respect-validation/docs/validators/When.md

When

• When(Validator $if, Validator $then)
• When(Validator $if, Validator $then, Validator $else)

A ternary validator that accepts three parameters.

When the $if validates, returns validation for $then. When the $if doesn't validate, returns validation for $else, if defined.

v::when(v::intVal(), v::positive(), v::notBlank())->isValid(1); // true
v::when(v::intVal(), v::positive(), v::notBlank())->isValid('non-blank string'); // true

v::when(v::intVal(), v::positive(), v::notBlank())->isValid(-1); // false
v::when(v::intVal(), v::positive(), v::notBlank())->isValid(''); // false

In the sample above, if $input is an integer, then it must be positive. If $input is not an integer, then it must not be blank. When $else is not defined use AlwaysInvalid

Templates

Template placeholders

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

Categorization

• Conditions
• Nesting

Changelog

Version	Description
0.8.0	Allow to use validator without else
0.3.9	Created

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See also:

• AllOf
• AlwaysInvalid
• AnyOf
• Circuit
• NoneOf
• OneOf