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

:aspect:`Option path`
    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.
