[英]Laravel 5.3 $appends not working
Below is the code for model 下面是模型的代码
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
protected $appends = [
"desc"
];
protected $fillable = ['id'];
public function getDescAttribute()
{
return strip_tags( $this->attributes['description'] );
}
}
So now when i do 所以现在当我这样做
$product = Product::first();
It doesn't return desc field in the $product, though when i do $product->desc it returns the result, but i want that result to be appended in the model itself. 它不返回$ product中的desc字段,但是当我执行$ product-> desc时它会返回结果,但我希望将结果附加到模型本身中。
The following code gives me error 以下代码给出了错误
$product = Product::first()->get(['desc']);
It runs 它运行
Select desc from products...
But as the desc is not there i am getting error. 但由于desc不在那里我得到错误。
Is anything I'm doing wrong? 我做错了什么吗?
Fields that you add to $appends array are only appended when object is serialized to array/JSON . 只有在将对象序列化为array / JSON时,才会附加添加到$ appends数组的字段。 Otherwise it doesn't make sense to define this attribute until it's really needed - that's why you're getting the value when you access $product->desc .
否则,在真正需要之前定义此属性是没有意义的 - 这就是您在访问$ product-> desc时获取值的原因。 It's done to save unnecessary operations - calculating the value of a custom attribute could involve some heavy operations and is delayed till it's really needed.
这样做是为了节省不必要的操作 - 计算自定义属性的值可能涉及一些繁重的操作,并且会延迟到真正需要的时候。
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