我正在使用Laravel 5.2。
我有3个表(写作者,出版商和类别)所有的一对多关系与表名为books。
我不确定问题是什么,但是每当我从我的视图刀片中调用其中两个(来自publishers表的nama_penerbit和来自类别表的nama_kategori)的列时,它会抛出一个错误试图获取非属性宾语
这是我的模特
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Book extends Model
{
protected $fillable = [
'judul',
'label',
'isbn',
'tanggal_terbit',
'status',
'id_penulis',
'id_penerbit',
'id_kategori',
];
// Book with Writter
public function writter()
{
return $this->belongsTo('App\Writter', 'id_penulis');
}
// Book with Publisher
public function publisher()
{
return $this->belongsTo('App\Writter', 'id_penerbit');
}
// Book with Category
public function category()
{
return $this->belongsTo('App\Writter', 'id_kategori');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Publisher extends Model
{
protected $fillable = [
'nama_penerbit',
];
// Relation Book with Publisher
public function book() {
return $this->hasMany('App\Book', 'id_penerbit');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Writter extends Model
{
protected $fillable = [
'nama_penulis',
];
// Relation Book with Writter
public function book() {
return $this->hasMany('App\Book', 'id_penulis');
}
}
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Category extends Model
{
protected $fillable = [
'nama_kategori',
];
// Relation Book with Category
public function book() {
return $this->hasMany('App\Book', 'id_kategori');
}
}
<span>{{ $book->writter->nama_penulis }}</span> // works like a charm
<span>{{ $book->publisher->nama_penerbit }}</span> // throw me an error
<span>{{ $book->category->nama_kategori }}</span> // throw me an error
我的问题是为什么nama_penerbit和nama_kategori抛出错误而另一个运行良好
有什么建议吗?
您正在为所有三种关系使用Writter
模型,因此请通过设置正确的模型来修复这些关系:
// Book with Publisher
public function publisher()
{
return $this->belongsTo('App\Publisher', 'id_penerbit');
}
// Book with Category
public function category()
{
return $this->belongsTo('App\Category', 'id_kategori');
}