Question

如何使用Laravel 5.6检查用户是否存在于我的表中或重定向回一条消息？

类型错误：传递给Illuminate \ Auth \ SessionGuard :: login（）的参数1必须是Illuminate \ Contracts \ Auth \ Authenticatable的实例，给出的Illuminate \ Http \ RedirectResponse实例，在C：\ wamp \ www中调用\ zainsurgalt \ vendor \ laravel \ framework \ src \ Illuminate \ Foundation \ Auth \ RegistersUsers.php，第35行

protected function create(array $data)
{
    $isEmailExists = Niigem::where('email', $data['email'])->count();
    if($isEmailExists){
        User::create([
        'name'     => $data['name'],
        'email'    => $data['email'],
        'password' => bcrypt($data['password']),
        ]);
    }
    else{
        return Redirect::back()->withErrors(['msg', 'The Message']);
    }
}

我在这里添加了我的Create方法

<?php

namespace App\Http\Controllers\Auth;

use App\User;
use App\Niigem;
use Validator;
use Illuminate\Support\Facades\Redirect;
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\RegistersUsers;

class RegisterController extends Controller
{

use RegistersUsers;

protected $redirectTo = '/home';

public function __construct()
{
    $this->middleware('guest');
}

protected function validator(array $data)
{
    return Validator::make($data, [
        'name'     => 'required|max:255',
        'email'    => 'required|max:255|unique:users',
        'password' => 'required|min:6|confirmed',
    ]);
}

protected function create(array $data){

    $validator = Validator::make($data, [
        'name' => 'required|string',
        'email' => 'required|string|email|exists:niigems',
        'password' => 'required|string',
    ]);

    if ($validator->fails()) {
        return Redirect::back()
                    ->withErrors($validator)
                    ->withInput();
    }

    return User::create([
        'name' => $data['name'],
        'email' => $data['email'],
        'password' => Hash::make($data['password']),
    ]);

}

}

Answer 1

创建用户时，您需要返回一些内容。

protected function create(array $data)
{
    $isEmailExists = Niigem::where('email', $data['email'])->count();
    if($isEmailExists){
        User::create([
        'name'     => $data['name'],
        'email'    => $data['email'],
        'password' => bcrypt($data['password']),
        ]);
        return ........ you need to return something here
    } else {
        return Redirect::back()->withErrors(['msg', 'The Message']);
    }
}

Answer 2

如果您在niigem表中存在一个新用户，我看到您正在尝试创建一个新用户。为此，您必须使用Laravel的validation类进行验证。因此，这应该可行：

protected function create(array $data)
{
    $validator = Validator::make($data, [
        'name' => 'required|string',
        'email' => 'required|string|email|exists:niigem',
        'password' => 'required|string',
    ]);

    if ($validator->fails()) {
        return Redirect::back()
                    ->withErrors($validator)
                    ->withInput();
    }

    return User::create([
        'name' => $data['name'],
        'email' => $data['email'],
        'password' => Hash::make($data['password']),
    ]);
}

Answer 3

另一种方法是：

Niigem::firstOrCreate(['email' => 'dummy@domain.com'], ['name'=> $data['name'], 'password' => bcrypt($data['password'])]);

Answer 4

protected function validator(array $data)
{
    return Validator::make($data, [
        'name'     => 'required|max:255',
        'email'    => 'required|max:255|unique:users|exists:niigems',
        'password' => 'required|min:6|confirmed',
    ]);
}

protected function create(array $data)
{
    User::create([
    'name'     => $data['name'],
    'email'    => $data['email'],
    'password' => bcrypt($data['password']),
    ]);
}

Answer 5

请使用此查询，您可以根据需要使用两种条件：

$ user = Niigem :: where（'email'，'='，Input :: get（'email'））-> first（）;

if（$ user === null）{

//用户不存在

}

如果（$ user！== null）

{

//用户不存在

}

Laravel 5如何检查我的其他表中是否存在用户

5 个答案: