Javascript Laravel5.2和ajax加载资源失败：服务器响应状态为500

您好，我正在尝试使用laravel和ajax创建待办事项列表应用程序。问题是，如果我尝试添加、编辑和删除一项任务，我得到的加载资源失败：服务器响应状态为500 但当我点击带有错误的链接时，返回的数据以json格式显示

视图：

问题在于

Route::post('/tasks',function(Request $request){
    $task = Task::create($request::all());

    return Response::json($task);
});

Route::put('/tasks/{task_id?}',function(Request $request,$task_id){
    $task = Task::find($task_id);

---

因此，我通过添加

\illumb\Http\Request

作为$Request的类型来解决这个问题

您没有为此url注册任何路由'/ajax crud/public/tasks'，声明它。那么500的错误将发生在第二条路线的柱子上：……没有兄弟。你不能那样申报。您需要将ajax中给定的url作为路由参数传递。例如route:：post（/ajax crud/public/tasks）和。指向控制器及其函数，当我添加/ajax crud/public/tom my routes i get Methode时，您将在其中对ajax数据进行处理。不允许

$(document).ready(function(){

    var url = "/ajax-crud/public/tasks";

    //display modal form for task editing
    $('.open-modal').click(function(){
        var task_id = $(this).val();

        $.get(url + '/' + task_id, function (data) {
            //success data
            console.log(data);
            $('#task_id').val(data.id);
            $('#task').val(data.task);
            $('#description').val(data.description);
            $('#btn-save').val("update");

            $('#myModal').modal('show');
        }) 
    });

    //display modal form for creating new task
    $('#btn-add').click(function(){
        $('#btn-save').val("add");
        $('#frmTasks').trigger("reset");
        $('#myModal').modal('show');
    });

    //delete task and remove it from list
    $('.delete-task').click(function(){
        var task_id = $(this).val();

        $.ajax({

            type: "DELETE",
            url: url + '/' + task_id,
            success: function (data) {
                console.log(data);

                $("#task" + task_id).remove();
            },
            error: function (data) {
                console.log('Error:', data);
            }
        });
    });

    //create new task / update existing task
    $("#btn-save").click(function (e) {
        $.ajaxSetup({
            headers: {
                'X-CSRF-TOKEN': $('meta[name="_token"]').attr('content')
            }
        })

        e.preventDefault(); 

        var formData = {
            task: $('#task').val(),
            description: $('#description').val(),
        }

        //used to determine the http verb to use [add=POST], [update=PUT]
        var state = $('#btn-save').val();

        var type = "POST"; //for creating new resource
        var task_id = $('#task_id').val();;
        var my_url = url;

        if (state == "update"){
            type = "PUT"; //for updating existing resource
            my_url += '/' + task_id;
        }

        console.log(formData);

        $.ajax({

            type: type,
            url: my_url,
            data: formData,
            dataType: 'json',
            success: function (data) {
                console.log(data);

                var task = '<tr id="task' + data.id + '"><td>' + data.id + '</td><td>' + data.task + '</td><td>' + data.description + '</td><td>' + data.created_at + '</td>';
                task += '<td><button class="btn btn-warning btn-xs btn-detail open-modal" value="' + data.id + '">Edit</button>';
                task += '<button class="btn btn-danger btn-xs btn-delete delete-task" value="' + data.id + '">Delete</button></td></tr>';

                if (state == "add"){ //if user added a new record
                    $('#tasks-list').append(task);
                }else{ //if user updated an existing record

                    $("#task" + task_id).replaceWith( task );
                }

                $('#frmTasks').trigger("reset");

                $('#myModal').modal('hide')
            },
            error: function (data) {
                console.log('Error:', data);
            }
        });
    });
});

Route::get('/tasks/{task_id?}',function($task_id){
    $task = Task::find($task_id);

    return Response::json($task);
});

Route::post('/tasks',function(Request $request){
    $task = Task::create($request->all());

    return Response::json($task);
});

Route::put('/tasks/{task_id?}',function(Request $request,$task_id){
    $task = Task::find($task_id);

    $task->task = $request->task;
    $task->description = $request->description;

    $task->save();

    return Response::json($task);
});

Route::delete('/tasks/{task_id?}',function($task_id){
    $task = Task::destroy($task_id);

    return Response::json($task);
});

Route::get('/', function () {
    $tasks = Task::all();

    return View::make('welcome')->with('tasks',$tasks);
});

Route::post('/tasks',function(Request $request){
    $task = Task::create($request::all());

    return Response::json($task);
});

Route::put('/tasks/{task_id?}',function(Request $request,$task_id){
    $task = Task::find($task_id);