php - Laravel 使用 'With' 子句将参数从 Controller 传递到模型

Question

我是 Laravel 的新手，我想使用 with 子句从模型中的 Controller 传递 $id

我的模型

class Menucategory extends Model
{
  protected $fillable = ['title', 'parent_id', 'restaurant_id'];

  // loads only direct children - 1 level
  public function children()
  {
    return $this->hasMany('App\Menucategory', 'parent_id');
  }

  // recursive, loads all descendants
  public function childrenRecursive()
  {
    return $this->children()->with('childrenRecursive');
  }
}

我的 Controller

public function show($id)
{
    $menucatagories = Menucategory::with('childrenRecursive')->where('restaurant_id',$id)->where('parent_id','0')->get();
    return $menucatagories;
}

我当前的输出是

[
  {
    "id": 1,
    "title": "TestMenu Parant",
    "parent_id": 0,
    "restaurant_id": 12,
    "children_recursive": [
      {
        "id": 2,
        "title": "TestMenu SubCat1",
        "parent_id": 1,
        "restaurant_id": 12,
        "children_recursive": [
          {
            "id": 6,
            "title": "TestMenu other sub cat",
            "parent_id": 2,
            *******************
            "restaurant_id": 13,
            *******************
            "children_recursive": []
          },
          {
            "id": 7,
            "title": "TestMenu other sub cat",
            "parent_id": 2,
            "restaurant_id": 12,
            "children_recursive": []
          }
        ]
      },
      {
        "id": 3,
        "title": "TestMenu SubCat2",
        "parent_id": 1,
        "restaurant_id": 12,
        "children_recursive": []
      }
    ]
  }
]

我通过了 $id=12 ，但问题是我在我的子数组中获取了其他 restaurant_id 的值，但如果我使用它，它会显示正确的 jSON

public function childrenRecursive()
{
   $id=12;    
   return $this->children()->with('childrenRecursive')->where('restaurant_id',$id);
}

我的问题是如何将 $id 从 Controller 传递到模型，或者还有其他方法吗？

Answer 1

您可以使用以下方式在 Controller 本身中传递参数。

     public function show($id)
     {
        $menucatagories =Menucategory::with(array('childrenRecursive'=>function($query) use ($id){
         $query->select()->where('restaurant_id',$id);
        }))
        ->where('restaurant_id',$id)->where('parent_id','0')->get();
        return $menucatagories;
      }