respect-validation/docs/validators/Not.md
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# Not
- `Not(Validator $validator)`
Negates any validator.
```php
v::not(v::ip())->assert('foo');
// Validation passes successfully
```
In the sample above, validator returns true because 'foo' isn't an IP Address.
You can negate complex, grouped or chained validators as well:
```php
v::not(v::intVal()->positive())->assert(-1.5);
// Validation passes successfully
```
Each other validation has custom messages for negated validators.
## Templates
## Template placeholders
| Placeholder | Description |
| ----------- | ---------------------------------------------------------------- |
| `subject` | The validated input or the custom validator name (if specified). |
## Categorization
- Core
- Conditions
- Nesting
## Changelog
| Version | Description |
| ------: | :---------- |
| 0.3.9 | Created |
## See Also
- [Named](Named.md)
- [NoneOf](NoneOf.md)
- [Templated](Templated.md)