New in Symfony 4.1: Validator improvements
February 19, 2018 • Published by Javier Eguiluz
Warning: This post is about an unsupported Symfony version. Some of this information may be out of date. Read the most recent Symfony Docs.
Deprecated the checkDNS
option of the URL validator
Contributed by
Roland Franssen
in #25516.
In Symfony 4.1, the checkDNS
option (and its related dnsMessage
option)
of the Url constraint has been deprecated. This option allowed to check
whether the host associated with the given URL existed. It used the
checkdnsrr()
PHP function and it's been deprecated (and removed in Symfony
5.0) because its results are not fully reliable.
No alternative is provided, so if you still want to apply this validation,
create a custom validation and use the checkdnsrr()
PHP function.
Allow to pass custom values to Expression
validator
Contributed by
Gabriel Ostrolucký
in #25504.
In Symfony 4.1, the Expression constraint accepts a new option called
values
to pass arbitrary values and use them in your expressions:
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use Symfony\Component\Validator\Constraints\Expression;
$constraint = new Expression([
'expression' => 'value + custom == 2',
'values' => [
'custom' => 1,
],
]);
Added a canonicalize
option to the Locale validator
Contributed by
Javier Spagnoletti
in #22353.
In Symfony 4.1, the Locale constraint defines a new boolean option called
canonicalize
. If true
, the given locale value is transformed into its
canonical form before validating it.
For example, FR-fr.utf8
is transformed into fr_FR
, UZ-cYRL-uz
is
transformed into uz_Cyrl_UZ
, etc.
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use Symfony\Component\Validator\Constraints as Assert;
class User
{
/** @Assert\Locale(canonicalize = true) */
protected $locale;
}
Added support for validating URLs without protocol
Contributed by
Peter Smeets
in #24308.
The Url constraint defines the protocols
option to configure the
protocols allowed for the URLs (['http', 'https']
by default). In Symfony
4.1 we added a new boolean option called relativeProtocol
. If true
, URLs
without protocol (e.g. //example.com
) are considered valid too:
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use Symfony\Component\Validator\Constraints as Assert;
class Author
{
/** @Assert\Url(relativeProtocol = true) */
protected $bioUrl;
}
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