Laravel Backpack CRUD not working

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.

1. 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 .

2. 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.