Php Laravel与不同外键的雄辩关系

Laravel版本为7.0：

我已经建立了这样的模型关系

<?php

namespace App;


class Template extends Model
{

    protected $fillable = ['header_id', 'content', 'name'];

    public function header()
    {
        return $this->belongsTo('App\Header', 'header_id');
    }
}

我想查看新的标题关系：

当我在视图中执行

$template->header

时，是否有任何方法返回新的标题关系

---

谢谢你

是的，你可以做你想做的事，但有点破坏了数据库中的关系。您可以将任何id分配给

$template->header\u id

，然后使用该新值加载关系：

$template->header_id = 897;

// load the relationship, will use the new value
// just in case the relationship was already loaded we make sure
// to load it again, since we have a different value for the key
$template->load('header'); 

$template->header; // should be header with id = 897

<?php

namespace App\Http\Controllers;
use App\Template;

class TemplateController extends Controller
{

   public function show($id, $temp_header_id)
   {
     $template = Template::find($id);
     $template->header_id = $temp_header_id;
   }
}

$template->header_id = 897;

// load the relationship, will use the new value
// just in case the relationship was already loaded we make sure
// to load it again, since we have a different value for the key
$template->load('header'); 

$template->header; // should be header with id = 897