RouteCollection.php第201行中的Laravel 5 MethodNotAllowedHttpException：

问题描述：

I have a number of php files in my project:

admin.blade.php: this files contains the admin form.

When called it show the following error:

MethodNotAllowedHttpException in RouteCollection.php line 201

<h2>Please Log In To Manage</h2>
<form id="form1" name="form1" method="post" action="<?=URL::to('/admin')?>">
   <input type="hidden" name="_token" value="{{ csrf_token() }}">
   User Name:<br />
   <input name="username" type="text" id="username" size="40" />
   <br /><br />
   Password:<br />
   <input name="password" type="password" id="password" size="40" />
   <br />
   <br />
   <br />
   <input type="submit" name="button" id="button" value="Log In" />
</form>

In route.php, this call is made:

Route::get('/admin',array('uses'=>'student@admin'));

This is the function in student.php

public function admin()
{
    return View::make('student.admin');
    $validator = Validator::make($data = Input::all() , User::rules());
    if ($validator->fails())
    {
        return Redirect::back()->withErrors($validator)->withInput();
    }
    else
    {
        $check = 0;
        $check = DB::table('admin')->get();
        $username = Input::get('username');
        $password = Input::get('password');
        if (Auth::attempt(['username' => $username, 'password' => $password]))
        {
            return Redirect::intended('/');
        }
        return Redirect::back()->withInput()->withErrors('That username/password combo does not exist.');
    }
}

I don't know much about creating an admin area, I am just trying to create it.

答

This is how I do it.

Routes.php

Route::get('/admin', 'UsersController@getAdminLogin');
Route::get('/admin/dashboard', 'UsersController@dashboard');
Route::post('/admin', 'UsersController@postAdminLogin');

admin_login.blade.php

{!! Form::open(['url' => '/admin']) !!}
    <div class="form-group">
        {!! Form::label('email', 'Email Id:') !!}
        {!! Form::text('email', null, ['class' => 'form-control input-sm']) !!}
    </div>
    <div class="form-group">
        {!! Form::label('password', 'Password') !!}
        {!! Form::password('password', ['class' => 'form-control input-sm']) !!}
    </div>
    <div class="form-group">
        {!! Form::submit('Login', ['class' => 'btn btn-primary btn-block']) !!}
    </div>
{!! Form::close() !!}

dashboard.blade.php

<h4 class="text-center">
    Welcome {{ Auth::user()->full_name }}
</h4>

UsersController.php

/**
 * Display the admin login form if not logged in,
 * else redirect him/her to the admin dashboard.
 *
 */
public function getAdminLogin()
{
    if(Auth::check() && Auth::user()->role === 'admin')
    {
        return redirect('/admin/dashboard');
    }
    return view('admin_login');
}

/**
 * Process the login form submitted, check for the
 * admin credentials in the users table. If match found,
 * redirect him/her to the admin dashboard, else, display
 * the error message.
 *
 */
public function postAdminLogin(Request $request)
{
    $this->validate($request, [
        'email'    => 'required|email|exists:users,email,role,admin',
        'password' => 'required'
    ]);

    $credentials = $request->only( 'email', 'password' );

    if(Auth::attempt($credentials))
    {
        return redirect('/admin/dashboard');
    }
    else
    {
        // Your logic of invalid credentials.
        return 'Invalid Credentials';
    }
}

/**
 * Display the dashboard to the admin if logged in, else,
 * redirect him/her to the admin login form.
 *
 */
public function dashboard()
{
    if(Auth::check() && Auth::user()->role === 'admin')
    {
        return view('admin.dashboard');
    }
    return redirect('/admin');
}

Your Code:

In routes.php, you have only 1 route, i.e.,

Route::get('/admin',array('uses'=>'student@admin'));

And there is no declaration of post method, hence, the MethodNotAllowedHttpException

Also, in your controller, you are returning the view first and then processing the form which is not going to work at all. You first need to process the form and then return the view.

public function admin(){
    // Won't work as you are already returning the view
    // before processing the admin form.
    return \View::make(students.admin);
    // ...
}

As @Sulthan has suggested, you should use Form Facade. You can check out this video on Laracasts about what Form Facade is and how you should use it.

答

You're using post method in the form but you're having get method in the routes.

So, Change the method to post in your routes

Note :

I recommend you to make use of the default form opening of Laravel like the below given which is always the best practise

{!! Form::open(array('url' => 'foo/bar')) !!}

{!! Form::close() !!}

Tips :

Read more on here and try to debug such things by comparing the methods and routes.

Form facade is not included in laravel 5 by default. You shall install it by

composer require "illuminate/html":"5.0.*"

and updating in the app.php.

I have written a blog which gives a breif about this installation.

答

You have no post route for your form data posting , use route match function for both http verb (get & post). use this

Route::match(['get', 'post'], '/admin', 'student@admin');

Also you need to change your admin method,

public function admin(Request $request){
    if($request->isMethod('get')){
        return \View::make('student.admin');
    } else {
    // your validation logic
    }
}

答

In routes.php, replace Route::get by Route::post.

答

In Routes web.php Your code is

Route::get('/admin',array('uses'=>'student@admin'));

which is wrong. Actually submitting data in POST method its array of data so you need to route through post instead of get. so correct code is

Route::post('/admin',array('uses'=>'student@admin'));

Follow this tutorial form Laracast it might helpful,
https://laracasts.com/series/laravel-from-scratch-2017/episodes/16

RouteCollection.php第201行中的Laravel 5 MethodNotAllowedHttpException：

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