Laravel Eloquent Query Builder（使用查询存在，使用whereHas）

Question

表格

PROFILE
id    address    type    approved    fky_profile_vendor_id

VENDOR
id    name

PRODUCT
id    name    price    instock    fky_prod_vendor_id

关系

PROFILE <-(one-to-one)-> VENDOR <- (one-to-many) -> PRODUCT

查询

Eloquent 查询所有有货的产品

PRODUCT::where('instock','>',0)->get();

我怎样才能获得认可供应商的所有库存产品？

谢谢

K

Answer 1

App\Profile

use Illuminate\Database\Eloquent\Model;

class Profile extends Model {

    public function scopeApproved($query)
    {
        return $query->where('approved', 'y');
    }

    public function vendor()
    {
        return $this->belongsTo('App\Vendor');
    }

}

--

App\Vendor

use Illuminate\Database\Eloquent\Model;

class Vendor extends Model {

    public function profile()
    {
        return $this->hasOne('App\Profile');
    }

    public function products()
    {
        return $this->hasMany('App\Product');
    }

}

--

App\Product

use Illuminate\Database\Eloquent\Model;

class Product extends Model {

    public function vendor()
    {
        return $this->belongsTo('App\Vendor');
    }

}

使用方法：

$vendors = Vendor::whereHas('profile', function ($q) { $q->approved(); })->with('products')->get();

$products = $vendors->map(function ($vendor)
{
    return $vendor->products;
});

这将 return Collection 的 Products 的 Vendor 获得批准 Profile。

Laravel Eloquent Query Builder（使用查询存在，使用whereHas）

Laravel Eloquent Query Builder (Using query existence, using whereHas)

query-builder

laravel

eloquent