laravel默认主键是id,但有的时候我们建表时可能会需要用到复合主键,那么laravel中使用Eloquent Medel如何定义复合主键呢?直接上代码。
首先在app目录先创建文件 Traits/HasCompositePrimaryKey 内容如下:
// Adjust this to match your model namespace! namespace App\Traits; use Illuminate\Database\Eloquent\Builder; trait HasCompositePrimaryKey { /** * Get the value indicating whether the IDs are incrementing. * * @return bool */ public function getIncrementing() { return false; } /** * Set the keys for a save update query. * * @param \Illuminate\Database\Eloquent\Builder $query * @return \Illuminate\Database\Eloquent\Builder */ protected function setKeysForSaveQuery(Builder $query) { foreach ($this->getKeyName() as $key) { if ($this->$key) $query->where($key, ‘=‘, $this->$key); else throw new Exception(__METHOD__ . ‘Missing part of the primary key: ‘ . $key); } return $query; } }
在model中使用:
<?php namespace App; use Illuminate\Database\Eloquent\Model; class Goods extends Model { use \App\Traits\HasCompositePrimaryKey; protected $primaryKey = [‘param1‘, ‘param2‘]; //设置组合主键 // coding }
这样Eloquent ORM的save()方法就可以使用了。
时间: 2024-10-30 15:35:02