我正在对用户编辑表单进行验证,并验证用户名是否在数据库中是唯一的。
但是,当编辑用户并且您没有更改用户名字段时,它仍在检查该字段是否唯一...
如果没有更改,是否有忽略当前用户名的laravel方法?
答案 0 :(得分:28)
应该更多地阅读文档,当然laravel 4会这样做......
$rules = array('username' => 'required|unique:users');
$rules = array('username' => 'required|unique:users,username,'.$id);
您可以告诉验证者忽略上面给定的ID。
答案 1 :(得分:9)
这个解决方案对我有用:
protected $rules = array(
'email' => "required|email|unique:users,email,:id",
);
答案 2 :(得分:1)
对于Laravel 4.1,如果扩展Illuminate\Validation\Validator
类,请覆盖validateUnique()
方法:
/**
* 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] : $attribute;
// If the specified ID column is present in the data, use those values; otherwise,
// fall back on supplied parameters.
list($idColumn, $id) = [null, null];
if (isset($parameters[2])) {
list($idColumn, $id) = $this->getUniqueIds($parameters);
if (strtolower($id) == 'null') $id = null;
else if (strtolower($id) == 'id' && isset($this->data[$idColumn])) $id = $this->data[$idColumn];
}
else if (isset($this->data['id'])) {
$idColumn = 'id';
$id = $this->data[$idColumn];
}
// 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;
}
在您的验证器规则中,您可以执行此操作(将检查验证数据中存在的id
字段 - 这是最通用的用法):
$rules = 'unique:model,field';
this(将检查验证数据中存在的id
字段)(相当于上述内容):
// specifying anything other than 'id' or 'null' as the 3rd parameter
// will still use the current behavior
$rules = 'unique:model,field,id';
或此(将检查验证数据中存在的idColumn
字段):
// specifying anything other than 'id' or 'null' as the 3rd parameter
// will still use the current behavior
$rules = 'unique:model,field,id,idColumn';
答案 3 :(得分:0)
您好,您可以将验证器用作服务或复制逻辑并应用您的需要,如此
$valitator = MyCustomValidator::make()->on('update')->setCurrent($id);
登记入住: https://github.com/bradleySuira/laravel-context-validator/blob/master/examples/unique-on-update.php