php Laravel 模型返回“未定义的属性：stdClass::$name”
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Laravel model returns "Undefined property: stdClass::$name"
提问by TorrBallen
I keep trying to get my class model to work but it keeps returning this error.
The model looks like:
我一直试图让我的类模型正常工作，但它不断返回此错误。
该模型看起来像：
class Food
{
protected $id;
public function __construct($id)
{
$results = DB::select('select * from food where id = ?', array($id));
if ( empty($results) )
{
throw new Exception('Food do not exsist.');
} else {
$this->food = (object) $results;
}
}
public function name()
{
return $this->food->name;
}
}
And when I call it:
当我调用它时：
$food = new Food($id);
var_dump($food->name()); exit;
Returns:
返回：
Undefined property: stdClass::$name
回答by monque
Base on your code, DB::selectwill return an array which contains several objects (may be more than one), and then you assign it to $this->food.
根据您的代码，DB::select将返回一个包含多个对象（可能不止一个）的数组，然后您将其分配给$this->food.
Remember, the $this->foodlooks like
记住，$this->food看起来像
Array (
[0] => stdClass Object (
[name] => 'Beef'
)
)
Actually, $this->food->nameis trying to access an undefined property.
实际上，$this->food->name正在尝试访问未定义的属性。
Solution 1:
解决方案1：
You should use $this->food[0]->nameto access it.
您应该使用$this->food[0]->name它来访问它。
Although it looks weird, but it works.
虽然看起来很奇怪，但它确实有效。
Solution 2:
解决方案2：
Why not call Food::find($id)to fetch the object instead of $food = new food($id)
为什么不调用Food::find($id)来获取对象而不是$food = new food($id)
You can learn more by reading this http://laravel.com/docs/eloquent
您可以通过阅读此http://laravel.com/docs/eloquent了解更多信息
