Laravel 5.4 redirect taking method from request object

问题

Recently I have started a Laravel 5.4 project and I found something I don't quite understand and I'm posting this question hoping to solve this issue and find out if it's expected behaviour or a bug.

The thing is, I'm submitting an update form which looks like so:

<form id="post-form" action="{{url('admin/posts/'.$post->id)}}" method="POST">
  {{ csrf_field() }}
  {{ method_field('PUT') }}
  <!-- Some fields -->
</form>

And I try to validate that request on the controller method:

$validator = Validator::make($request->all(), [
        // Fields to validate
    ]);
if ($validator->fails()) {
   return back()
   ->withErrors($validator)
   ->withInput();
}

My problem comes when the validation fails and the redirect is performed, because I get a code 405 error MethodNotAllowedHttpException.

Indeed, the url is correct but the method is wrong, as shown in the HTTP headers:

Request URL:https://myproject.dev/admin/posts/1/edit
Request Method:PUT
Status Code:405 
Remote Address:127.0.0.1:443
Referrer Policy:no-referrer-when-downgrade

It should be a GET instead of a PUT. My best guess is that is using the _method property of the $request object to redirect, instead of using the GET method.

A dump($request->all()) right before the redirect call:

array:19 [
  "_token" => "XOtwEeXwgnuc8fNqCwxkdO992bU6FObDwTuCg1cJ"
  "_method" => "PUT"
  //fields
]

Some things I have already tried with no luck:

• Unsetting the _method from the request: unset($request['_method'])

• Name the route and redirect based in that name:

  // The routes file (routes/web.php)
  Route::get('posts/{id}/edit', 'PostsController@edit')->name('edit-post');
  
  // The redirect (controller)
  return redirect()->route('edit-post', ['id' => 1])
      ->withErrors($validator)
      ->withInput();
  

• Specify the url in the redirect

  // The redirect (controller)
  return redirect('admin/posts/'.$post->id.'/edit')
      ->withErrors($validator)
      ->withInput();
  

So how could I perform that redirect with a normal GET method? Is this an expected behaviour? Thank you in advance, any advice or hint is much appreciated.

回答1:

You need a separate put route in your routes.php file.

Route::get('posts/{id}/edit', 'PostsController@edit')->name('edit-post');
Route::put('posts/{id}/edit', 'PostsController@edit')->name('edit-post');

The get function means this route will handle routes using the GET method. You need to add a put to handle requests using the PUT method. All available route methods are available in the documentation.

---

You can also use the match function to match multiple methods in one line. Like so:

Route::match(['get', 'put'], 'posts/{id}/edit', 'PostsController@edit');

来源：https://stackoverflow.com/questions/44499232/laravel-5-4-redirect-taking-method-from-request-object