额外的，因为默认情况下它会自动获取数据集的长度
• getData 是额外的。您不需要自定义过滤。 ngTable 进行过滤

我建议替换此代码

console.log(data.length); // data is loaded here, and the length is 9
$scope.tableParams = new ngTableParams({
    page: 1, // show first page
    count: 3, // count per page
    filter: {
        name: '' // initial filter
    }
}, {
    total: data.length, // length of data
    getData: function ($defer, params) {
        // use build-in angular filter
        var orderedData = params.filter() ? $filter('filter')(data, params.filter()) : data;
        $scope.users = orderedData.slice((params.page() - 1) * params.count(), params.page() * params.count());
        params.total(orderedData.length);
        // set total for recalc pagination
        $defer.resolve($scope.users);
    }
});

进入这个。

console.log(data.length); // data is loaded here, and the length is 9
$scope.tableParams = new ngTableParams({
    count: 3, // count per page
}, {
    dataset: data
});

并在 HTML 中将此 ng-repeat="obj in mylist" 更改为此 ng-repeat="obj in $data"

Answer 3

这里有一个简单的例子，说明如何使用ngTable 添加分页。

显然，请确保添加对 angularjs 的引用。

<script src="//cdnjs.cloudflare.com/ajax/libs/angular.js/1.4.2/angular.js"></script>

添加对 ngTable javascript 和 css 的引用。

<link rel="stylesheet"; href="https://unpkg.com/ng-table@2.0.2/bundles/ng-table.min.css">
<script src="https://unpkg.com/ng-table@2.0.2/bundles/ng-table.min.js"></script>

创建ngApp 后，在视图中创建表。

更新：

<strong>Filter:</strong> {{tableParams.filter()|json}}
<table ng-table="tableParams" show-filter="true" class="table table-striped">
    <tr ng-repeat="obj in myList">
        <td data-title="'Department'" filter="{ department: 'text' }" sortable="'department'">{{ obj.department }}</td>
        <td data-title="'Lastname'" >{{ obj.lastname }}</td>
        <td data-title="'City'">{{ obj.city }}</td>
    </tr>
</table>

在您的控制器上，从data.$loaded() 中删除$scope.tableParams 并直接使用$scope.myList。

app.controller('mycontroller', ["$scope", "$filter", "ngTableParams", "DatabaseRef", "$firebaseArray",
function ($scope, $filter, ngTableParams, DatabaseRef, $firebaseArray) {

    //get all data from firebase database
    var mydb = DatabaseRef.ref("projects").orderByKey();
    $scope.mylist = $firebaseArray(mydb);

    $scope.mylist.$loaded().then(function(data) {
        console.log(data.length); // data is loaded here, and the length is 9
        $scope.arrayLength = data.length;
    });

    $scope.tableParams = new ngTableParams({
            page: 1, // show first page
            count: 3, // count per page
            filter: {
                department: '' // initial filter
            }
        }, {
            total: $scope.arrayLength, // length of data
            getData: function ($defer, params) {
                // use build-in angular filter
                $scope.mylist = $defer.resolve(params.filter() ? $filter('filter')($scope.mylist, params.filter()) : $scope.mylist);
                $scope.users = $scope.mylist.slice((params.page() - 1) * params.count(), params.page() * params.count());
                // set total for recalc pagination
                params.total($scope.mylist.length);                    
            }
    });
}]);