Laravel 关系数据 return

Question

我有一个 table，它有一些关系数据，我可以很好地返回这些数据，但我也需要从返回的数据中获得关系。这是 Shop database，我对 Shop name 感兴趣。我只能从 shopDepartment table 中检索 shop_id。

我的 table 是：

DailyList
- id
- grocery_id
- amount
- completed

Grocery
- id
- name
- measurement

ShopDepartments
- id
- shop_id
- name
- order

Grocery_ShopDepartment
- id
- grocery_id
- shop_department_id

DailyList_ShopDepartment
- id
- daily_list_id
- shop_department_id

DailyList_priority
- id
- daily_list_id
- priority

Shop
- id
- name

这是来自 DailyList 模型的关系

class DailyList extends Model
{
    protected $guarded = [];

    public function dailylistpriority()
    {
        return $this->hasMany(DailyListPriority::class);
    }

    public function grocery()
    {
        return $this->belongsTo(Grocery::class);
    }
    public function shopDepartments()
    {
        return $this->belongsToMany(ShopDepartment::class)  ;
    }
}

DailylistController

public function index() // I need to have relationdata from shopdepartment
    {
        $list = DailyList::with(['grocery', 'shopdepartments', 'dailylistpriority'])->where('completed', 0)->get();
        return $list;
    }

这是我的输出

{ "id": 550, "grocery_id": 108, "amount": 1, "completed": 0, "created_at": "2020-03-25 19:45:43", "updated_at": "2020-03-25 19:45:43", "grocery": { "id": 108, "name": "Havregryn", "measurement": "Stk", "created_at": "2020-02-03 09:26:23", "updated_at": "2020-02-03 09:26:23" }, "shopdepartments": [ { "id": 3, "shop_id": 1, "name": "Hygiejne & Pleje", "order": "3", "created_at": null, "updated_at": null, "pivot": { "daily_list_id": 550, "shop_department_id": 3 } }, { "id": 17, "shop_id": 2, "name": "Ukendt", "order": "0", "created_at": null, "updated_at": null, "pivot": { "daily_list_id": 550, "shop_department_id": 17 } } ], "dailylistpriority": [] }

Answer 1

在你的 ShopDepartment.php class.

class ShopDepartment {

    $table = 'ShopDepartments';

    public function Shop()
    {
        return $this->belongsTo(Shop::class);
    }
}

然后您可以在 DailyList 查询中包含嵌套关系。

$list = DailyList::with(['grocery', 'shopdepartments.shop', 'dailylistpriority'])->where('completed', 0)->get();

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