Laravel Backpack CRUD not working - php

Question

i followed this tutorial to setup a CRUD example. But i can't get it to work and i don't know why. here is my code
SomeitemCrudController.php
<?php
namespace App\Http\Controllers\Admin;
use Backpack\CRUD\app\Http\Controllers\CrudController;
// VALIDATION: change the requests to match your own file names if you need form validation
use App\Http\Requests\SomeitemRequest as StoreRequest;
use App\Http\Requests\SomeitemRequest as UpdateRequest;
class SomeitemCrudController extends CrudController
{
public function setUp()
{
/*
|--------------------------------------------------------------------------
| BASIC CRUD INFORMATION
|--------------------------------------------------------------------------
*/
$this->crud->setModel("App\Models\Someitem");
$this->crud->setRoute("admin/someitem");
$this->crud->setEntityNameStrings('someitem', 'someitems');
/*
|--------------------------------------------------------------------------
| BASIC CRUD INFORMATION
|--------------------------------------------------------------------------
*/
$this->crud->setFromDb();
// $this->crud->setColumns(['nama']);
$this->crud->addField([
'nama' => 'Nama',
'keterangan' => 'Keterangan',
'harga' => 'Harga'
]);
}
public function store(StoreRequest $request)
{
$redirect_location = parent::storeCrud();
return $redirect_location;
}
public function update(UpdateRequest $request)
{
$redirect_location = parent::updateCrud();
return $redirect_location;
}
}
the model, Someitem.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
use Backpack\CRUD\CrudTrait;
class SomeItem extends Model
{
use CrudTrait;
//
protected $table = 'someitem';
protected $fillable = ['nama', 'keterangan', 'harga'];
public $timestamps = true;
}
the request, SomeitemRequest.php
<?php
namespace App\Http\Requests;
use App\Http\Requests\Request;
class SomeitemRequest extends \Backpack\CRUD\app\Http\Requests\CrudRequest
{
/**
* Determine if the user is authorized to make this request.
*
* #return bool
*/
public function authorize()
{
return \Auth::check();
}
/**
* Get the validation rules that apply to the request.
*
* #return array
*/
public function rules()
{
return [
// 'name' => 'required|min:5|max:255'
];
}
/**
* Get the validation attributes that apply to the request.
*
* #return array
*/
public function attributes()
{
return [
//
];
}
/**
* Get the validation messages that apply to the request.
*
* #return array
*/
public function messages()
{
return [
//
];
}
}
and then, the routes
<?php
Route::group([
'prefix' => config('backpack.base.route_prefix', 'admin'),
'middleware' => ['admin'],
'namespace' => 'Admin'
], function() {
CRUD::resource('pelayanan', 'Admin\PelayananCrudController');
Route::get('/test', function () {
return view('welcome');
});
});
i can access http://localhost/myapp/public/admin/test successfully, but i can't access http://localhost/myapp/public/admin/someitem , it always return Error 500
i'm new to laravel (and PHP), any helps is appreciated. thanks!

Answer 1

I want to make my answer very detailed, so that's why I've started it from the beginning. The version for backpack CRUD I use is ^3.2.
look at this file your-project/vendor/backpack/crud/src/CrudServiceProvider.php
Yes I know that class name is not CRUD but CrudServiceProvider. That is because they have register method in CrudServiceProvider and in it they do $loader->alias('CRUD', \Backpack\CRUD\CrudServiceProvider::class); which makes CRUD class alias to CrudServiceProvider. To know more about how it works inside read through Laravel Service Providers, Service Container and Facades.
So we've figured out that CRUD::resource() actually means CrudServiceProvider::resource(), so get to this method, there you will find only one line return new CrudRouter($name, $controller, $options); as far as I know (if I'm wrong correct me) it's called Factory pattern/method. So go to CrudRouter constructor (Github). Read through it. So the basic thing it does is instead of this
CRUD::resource('pelayanan', 'Admin\PelayananCrudController');
it will put something like this
Route::post('pelayanan/search', [
'as' => 'crud.pelayanan.search',
'uses' => 'Admin\PelayananCrudController#search',
]);
Route::get('pelayanan/reorder', [
'as' => 'crud.pelayanan.reorder',
'uses' => 'Admin\PelayananCrudController#reorder',
]);
Route::post('pelayanan/reorder', [
'as' => 'crud.pelayanan.save.reorder',
'uses' => 'Admin\PelayananCrudController#saveReorder',
]);
Route::get('pelayanan/{id}/details', [
'as' => 'crud.pelayanan.showDetailsRow',
'uses' => 'Admin\PelayananCrudController#showDetailsRow',
]);
Route::get('pelayanan/{id}/translate/{lang}', [
'as' => 'crud.pelayanan.translateItem',
'uses' => 'Admin\PelayananCrudController#translateItem',
]);
Route::get('pelayanan/{id}/revisions', [
'as' => 'crud.pelayanan.listRevisions',
'uses' => 'Admin\PelayananCrudController#listRevisions',
]);
Route::post('pelayanan/{id}/revisions/{revisionId}/restore', [
'as' => 'crud.pelayanan.restoreRevision',
'uses' => 'Admin\PelayananCrudController#restoreRevision',
]);
You said that you can't acces you public/admin/someitem and that's true, because you don't have route for it (actually check routes in cli with artisan route:list). But Backpack developers made one thing (don't actually know why) they put extra routes in destructor method by calling
`Route::resource($this->name, $this->controller, $options_with_default_route_names);`.
And by it should actually work, if it's not, check how index (CrudController) behaves.
One more thing maybe you forgot to php artisan vendor:publish --provider="Backpack\Base\BaseServiceProvider" and you don't have view files and that's why you get 500 error.
If you have more questions, just ask.