我对Laravel和Laravel背包很陌生。我昨天安装了演示版本，并试图创建我的第一个对象。
我的工作将由6个从属选择数据库下拉列表和一个字段组成。
我已禁用我的6个字段，只能使用一个选择下拉菜单“ product_type_id”进行测试。
我已经根据文档创建了
数据库表 楷模 控制者 路线 菜单项
当我加载我的CRUD时，我的CRUD已加载，但是出现以下错误：“错误加载页面。请刷新页面”。用Chrome Inspect功能，我可以看到Search POST生成了一个错误：
“消息”：“调用模型[App \ Models \ MageProduct]上未定义的关系[product_type]。”
无论我尝试什么，我总是会收到此错误。我当然会缺少一些东西，因此，在这里我将提供一些帮助。我当然已经阅读了有关StackOverflow上未定义关系的其他类似问题，但我自己无法解决。请在此后找到我的型号和控制器。预先感谢您的支持，干杯，马克
模型图像产品
<?php
namespace App\Models;
use Backpack\CRUD\CrudTrait;
use Backpack\CRUD\ModelTraits\SpatieTranslatable\HasTranslations;
use Illuminate\Database\Eloquent\Model;
use App\models\MageProductType;
class MageProduct extends Model
{
use CrudTrait;
use HasTranslations;
/*
|--------------------------------------------------------------------------
| GLOBAL VARIABLES
|--------------------------------------------------------------------------
*/
protected $table = 'mage_products';
protected $primaryKey = 'id';
public $timestamps = true;
// protected $guarded = ['id'];
protected $fillable = ['product_type_id'];
// protected $hidden = [];
// protected $dates = [];
// public $translatable = [];
/*
|--------------------------------------------------------------------------
| FUNCTIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| RELATIONS
|--------------------------------------------------------------------------
*/
public function ProductTypes()
{
return $this->hasMany('App\Models\MageProductType', 'product_type_id');
// return $this->hasMany(MageProductType::class);
}
/*
|--------------------------------------------------------------------------
| SCOPES
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| ACCESORS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| MUTATORS
|--------------------------------------------------------------------------
*/
}
模型图像产品类型
<?php
namespace App\Models;
use Backpack\CRUD\CrudTrait;
use Illuminate\Database\Eloquent\Model;
use App\models\MageProduct;
class MageProductType extends Model
{
use CrudTrait;
/*
|--------------------------------------------------------------------------
| GLOBAL VARIABLES
|--------------------------------------------------------------------------
*/
protected $table = 'mage_product_types';
protected $primaryKey = 'id';
// protected $guarded = [];
// protected $hidden = ['id'];
protected $fillable = ['product_type'];
public $timestamps = true;
/*
|--------------------------------------------------------------------------
| FUNCTIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| RELATIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| SCOPES
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| ACCESORS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| MUTATORS
|--------------------------------------------------------------------------
*/
}
控制器
<?php
namespace App\Http\Controllers\Admin;
// use App\Http\Requests\TagRequest as StoreRequest;
// VALIDATION: change the requests to match your own file names if you need form validation
// use App\Http\Requests\TagRequest as UpdateRequest;
use Backpack\CRUD\app\Http\Controllers\CrudController;
use App\Models\MageProductType;
class MageProductCrudController extends CrudController
{
public function setup()
{
/*
|--------------------------------------------------------------------------
| CrudPanel Basic Information
|--------------------------------------------------------------------------
*/
$this->crud->setModel('App\Models\MageProduct');
$this->crud->setRoute(config('backpack.base.route_prefix').'/produit');
// $this->crud->setRoute("admin/produitsmage");
$this->crud->setEntityNameStrings('produit', 'produits');
// $this->crud->enableAjaxTable();
/*
|--------------------------------------------------------------------------
| BASIC CRUD INFORMATION
|--------------------------------------------------------------------------
*/
// ------ CRUD COLUMNS
$this->crud->addColumn([
'label' => 'Type',
'type' => 'select',
'name' => 'product_type_id',
'entity' => 'product_type',
'model' => 'App\Models\MageProductType',
]);
// ------ CRUD FIELDS
$this->crud->addField([ // SELECT
'label' => 'Type',
'type' => 'select',
'name' => 'product_type_id',
'entity' => 'product_type',
'attribute' => 'product_type',
'model' => 'App\Models\MageProductType',
]);
}
public function store(StoreRequest $request)
{
// your additional operations before save here
$redirect_location = parent::storeCrud($request);
// your additional operations after save here
// use $this->data['entry'] or $this->crud->entry
return $redirect_location;
}
public function update(UpdateRequest $request)
{
// your additional operations before save here
$redirect_location = parent::updateCrud($request);
// your additional operations after save here
// use $this->data['entry'] or $this->crud->entry
return $redirect_location;
}
}