在 Ajax 调用 Laravel 控制器后显示 JSON 而不是 Datatable

Question

我对 ajax 和 json 还很陌生，非常感谢一些帮助。 我正在对 Laravel 控制器进行 Ajax 调用，以从名为“subjects”的数据库表中返回一些字段，并将它们显示在 Laravel 视图的 DataTable 中。问题是当我打开视图时，看到的是 JSON 而不是 Datatable。

以下是视图主题/索引中返回的内容：

{"draw":0,"recordsTotal":8,"recordsFiltered":8,"data":[{"id":"1","name":"Biology"},{"id":"3","name":"English Language"},{"id":"4","name":"Physics"},{"id":"5","name":"Chemistry"},{"id":"6","name":"Mathematics"},{"id":"7","name":"Mathematics"},{"id":"8","name":"English Language"},{"id":"9","name":"French"}],"queries":[{"query":"select count(*) as aggregate from (select '1' as `row_count` from `subjects`) count_row_table","bindings":[],"time":4.65},{"query":"select `id`, `name` from `subjects`","bindings":[],"time":0.41}],"input":[]}

这是视图 /subjects/index 中的 HTML

<table id="subjects_table" class="table table-bordered" style="width:100%">
    <thead>
            <tr>
                <th>Id</th>
                <th>Subject</th>
            </tr>
                </thead>
                <tbody>

                </tbody>
        </table>

这是 Laravel 控制器中的代码：

class SubjectsController extends Controller
{
    public function index()
    {
        $subjects = Subject::select('id', 'name');
        return Datatables::of($subjects)->make(true);
   }
}

下面是进行 Ajax 调用的代码：

$('#subjects_table').DataTable({
      "processing": true,
      "serverSide": true,
      "ajax": "{{route('subjects.index')}}",
      "columns":[
          {"data": "id"},
          {"data": "name"}
      ]
});

这是 web.php 中的路由定义：

Route::get('subjects/', 'SubjectsController@index')->name('subjects.index');

如果您能提供任何帮助，我们将不胜感激

Answer 1

你应该试试这个：

路线

Route::get('subjects', 'SubjectsController@index')->name('subjects.index');
Route::get('getsubjects', 'SubjectsController@getSubjects')->name('subjects.get');

SubjectsController

class SubjectsController extends Controller
{
    public function index()
    {
        return view('subjects.index');
        $subjects = Subject::select('id', 'name');
        return Datatables::of($subjects)->make(true);
   }

   public function getSubjects()
    {

        return \DataTables::of(Subject::query())->make(true);

   }
}

查看

    <table id="subjects_table" class="table table-bordered" style="width:100%">
    <thead>
            <tr>
                <th>Id</th>
                <th>Subject</th>
            </tr>
                </thead>
                <tbody>

                </tbody>
        </table>

<script src="https://cdn.datatables.net/1.10.12/js/jquery.dataTables.min.js"></script>
    <script type="text/javascript">
    $(document).ready(function() {
        $('#subjects_table').DataTable({
            processing: true,
            serverSide: true,
            ajax: '{{ route('subjects.get') }}',
            columns: [
                {data: 'id', name: 'id'},
                {data: 'name', name: 'name'},
                {data: 'email', name: 'email'},
            ]
        });
    });
    </script>