问题描述
我的数据透视表上有一个模型更改器,如下所示:
I have a model mutator on my pivot table like so:
当我这样保存时:
$account_transaction->subcategories()->attach($water_subcategory->id, ['amount'=>56]);
数据库显示56,而不是5600.
The database shows 56, instead of 5600.
<?php
namespace App\Models;
use Illuminate\Database\Eloquent\Model;
class SubcategoryTransaction extends Model
{
protected $table = 'subcategory_transaction';
protected $fillable = ['amount'];
public function getAmountAttribute($value)
{
if ($value) {
$value = $value / 100;
return $value;
}
return null;
}
public function setAmountAttribute($value)
{
$value = $value * 100;
dd($value);
$this->attributes['amount'] = $value;
}
}
我能够使用一种在附加之前调用金额的方法来创建特征.
I was able to create a Trait with a method that gets called on the amount before attaching.
现在,当我像这样检索这些数据时:
Now when I retrieve these data like this:
return $this_month_transactions = AccountTransaction::where('account_id', $account_id)
->whereBetween('date', [ $first_of_month_date->format('Y-m-d'), $last_of_month_date->format('Y-m-d'), ])
->with('entity','subcategories')
->get();
我需要对每个金额进行一轮($ value/100,2):
I need to run the round($value/100,2) on each amount:
"subcategories": [ { "id": 61, "once_monthly": 1, "transaction_category_id": 10, "name": "Rent & mortgage", "slug": "rent-mortgage", "type": "expense", "created_at": "2018-08-16 05:44:53", "updated_at": "2018-08-16 05:44:53", "pivot": { "transaction_id": 1, "subcategory_id": 61, "created_at": "2018-08-16 05:44:54", "updated_at": "2018-08-16 05:44:54", "amount": 72500 }
}
"subcategories": [ { "id": 61, "once_monthly": 1, "transaction_category_id": 10, "name": "Rent & mortgage", "slug": "rent-mortgage", "type": "expense", "created_at": "2018-08-16 05:44:53", "updated_at": "2018-08-16 05:44:53", "pivot": { "transaction_id": 1, "subcategory_id": 61, "created_at": "2018-08-16 05:44:54", "updated_at": "2018-08-16 05:44:54", "amount": 72500 }
}
我需要72500才能变成725.00
I need 72500 to become 725.00
推荐答案
只要您使用的是Laravel> = 5.5,就可以将访问器和变异器添加到数据透视模型中.
As long as you're using Laravel >=5.5 you can add accessor and mutators to a pivot model.
首先,更改您的SubcategoryTransaction
类以扩展Pivot
类而不是Model
,因此您应该以类似以下内容结束
Firstly, change your SubcategoryTransaction
class to extend the Pivot
class instead of the Model
so you should end up with something like:
use Illuminate\Database\Eloquent\Relations\Pivot;
class SubcategoryTransaction extends Pivot {
/**
* Convert the amount from pence to pounds.
*
* @param $amount
* @return float|int
*/
public function getAmountAttribute($amount)
{
return $amount / 100;
}
/**
* Set the amount attribute to pence.
*
* @param $amount
*/
public function setAmountAttribute($amount)
{
$this->attributes['amount'] = $amount * 100;
}
}
然后在您的belongsToMany
关系中链接另一个名为using()
的方法,将其传递给您的数据透视模型名称,例如:
Then in your belongsToMany
relationships chain another method on called using()
passing it the name of your pivot model e.g.:
public function subcategories()
{
return $this->belongsToMany(Subcategory::class)
->using(SubcategoryTransaction::class) // <-- this line
->withTimestamps()
->withPivot('amount');
}
这篇关于使用附件保存到数据透视表时,Laravel模型更改器不起作用的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!