PianoTime/app/Http/Controllers/Teacher/Auth/LoginController.php

<?php

namespace App\Http\Controllers\Teacher\Auth;

use App\Models\Teacher;
use App\Http\Controllers\Teacher\Controller;
use Illuminate\Foundation\Auth\AuthenticatesUsers;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Validator;

class LoginController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Login Controller
    |--------------------------------------------------------------------------
    |
    | This controller handles authenticating users for the application and
    | redirecting them to your home screen. The controller uses a trait
    | to conveniently provide its functionality to your applications.
    |
    */

    use AuthenticatesUsers;

    /**
     * Where to redirect users after login.
     *
     * @var string
     */
    protected $redirectTo = '/teacher';

    /**
     * 重写登录视图页面
     * @author 晚黎
     * @date   2016-09-05T23:06:16+0800
     * @return [type]                   [description]
     */
    public function showLoginForm()
    {
        return view('teacher.auth.login');
    }
    /**
     * 自定义认证驱动
     * @author 晚黎
     * @date   2016-09-05T23:53:07+0800
     * @return [type]                   [description]
     */
    protected function guard()
    {
        return auth()->guard('teacher');
    }

    public function username()
    {
        return 'phone';
    }

    public function login(Request $request)
    {
        $validator = Validator::make($request->all(), [
            $this->username() => 'required|string',
            'password' => 'required|string'
        ]);
        if($validator->fails()) {
            return back()->withErrors($validator);
        }

        // If the class is using the ThrottlesLogins trait, we can automatically throttle
        // the login attempts for this application. We'll key this by the username and
        // the IP address of the client making these requests into this application.
        if ($this->hasTooManyLoginAttempts($request)) {
            $this->fireLockoutEvent($request);

            return $this->sendLockoutResponse($request);
        }

        if ($this->attemptLogin($request)) {
            return $this->sendLoginResponse($request);
        }

        // If the login attempt was unsuccessful we will increment the number of attempts
        // to login and redirect the user back to the login form. Of course, when this
        // user surpasses their maximum number of attempts they will get locked out.
        $this->incrementLoginAttempts($request);

        return $this->showWarning('密码或者手机错误', '/teacher/login');

//        return $this->sendFailedLoginResponse($request);
    }

    public function logout()
    {
        Auth::guard('teacher')->logout();
        return redirect('/teacher/login');

    }

    public function showChangePasswordForm(Request $request)
    {
        return view('teacher.auth.change-password');
    }

    public function changePassword(Request $request)
    {
        $teacher = Auth::guard('teacher')->user();
        if(!empty($request->input('password'))) {
            $teacher->password = bcrypt($request->input('password'));
            $teacher->save();
        }
        return $this->showMessage('操作成功');
    }
}