在laravel中雄辩的关系不适用于多行。
在laravel中雄辩的关系不适用于多行。
提问于 2020-11-07 18:18:10
表：优惠券
表shop_category:
优惠券模式：
use Model;
/**
* Model
*/
class Coupon extends Model
{
/**
* @var string The database table used by the model.
*/
public $table = 'coupons';
/**
* @var array Validation rules
*/
public $rules = [
];
public $belongsTo = [
'category' => ['ItScholarBd\Api\Models\Category','key' => 'id']
];
}类别模式：
use Model;
use Lang;
/**
* Model
*/
class Category extends Model
{
public $implement = ['@RainLab.Translate.Behaviors.TranslatableModel'];
public $translatable = ['name'];
/**
* @var string The database table used by the model.
*/
public $table = 'shop_category';
/**
* @var array Validation rules
*/
public $rules = [
];
public $attachOne = [
'icon' => 'System\Models\File'
];
}现在，我想得到以下类别的优惠券：
$records = \ItScholarBd\api\Models\Coupon::with(['category']);但当我按如下方式打印记录时：
echo '<pre>';print_r($records->toArray()); exit;它显示：
Array
(
[0] => Array
(
[id] => 4
[code] => FEAST50
[discount] => 2
[validity] => 2020-11-17 23:59:59
[min_order] => 40
[shop_category_id] => 1
[created_at] => 2020-11-07 17:13:40
[updated_at] => 2020-11-07 17:13:40
[category] =>
)
[1] => Array
(
[id] => 1
[code] => FEAST50
[discount] => 2
[validity] => 2020-11-17 23:59:59
[min_order] => 40
[shop_category_id] => 1
[created_at] => 2020-11-07 17:13:40
[updated_at] => 2020-11-07 17:13:40
[category] => Array
(
[id] => 1
[name] => Shopping
[created_at] => 2020-10-20 16:05:05
[updated_at] => 2020-10-20 16:05:05
)
)
)为什么第一个元素的“类别”索引是空的，因为两行优惠券表是相同的？我正在努力寻找错误，但没有运气。有什么暗示吗？
回答 1
Stack Overflow用户
发布于 2020-11-07 21:57:20
public function category(){
return $this->belongsTo(Category::class,'shop_category_id','id');
}Hi in模型
public function coupon(){
return $this->hasMany(Coupon::class);
}你可以称之为类别
$coupons = Coupon::with('category')->get();页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/64730949
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