Question

我知道如何在laravel模型中使用Soft Deleting功能。像这样：

class Flight extends Model
{
    use SoftDeletes;

    protected $dates = ['deleted_at'];
}

但我希望为该功能使用名为sender_deleted_at的自定义列，其中所有相关方法（如forceDelete，restore，withTrashed等）都基于该列工作。

我写了this Question但我无法得到正确答案。

我使用的是Laravel 5.3。

Answer 1

SoftDeletes特征使用此代码来＆＃34;删除＆＃34;一排：

protected function runSoftDelete() {
        $query = $this->newQueryWithoutScopes()->where($this->getKeyName(), $this->getKey());
        $this->{$this->getDeletedAtColumn()} = $time = $this->freshTimestamp();
        $query->update([$this->getDeletedAtColumn() => $this->fromDateTime($time)]);
}

getDeletedAtColumn()的正文是：

public function getDeletedAtColumn() {
    return defined('static::DELETED_AT') ? static::DELETED_AT : 'deleted_at';
}

因此你可以这样做：

class Flight extends Model
{
    use SoftDeletes;    
    protected $dates = ['my_deleted_at'];
    const DELETED_AT = 'my_deleted_at';
}

Answer 2

简答：只需在模型中声明const DELETED_AT并为其指定要使用的列名。

<?php

namespace App;

use Illuminate\Database\Eloquent\SoftDeletes;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;

class User extends Authenticatable
{
    use SoftDeletes;

    use Notifiable;

    const DELETED_AT = 'deletedAt';
}

说明：如果您查看getDeletedAtColumn中的方法trait Illuminate\Database\Eloquent\SoftDeletes

/**
 * Get the name of the "deleted at" column.
 *
 * @return string
 */
public function getDeletedAtColumn()
{
    return defined('static::DELETED_AT') ? static::DELETED_AT : 'deleted_at';
}

实际上，检查你是否在实现类中声明了一个常量名DELETED_AT而不是获取该值，如果你没有简单地使用deleted_at作为软删除列。

在laravel中使用自定义软删除列

2 个答案: