Eloquent模型可以检索其行上的元数据吗?

时间:2014-07-11 14:58:57

标签: laravel-4 eloquent

Laravel中基于Eloquent的模型是否有可能对基础表进行内省/反思并检索有关列的信息(类型,大小,无符号,默认值等)?

或者这是故意遗漏的?

我觉得能够确定列类型(做智能分配一些验证,或帮助推断表单输入类型和/或填充默认值)会很有用。

1 个答案:

答案 0 :(得分:1)

我认为你不能在Laravel中“开箱即用”这样做,尽管实施起来相对容易。沿着这些方向,也许是什么?

<?php

class Model extends Eloquent {

    public function describe()
    {
        $table = $this->getTable();
        $pdo = \DB::connection()->getPdo();
        return $pdo->query("describe $table")->fetchAll();
    }
}

$model = new Model;
$columns = $model->describe();

// $columns:
array (
  0 => 
  array (
    'Field' => 'id',
    0 => 'id',
    'Type' => 'int(10) unsigned',
    1 => 'int(10) unsigned',
    'Null' => 'NO',
    2 => 'NO',
    'Key' => 'PRI',
    3 => 'PRI',
    'Default' => NULL,
    4 => NULL,
    'Extra' => 'auto_increment',
    5 => 'auto_increment',
  ),
  1 => 
  array (
    'Field' => 'created_at',
    0 => 'created_at',
    'Type' => 'timestamp',
    1 => 'timestamp',
    'Null' => 'NO',
    2 => 'NO',
    'Key' => '',
    3 => '',
    'Default' => '0000-00-00 00:00:00',
    4 => '0000-00-00 00:00:00',
    'Extra' => '',
    5 => '',
  ),
  ...