1

我按照本教程设置了一个 CRUD 示例。但我无法让它工作，我不知道为什么。这是我的代码

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;
    }
}

模型，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;
}

请求，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 [
            //
        ];
    }
}

然后，路线

<?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');
    });
});

我可以访问http://localhost/myapp/public/admin/test成功，但我无法访问http://localhost/myapp/public/admin/someitem，它总是返回错误500

我是 laravel （和 PHP）的新手，任何帮助表示赞赏。谢谢！

4

1 回答 1

3

我想让我的答案非常详细，所以这就是我从头开始的原因。我使用的背包 CRUD 版本是 ^3.2。

  1. 看看这个文件your-project/vendor/backpack/crud/src/CrudServiceProvider.php 是的，我知道类名不是CRUD但是CrudServiceProvider。那是因为他们在其中有register方法，CrudServiceProvider并且他们这样做了$loader->alias('CRUD', \Backpack\CRUD\CrudServiceProvider::class);，这使得CRUD类别名为CrudServiceProvider. 要了解更多关于它如何在内部工作的信息，请阅读 Laravel Service Providers、Service Container和Facades。

  2. 所以我们已经弄清楚这CRUD::resource()实际上是什么意思CrudServiceProvider::resource()，所以使用这个方法，据我所知，你会发现只有一行return new CrudRouter($name, $controller, $options);（如果我错了，请纠正我）它被称为工厂模式/方法。所以去CrudRouter构造函数（Github）。通读一遍。所以它所做的基本事情不是这个

    CRUD::resource('pelayanan', 'Admin\PelayananCrudController');

它会放这样的东西

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',
    ]);

你说你不能访问你public/admin/someitem，这是真的，因为你没有它的路线（实际上用 cli 检查路线artisan route:list）。但是 Backpack 开发人员做了一件事（实际上并不知道为什么），他们通过调用在析构函数方法中添加了额外的路由

`Route::resource($this->name, $this->controller, $options_with_default_route_names);`.

并且它应该实际上可以工作，如果不是，请检查index(CrudController) 的行为方式。

还有一件事可能是您忘记了php artisan vendor:publish --provider="Backpack\Base\BaseServiceProvider"并且没有查看文件，这就是您收到 500 错误的原因。

如果您有更多问题，请提出。

于 2017-03-19T10:34:36.533 回答