Error: Class Does not exist in Laravel - php

Question

I am having the following error
InvalidArgumentException in FormBuilder.php line 39:
Form class with name App\Http\Controllers\App\Forms\SongForm does not exist.
on Laravel,
SongsController.php class
<?php
namespace App\Http\Controllers;
use Illuminate\Routing\Controller as BaseController;
use Kris\LaravelFormBuilder\FormBuilder;
class SongsController extends BaseController {
public function create(FormBuilder $formBuilder)
{
$form = $formBuilder->create(App\Forms\SongForm::class, [
'method' => 'POST',
'url' => route('song.store')
]);
return view('song.create', compact('form'));
}
public function store(FormBuilder $formBuilder)
{
$form = $formBuilder->create(App\Forms\SongForm::class);
if (!$form->isValid()) {
return redirect()->back()->withErrors($form->getErrors())->withInput();
}
// Do saving and other things...
}
}
SongForm.php
<?php
namespace App\Forms;
use Kris\LaravelFormBuilder\Form;
class SongForm extends Form
{
public function buildForm()
{
$this
->add('name', 'text', [
'rules' => 'required|min:5'
])
->add('lyrics', 'textarea', [
'rules' => 'max:5000'
])
->add('publish', 'checkbox');
}
}
routes.php
Route::get('songs/create', [
'uses' => 'SongsController#create',
'as' => 'song.create'
]);
Route::post('songs', [
'uses' => 'SongsController#store',
'as' => 'song.store'
]);
And I do not know where is the problem because the file exist in the project folder.

Answer 1

Explanation of the Error
Here:
$form = $formBuilder->create(App\Forms\SongForm::class, [
'method' => 'POST',
'url' => route('song.store')
]);
You're specifing the class name with a namespace relative to the current namespace:
App\Forms\SongForm::class
the full class name will be built relatively from the current namespace that is:
namespace App\Http\Controllers;
So, the class you're passing as parameter becomes:
App\Http\Controllers\App\Forms\SongForm::class
That class doesn't exists, and so you get the error
How to solve
To solve, you can specify the absolute namespace. Change this:
App\Forms\SongForm::class
to this:
\App\Forms\SongForm::class
and it should work