Laravel 8 登录后重定向到仪表盘的全面指南

<?php

namespace App\Http\Middleware;

use Closure;
use App\Providers\RouteServiceProvider;
use Illuminate\Support\Facades\Auth;

class RedirectIfAuthenticated
{
    public function handle($request, Closure $next, $guard = null)
    {
        if (Auth::guard($guard)->check()) {
            // 如果用户已登录，则重定向到 RouteServiceProvider::DASH
            return redirect(RouteServiceProvider::DASH);
        }
        return $next($request);
    }
}

<?php

namespace App\Providers;

use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Route;

class RouteServiceProvider extends ServiceProvider
{
    public const HOME = '/';
    public const DASH = '/dashboard'; // 定义仪表盘路径常量
    // ... 其他代码
}

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Session; // 引入 Session Facade

class LoginController extends Controller
{
    use AuthenticatesUsers {
        login as protected defaultLogin; // 重命名 AuthenticatesUsers 中的 login 方法
    }

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/dashboard'; // 默认重定向路径，但在此自定义方法中会被覆盖

    /**
     * Create a new controller instance.
     *
     * @return void
     */
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }

    /**
     * 处理用户登录请求。
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Http\Response|\Illuminate\Http\JsonResponse
     */
    public function login(Request $request)
    {
        // 1. 定义验证消息
        $messages = [
            'email.required'    => '邮箱字段是必填的。',
            'password.required' => '密码字段是必填的。',
        ];

        // 2. 执行请求验证
        $this->validate($request, [
            'email'    => 'required|email',
            'password' => 'required',
        ], $messages);

        $credentials = $request->only('email', 'password');
        // 假设用户表中有一个 'status' 字段，且只有 status = 1 的用户才能登录
        $credentials['status'] = 1; 

        // 3. 尝试认证用户
        if (Auth::attempt($credentials)) {
            // 认证成功
            Session::flash('success', '欢迎回来，' . Auth::user()->name . '！');
            // 显式重定向到 'dashboard' 命名路由
            return redirect()->route('dashboard');
        } else {
            // 认证失败
            Session::flash('error', '抱歉！请重试。您的登录凭据不正确或账户状态异常。');
            // 重定向回上一页
            return redirect()->back()->withInput($request->only('email'));
        }
    }
}

<?php

use App\Http\Controllers\HomeController;
use Illuminate\Support\Facades\Route;
use Illuminate\Support\Facades\Auth;

/*
|--------------------------------------------------------------------------
| Site 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!
|
*/

Auth::routes(); // 注册 Laravel 默认的认证路由

Route::get('/', [HomeController::class, 'index'])->name('home');

// 仪表盘路由组，通常需要认证才能访问
Route::group(['prefix' => 'dashboard', 'middleware' => ['web', 'auth']], function () {
    Route::get('/', [HomeController::class, 'admin_index'])->name('dashboard');
    // ... 其他仪表盘相关的路由
});

<?php

namespace App\Providers;

use Illuminate\Foundation\Support\Providers\RouteServiceProvider as ServiceProvider;
use Illuminate\Support\Facades\Route;

class RouteServiceProvider extends ServiceProvider
{
    protected $namespace = 'App\Http\Controllers'; // 确保控制器命名空间正确

    // ... 其他代码

    protected function mapSiteRoutes()
    {
        Route::middleware('web')
             ->namespace($this->namespace)
             ->group(base_path('routes/site.php'));
    }
}