Date ¶
Validates that a value is a valid date, meaning a string (or an object that can
be cast into a string) that follows a valid YYYY-MM-DD
format.
Applies to | property or method |
Class | Date |
Validator | DateValidator |
Basic Usage ¶
-
Attributes
属性
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YAML
YAML
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XML
XML
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PHP
PHP
1 2 3 4 5 6 7 8 9 10 |
// src/Entity/Author.php
namespace App\Entity;
use Symfony\Component\Validator\Constraints as Assert;
class Author
{
#[Assert\Date]
protected $birthday;
}
|
Note
As with most of the other constraints, null
and empty strings are
considered valid values. This is to allow them to be optional values.
If the value is mandatory, a common solution is to combine this constraint
with NotBlank.
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 is not a valid date.
This message is shown if the underlying data is not a valid date.
You can use the following parameters in this message:
Parameter | Description |
---|---|
{{ 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.