Blank
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Blank
Validates that a value is blank, defined as equal to a blank string or equal
to null
. To force that a value strictly be equal to null
, see the
Null constraint. To force that a value is not
blank, see NotBlank.
Applies to | property or method |
Options | |
Class | Blank |
Validator | BlankValidator |
Basic Usage
If, for some reason, you wanted to ensure that the firstName
property
of an Author
class were blank, you could do the following:
- YAML
- Annotations
- XML
- PHP
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# src/Acme/BlogBundle/Resources/config/validation.yml
Acme\BlogBundle\Entity\Author:
properties:
firstName:
- Blank: ~