Question

我在将数据插入数据库时遇到问题。假设我有一个名为HeroController的控制器，我想创建一个新的hero对象，并将其作为新英雄插入到我的数据库中。

我的控制器包含以下方法：

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\User;

class UserController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
//        return response()->json([
//            'name' => 'Abigail',
//            'state' => 'CA'
//        ]);
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function validator(array $data)
    {
        return Validator::make($data, [
            'name' => 'required|max:255',
            'email' => 'required|email|max:255|unique:users',
            'password' => 'required|min:6',
        ]);
    }
    public function create(array $data)
    {

        $user = User::create([
            'name' => $data['name'],
            'email' => $data['email'],
            'password' => bcrypt($data[password]),
        ]);
    }
    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        $user = $request->isMethod('put');

        $user = new User;
        $user->name = $request->name;
        $user->email = $request->email;
        $user->password = $request->password;
        $user->save();

        return response()->json($usere, 201);
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
    }
}

我的routes.php文件：

<?php

/*
|--------------------------------------------------------------------------
| Web Routes
|--------------------------------------------------------------------------
|
| Here is where you can register web routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| contains the "web" middleware group. Now create something great!
|
*/

Route::get('/', function () {
    return view('welcome');
});


Route::get('/users/create', 'UserController@create');

这是我得到的错误。类型错误：函数App \ Http \ Controllers \ UserController :: attendance（）的参数太少，传递了0个且恰好期望有1个。”我是laravel的新手。

Answer 1

您正在使用get请求来调用create函数。

Route::get('/users/create', 'UserController@create');

因此，您没有将任何数据传递到该控制器。因此是错误。

Answer 2

首先，您需要更改create和validator的可见性：

protected function create(array $data)

验证器方法：

protected function validator(array $data)

然后，您需要将/users/create路由更改为post，并使用store方法：

Route::post('/users/create', 'UserController@store');

在您的UserController中，将您的store方法更新为：

public function store(Request $request)
{
    // validate the request
    $validator = $this->validator($request->all());

    if ($validator->fails()) {
        return response()
        ->json(422,$validator->errors()->messages());
    }

    $user = $this->create($request->all());

    return response()->json($user, 201);
}

如果您需要某种形式的表格来注册或创建用户，请在控制器中添加其他方法：

public function register()
{
    return view('user.register');
}

然后定义另一条get路线：

Route::get('/users/register', 'UserController@register');

Answer 3

 Route::delete('/file/{id}','FileController@destroy')->name('deletefile');

希望对您有所帮助

“类型错误：函数App \ Http \ Controllers \ UserController :: create（）的参数太少，传递了0个且恰好是1个”

3 个答案: