.. include:: /Includes.rst.txt
validators
----------

:aspect:`Option path`
      TYPO3.CMS.Form.prototypes.<prototypeIdentifier>.formElementsDefinition.Url.validators

:aspect:`Data type`
      array

:aspect:`Needed by`
      Frontend/ Backend (form editor)

:aspect:`Overwritable within form definition`
      Yes

:aspect:`form editor can write this property into the form definition (for prototype 'standard')`
      Yes

:aspect:`Mandatory`
      Yes

:aspect:`Default value (for prototype 'standard')`
      .. code-block:: yaml
         :linenos:
         :emphasize-lines: 2

         Url:
           validators:
             -
               identifier: RegularExpression
               options:
                 regularExpression: '/^.*$/'

.. :aspect:`Good to know`
      ToDo

:aspect:`Description`
      Predefined validators.
