The Symfony Validator component provides tens of validators to validate that a given value matches some expected constraints (e.g. not blank, being a valid IP address, being a string shorter than 255 characters, etc.) In Symfony 5.4 we've expanded that list with two new validators/constraints.

CIDR Validator

        Contributed by Sorin Pop 
        in #43593.

This checks that a value is a valid CIDR (Classless Inter-Domain Routing) notation. By default, it validates the CIDR's IP and netmask both for version 4 and 6, with the option of allowing only one type of IP version to be valid. It also supports a minimum and maximum range constraint in which the value of the netmask is valid.

    1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 // src/Entity/RoutingTable.php namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class RoutingTable {

[Assert\Cidr]

protected $cidr;

#[Assert\Cidr(version: 6)]
protected $anotherCidr;

#[Assert\Cidr(netmaskMax: 20, version: 4)]
protected $yetAnotherCidr;

}

CssColor Validator

        Contributed by Mathieu Santostefano 
        in #40168.

CSS colors handling is common in applications like CMS and site builders. Checking that some given value is a valid CSS color (e.g. to allow users customize some themes) is not an easy feat because there are a lot of different ways to define a color in CSS. By default, this new constraint allows all the CSS color formats (RGB, HEX, HSL, named colors, keywords, etc.) but you can restrict the formats allowed:

    1

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 // src/Entity/ThemeColors.php namespace App\Entity;

use Symfony\Component\Validator\Constraints as Assert;

class ThemeColors {

[Assert\CssColor]

protected $bodyBackgroundColor;

#[Assert\CssColor(
    formats: Assert\CssColor::HEX_LONG,
    message: 'The accent color must be a 6-character hexadecimal color.',
)]
protected $accentColor;

#[Assert\CssColor(
    formats: [Assert\CssColor::BASIC_NAMED_COLORS, Assert\CssColor::EXTENDED_NAMED_COLORS],
    message: 'The color '{{ value }}' is not a valid CSS color name.',
)]
protected $headerColor;

}

                Sponsor the Symfony project.

https://symfony.com/blog/new-in-symfony-5-4-new-validation-constraints?utm_source=Symfony%20Blog%20Feed&utm_medium=feed