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43 lines
1.1 KiB
Markdown
43 lines
1.1 KiB
Markdown
# When
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- `When(Validatable $if, Validatable $then)`
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- `When(Validatable $if, Validatable $then, Validatable $else)`
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A ternary validator that accepts three parameters.
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When the `$if` validates, returns validation for `$then`.
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When the `$if` doesn't validate, returns validation for `$else`, if defined.
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```php
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v::when(v::intVal(), v::positive(), v::notEmpty())->validate(1); // true
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v::when(v::intVal(), v::positive(), v::notEmpty())->validate('not empty'); // true
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v::when(v::intVal(), v::positive(), v::notEmpty())->validate(-1); // false
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v::when(v::intVal(), v::positive(), v::notEmpty())->validate(''); // false
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```
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In the sample above, if `$input` is an integer, then it must be positive.
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If `$input` is not an integer, then it must not be empty.
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When `$else` is not defined use [AlwaysInvalid](AlwaysInvalid.md)
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## Categorization
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- Conditions
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- Nesting
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## Changelog
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Version | Description
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--------|-------------
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0.8.0 | Allow to use rule without else
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0.3.9 | Created
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***
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See also:
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- [AllOf](AllOf.md)
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- [AlwaysInvalid](AlwaysInvalid.md)
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- [AnyOf](AnyOf.md)
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- [NoneOf](NoneOf.md)
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- [OneOf](OneOf.md)
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