看看Laravel文档,API文档和源代码我想知道是否有人知道下面的唯一规则中的第四个参数id
是针对什么的?Laravel验证:独特的规则第四参数
'email' => 'unique:users,email_address,NULL,id,account_id,1'
我目前的这条规则的理解是:
users
- 寻找此表email_address
- 检查对本栏目NULL
- 将在那里我们可以指定一个主键/ ID值忽略,但我们没有打扰,所以这个参数基本上被忽略id
- 不确定account_id
- 额外的where子句中,这是列名1
- 在account_id
值where子句
文档:http://laravel.com/docs/4.2/validation
功能负责执行的唯一规则验证发现在\Illuminate\Validation\Validator
功能validateUnique($attribute, $value, $parameters)
在线949
:
/**
* Validate the uniqueness of an attribute value on a given database table.
*
* If a database column is not specified, the attribute will be used.
*
* @param string $attribute
* @param mixed $value
* @param array $parameters
* @return bool
*/
protected function validateUnique($attribute, $value, $parameters)
{
$this->requireParameterCount(1, $parameters, 'unique');
$table = $parameters[0];
// The second parameter position holds the name of the column that needs to
// be verified as unique. If this parameter isn't specified we will just
// assume that this column to be verified shares the attribute's name.
$column = isset($parameters[1]) ? $parameters[1] : $attribute;
list($idColumn, $id) = array(null, null);
if (isset($parameters[2]))
{
list($idColumn, $id) = $this->getUniqueIds($parameters);
if (strtolower($id) == 'null') $id = null;
}
// The presence verifier is responsible for counting rows within this store
// mechanism which might be a relational database or any other permanent
// data store like Redis, etc. We will use it to determine uniqueness.
$verifier = $this->getPresenceVerifier();
$extra = $this->getUniqueExtra($parameters);
return $verifier->getCount(
$table, $column, $value, $id, $idColumn, $extra
) == 0;
}
干杯