Type ¶
Validates that a value is of a specific data type. For example, if a variable
should be an array, you can use this constraint with the array
type
option to validate this.
Applies to | property or method |
Class | Type |
Validator | TypeValidator |
Basic Usage ¶
This will check if emailAddress
is an instance of Symfony\Component\Mime\Address
,
firstName
is of type string
(using is_string PHP function),
age
is an integer
(using is_int PHP function) and
accessCode
contains either only letters or only digits (using
ctype_alpha and ctype_digit PHP functions).
-
Attributes
属性
-
YAML
YAML
-
XML
XML
-
PHP
PHP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 |
// src/Entity/Author.php
namespace App\Entity;
use Symfony\Component\Mime\Address;
use Symfony\Component\Validator\Constraints as Assert;
class Author
{
#[Assert\Type(Address::class)]
protected $emailAddress;
#[Assert\Type('string')]
protected $firstName;
#[Assert\Type(
type: 'integer',
message: 'The value {{ value }} is not a valid {{ type }}.',
)]
protected $age;
#[Assert\Type(type: ['alpha', 'digit'])]
protected $accessCode;
}
|
Note
As with most of the other constraints, null
is
considered a valid value. This is to allow the use of optional values.
If the value is mandatory, a common solution is to combine this constraint
with NotNull.
Options ¶
groups
¶
type: array
| string
It defines the validation group or groups of this constraint. Read more about validation groups.
message
¶
type: string
default: This value should be of type {{ type }}.
The message if the underlying data is not of the given type.
You can use the following parameters in this message:
Parameter | Description |
---|---|
{{ type }} |
The expected type |
{{ value }} |
The current (invalid) value |
{{ label }} |
Corresponding form field label |
payload
¶
type: mixed
default: null
This option can be used to attach arbitrary domain-specific data to a constraint. The configured payload is not used by the Validator component, but its processing is completely up to you.
For example, you may want to use several error levels to present failed constraints differently in the front-end depending on the severity of the error.
type
¶
type: string
or array
[default option]
This required option defines the type or collection of types allowed for the
given value. Each type is either the FQCN (fully qualified class name) of some
PHP class/interface or a valid PHP datatype (checked by PHP's is_()
functions):
- array配列
- boolブール
- callable呼び出し可能
- float浮く
- doubleダブル
- int整数
- integer整数
- iterable反復可能
- long長いです
- nullヌル
- numeric数値
- object物体
- real本物
- resource資源
- scalarスカラー
- stringストリング
Also, you can use ctype_*()
functions from corresponding
built-in PHP extension. Consider a list of ctype functions:
- alnumアルナム
- alphaアルファ
- cntrlコントロール
- digit桁
- graphグラフ
- lower低い
- print印刷する
- punct点
- spaceスペース
- upperアッパー
- xdigitx桁
Make sure that the proper locale is set before using one of these.