我无法更新laravel 5中的字段

Question

我的laravel代码中的Get，Post，Delete是可以的。但我无法更新该领域。

BookController.php中的函数更新

$ data = $ this-> request-> all（）;

如果显示dd（$ data），则为null。

什么理由？请帮帮我。

BookRequest.php代码：

<?php
namespace App\Http\Requests;
use Illuminate\Foundation\Http\FormRequest;
class BookRequest extends FormRequest
{
    public function authorize()
    {
        return true;
    }
    public function rules()
    {
        return [
            'name' => 'required|max:255',
            'coment' => 'required'
        ];
    }
}

BookController.php代码：

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Book;
use Illuminate\Http\Response;
use App\Http\Requests\BookRequest;
class BookController extends Controller
{
protected $request;
protected $book;
public function __construct(Request $request, Book $book) {
    $this->request = $request;
    $this->book = $book;
}
public function update(BookRequest $request, $id) {
    $data = $this->request->all();
    $book = $this->book->find($id);
    $book->name = $data['name'];
    $book->coment = $data['coment'];
    $book->save();
    return response()->json(['status' => Response::HTTP_OK]);
}
}

Answer 1

如果我是你，我将替换控制器，如下所示：

<?php
namespace App\Http\Controllers;


use App\Book;
use Illuminate\Http\Response;
use App\Http\Requests\BookRequest;

class BookController extends Controller
{
    public function update(BookRequest $request, $id) {

        $book = Book::find($id);
        $book->update($request->all());
        return response()->json(['status' => Response::HTTP_OK]);
     }
}

如果您已设置Route：model binding，那么您可以更好地简化Code​​。下面的代码仅适用于路径文件web.php中的Route :: model设置。

查看此文档以获取更多详细信息：

https://laravel.com/docs/5.6/routing#route-model-binding

public function update(BookRequest $request, Book $book) {
    $book->update($request->all());
    return response()->json(['status' => Response::HTTP_OK]);
 }

Answer 2

试试这个：-

$request->all();

代替

$this->request->all()

Answer 3

我已经解决了。

我的要求：http://127.0.0.1:8000/api/book POST，key：_method：PUT

更新代码

$data = $request->all();
$book = Boook::find($id);
$book->name = $data['name'];
$book->coment = $data['coment'];
$book->save();

问候。