respect-validation/docs/validators/NullOr.md

NullOr

• NullOr(Validator $validator)

Validates the input using a defined validator when the input is not null.

Usage

v::nullable(v::email())->isValid(null); // true
v::nullable(v::email())->isValid('example@example.com'); // true
v::nullable(v::email())->isValid('not an email'); // false

Prefix

For convenience, you can use nullOr as a prefix to any validator:

v::nullOrEmail()->isValid('not an email'); // false
v::nullOrBetween(1, 3)->isValid(2); // true
v::nullOrBetween(1, 3)->isValid(null); // true

Templates

NullOr::TEMPLATE_STANDARD

Mode	Template
default	or must be null
inverted	and must not be null

The templates from this validator serve as message suffixes:

v::nullOr(v::alpha())->assert('has1number');
// "has1number" must contain only letters (a-z) or must be null

v::not(v::nullOr(v::alpha()))->assert("alpha");
// "alpha" must not contain letters (a-z) and must not be null

Template placeholders

Placeholder	Description
subject	The validated input or the custom validator name (if specified).

Categorization

• Nesting

Changelog

Version	Description
3.0.0	Renamed to NullOr
2.0.0	Created as Nullable

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See also:

• Attributes
• NullType
• UndefOr