docs/validators/When.md
When(Validator $when, Validator $then)When(Validator $when, 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())->assert(1);
// Validation passes successfully
v::when(v::intVal(), v::positive(), v::notBlank())->assert('non-blank string');
// Validation passes successfully
v::when(v::intVal(), v::positive(), v::notBlank())->assert(-1);
// → -1 must be a positive number
v::when(v::intVal(), v::positive(), v::notBlank())->assert('');
// → "" must not be blank
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
| Placeholder | Description |
|---|---|
subject | The validated input or the custom validator name (if specified). |
| Version | Description |
|---|---|
| 0.8.0 | Allow to use validator without else |
| 0.3.9 | Created |