使用laravel，我的产品页面中的类别很少。 当我创建新产品并单击保存时，它给我一个错误：
未找到“Тype”类
`protected function newRelatedInstance($class)
{
return tap(new $class, function ($instance) {
if (! $instance->getConnectionName()) {
$instance->setConnection($this->connection);
}
});
}`
尽管出现错误，日期仍保存在日期库中，并出现在产品列表页面中。
产品型号
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Backpack\CRUD\CrudTrait;
use Cviebrock\EloquentSluggable\Sluggable;
use Cviebrock\EloquentSluggable\SluggableScopeHelpers;
class Product extends Model
{
use CrudTrait;
use Sluggable, SluggableScopeHelpers;
/*
|--------------------------------------------------------------------------
| GLOBAL VARIABLES
|--------------------------------------------------------------------------
*/
protected $table = 'products';
// protected $primaryKey = 'id';
// public $timestamps = false;
// protected $guarded = ['id'];
protected $fillable = ['name','description','slug', 'type_id', 'productcat_id', 'material_id', 'enviroment_id', 'manifacture_id'];
// protected $hidden = [];
// protected $dates = [];
/**
* Return the sluggable configuration array for this model.
*
* @return array
*/
public function sluggable()
{
return [
'slug' => [
'source' => 'slug_or_name',
],
];
}
/*
|--------------------------------------------------------------------------
| FUNCTIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| RELATIONS
|--------------------------------------------------------------------------
*/
public function type(){
return $this->belongsTo('Тype');
}
public function productcat(){
return $this->belongsTo('Productcat');
}
public function material(){
return $this->belongsTo('Material');
}
public function environment(){
return $this->belongsTo('Environment');
}
public function manifacture(){
return $this->belongsTo('Manifacture');
}
/*
|--------------------------------------------------------------------------
| SCOPES
|--------------------------------------------------------------------------
*/
public function scopeFirstLevelItems($query)
{
return $query->where('depth', '1')
->orWhere('depth', null)
->orderBy('lft', 'ASC');
}
/*
|--------------------------------------------------------------------------
| ACCESORS
|--------------------------------------------------------------------------
*/
// The slug is created automatically from the "name" field if no slug exists.
public function getSlugOrNameAttribute()
{
if ($this->slug != '') {
return $this->slug;
}
return $this->name;
}
/*
|--------------------------------------------------------------------------
| MUTATORS
|--------------------------------------------------------------------------
*/
}
产品控制程序
<?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\ProductRequest as StoreRequest;
use App\Http\Requests\ProductRequest as UpdateRequest;
/**
* Class ProductCrudController
* @package App\Http\Controllers\Admin
* @property-read CrudPanel $crud
*/
class ProductCrudController extends CrudController
{
public function setup()
{
/*
|--------------------------------------------------------------------------
| BASIC CRUD INFORMATION
|--------------------------------------------------------------------------
*/
$this->crud->setModel('App\Models\Product');
$this->crud->setRoute(config('backpack.base.route_prefix') . '/product');
$this->crud->setEntityNameStrings('product', 'products');
/*
|--------------------------------------------------------------------------
| BASIC CRUD INFORMATION
|--------------------------------------------------------------------------
*/
//$this->crud->setFromDb();
// ------ CRUD COLUMNS
$this->crud->addColumn([
'name' => 'name',
'label' => 'Name',
]);
$this->crud->addColumn([
'name' => 'slug',
'label' => 'Slug',
]);
// ------ CRUD FIELDS
$this->crud->addField([ // SELECT
'label' => 'Тип',
'type' => 'select',
'name' => 'type_id',
'entity' => 'type',
'attribute' => 'name',
'model' => "App\Models\Type",
'wrapperAttributes' => ['class' => 'col-md-4'],
]);
$this->crud->addField([ // SELECT
'label' => 'Продукти',
'type' => 'select',
'name' => 'productcat_id',
'entity' => 'productcat',
'attribute' => 'name',
'model' => "App\Models\Productcat",
'wrapperAttributes' => ['class' => 'col-md-4'],
]);
$this->crud->addField([ // SELECT
'label' => 'Материал',
'type' => 'select',
'name' => 'material_id',
'entity' => 'material',
'attribute' => 'name',
'model' => "App\Models\Material",
'wrapperAttributes' => ['class' => 'col-md-4'],
]);
$this->crud->addField([ // SELECT
'label' => 'Среда',
'type' => 'select',
'name' => 'environment_id',
'entity' => 'envirnment',
'attribute' => 'name',
'model' => "App\Models\Environment",
'wrapperAttributes' => ['class' => 'col-md-4'],
]);
$this->crud->addField([ // SELECT
'label' => 'Производител',
'type' => 'select',
'name' => 'manifacture_id',
'entity' => 'manifacture',
'attribute' => 'name',
'model' => "App\Models\Manifacture",
'wrapperAttributes' => ['class' => 'col-md-4'],
]);
$this->crud->addField([
'name' => 'name',
'label' => 'Заглавие (Име на продукта с кратко описание)',
'wrapperAttributes' => ['class' => 'col-md-6'],
]);
$this->crud->addField([
'name' => 'slug',
'label' => 'Slug (URL)',
'type' => 'text',
'hint' => 'Will be automatically generated from your name, if left empty.',
'wrapperAttributes' => ['class' => 'col-md-6'],
]);
$this->crud->addField([ // WYSIWYG
'name' => 'description',
'label' => 'Описание',
'type' => 'textarea',
]);
// add asterisk for fields that are required in ProductRequest
$this->crud->setRequiredFields(StoreRequest::class, 'create');
$this->crud->setRequiredFields(UpdateRequest::class, 'edit');
}
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;
}
}
类型模型
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Backpack\CRUD\CrudTrait;
class Type extends Model
{
use CrudTrait;
/*
|--------------------------------------------------------------------------
| GLOBAL VARIABLES
|--------------------------------------------------------------------------
*/
protected $table = 'types';
// protected $primaryKey = 'id';
// public $timestamps = false;
// protected $guarded = ['id'];
protected $fillable = ['name'];
// protected $hidden = [];
// protected $dates = [];
/*
|--------------------------------------------------------------------------
| FUNCTIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| RELATIONS
|--------------------------------------------------------------------------
*/
public function product() {
return $this->hasMany('Product');
}
使用背包3.4 Laravel 5.6 mysql.5.6
答案 0 :(得分：1)
没有名为Type的类。您在这些关系中指的是模型名称。当将类作为字符串引用时，它们是完全限定名称。
Type是根名称空间中类Type的完全限定名称。根命名空间中没有名为Type的类。
我敢打赌，尽管您有App\Models\Type。
这是使用类常量而不是字符串文字Class::class的另一个原因。
答案 1 :(得分：0)
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
use Backpack\CRUD\CrudTrait;
class Type extends Model
{
use CrudTrait;
/*
|--------------------------------------------------------------------------
| GLOBAL VARIABLES
|--------------------------------------------------------------------------
*/
protected $table = 'types';
// protected $primaryKey = 'id';
// public $timestamps = false;
// protected $guarded = ['id'];
protected $fillable = ['name'];
// protected $hidden = [];
// protected $dates = [];
/*
|--------------------------------------------------------------------------
| FUNCTIONS
|--------------------------------------------------------------------------
*/
/*
|--------------------------------------------------------------------------
| RELATIONS
|--------------------------------------------------------------------------
*/
public function product() {
return $this->hasMany('Product');
}
}
我认为您在导致该问题的类型类中缺少一个结束符。请检查您是否正在正确使用课程结束}。