--- title: "[validatorsDefinition]" manual: "Form" version: "14.3" permalink: "https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition@14.3" source: "I/Config/proto/validatorsDefinition/Index.rst" rendered: "2026-09-19T11:59:02+00:00" --- # \[validatorsDefinition\] {#prototypes-prototypeidentifier-validatorsdefinition} ## Properties {#prototypes-prototypeidentifier-validatorsdefinition-properties} ### \[validatorsDefinition\] {#prototypes-prototypeidentifier-validatorsdefinition-properties-validatorsdefinition} - ***Option path*** prototypes.\.validatorsDefinition - ***Data type*** array - ***Needed by*** Frontend/ Backend (form editor) - ***Mandatory*** Yes - ***Default value*** ```yaml prototypes: : validatorsDefinition: [...] ``` - ***Good to know*** - ["Custom validator implementations"](https://docs.typo3.org/permalink/typo3/cms-form:concepts-validators-customvalidatorimplementations@14.3) - ***Description*** Array which defines the available serverside validators. Every key within this array is called the ``. ### \ {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier} - ***Option path*** prototypes.\.validatorsDefinition.\ - ***Data type*** array - ***Needed by*** Frontend/ Backend (form editor) - ***Mandatory*** Yes - ***Default value (for prototype 'standard')*** ```yaml prototypes: standard: NotEmpty: [...] DateTime: [...] Alphanumeric: [...] Text: [...] StringLength: [...] EmailAddress: [...] Integer: [...] Float: [...] NumberRange: [...] RegularExpression: [...] Count: [...] FileSize: [...] ``` - ***Related options*** - ["prototypes.prototypeIdentifier.formElementsDefinition.formelementtypeidentifier.formEditor.propertyCollections.validators.\[\*\].identifier"](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-formelementsdefinition-formelementtypeidentifier-formeditor-propertycollections-validators-identifier@14.3) - ["\[ValidatorsEditor\] selectOptions.\[\*\].value"](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-formelementsdefinition-formelementtypeidentifier-formeditor-editors-selectoptions-value-validatorseditor@14.3) - ["\[RequiredValidatorEditor\] validatorIdentifier"](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-formelementsdefinition-formelementtypeidentifier-formeditor-editors-validatoridentifier-requiredvalidatoreditor@14.3) - ***Good to know*** - ["Custom validator implementations"](https://docs.typo3.org/permalink/typo3/cms-form:concepts-validators-customvalidatorimplementations@14.3) - ***Description*** This array key identifies a validator. This identifier could be used to attach a validator to a form element. ## Common \ properties {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-commonproperties} ### implementationClassName {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-implementationclassname} - ***Option path*** prototypes.\.validatorsDefinition.\.implementationClassName - ***Data type*** string - ***Needed by*** Frontend - ***Mandatory*** Yes - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Good to know*** - ["Custom validator implementations"](https://docs.typo3.org/permalink/typo3/cms-form:concepts-validators-customvalidatorimplementations@14.3) - ***Description*** Classname which implements the validator. ### options {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-options} - ***Option path*** prototypes.\.validatorsDefinition.\.options - ***Data type*** array - ***Needed by*** Frontend/ Backend (form editor) - ***Mandatory*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Good to know*** - ["Custom validator implementations"](https://docs.typo3.org/permalink/typo3/cms-form:concepts-validators-customvalidatorimplementations@14.3) - ***Description*** Array with validator options. ### formEditor {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-formeditor} - ***Option path*** prototypes.\.validatorsDefinition.\.formEditor - ***Data type*** array - ***Needed by*** Backend (form editor) - ***Mandatory*** Recommended - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Description*** Array with configurations for the `form editor` ### formeditor.iconIdentifier {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-formeditor-iconidentifier} - ***Option path*** prototypes.\.validatorsDefinition.\.formEditor.iconIdentifier - ***Data type*** string - ***Needed by*** Backend (form editor) - ***Mandatory*** Yes - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Description*** An icon identifier which must be registered through the `\TYPO3\CMS\Core\Imaging\IconRegistry`. This icon will be shown within the - ["Inspector \[CollectionElementHeaderEditor\]"](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-formelementsdefinition-formelementtypeidentifier-formeditor-editors-collectionelementheadereditor@14.3) if the validator is selected. ### formeditor.label {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-formeditor-label} - ***Option path*** prototypes.\.validatorsDefinition.\.formEditor.label - ***Data type*** string - ***Needed by*** Backend (form editor) - ***Mandatory*** Yes - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Good to know*** - ["Translate form editor settings"](https://docs.typo3.org/permalink/typo3/cms-form:concepts-formeditor-translation-formeditor@14.3) - ***Description*** This label will be shown within the - ["Inspector \[CollectionElementHeaderEditor\]"](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-formelementsdefinition-formelementtypeidentifier-formeditor-editors-collectionelementheadereditor@14.3) if the validator is selected. ### formeditor.predefinedDefaults {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-formeditor-predefineddefaults} - ***Option path*** prototypes.\.validatorsDefinition.\.formEditor.predefinedDefaults - ***Data type*** array - ***Needed by*** Backend (form editor) - ***Mandatory*** No - ***Default value*** Depends (see [concrete validators configuration](https://docs.typo3.org/permalink/typo3/cms-form:prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations@14.3)) - ***Description*** Defines predefined defaults for validator options which are prefilled, if the validator is added to a form element. ## Concrete configurations {#prototypes-prototypeidentifier-validatorsdefinition-validatoridentifier-concreteconfigurations} - [[Alphanumeric]](https://docs.typo3.org/permalink/typo3/cms-form:alphanumeric@14.3) - [[Count]](https://docs.typo3.org/permalink/typo3/cms-form:count@14.3) - [[DateRange]](https://docs.typo3.org/permalink/typo3/cms-form:daterange@14.3) - [[DateTime]](https://docs.typo3.org/permalink/typo3/cms-form:datetime@14.3) - [[EmailAddress]](https://docs.typo3.org/permalink/typo3/cms-form:emailaddress@14.3) - [[FileSize]](https://docs.typo3.org/permalink/typo3/cms-form:filesize@14.3) - [[Float]](https://docs.typo3.org/permalink/typo3/cms-form:float@14.3) - [[Integer]](https://docs.typo3.org/permalink/typo3/cms-form:integer@14.3) - [[NotEmpty]](https://docs.typo3.org/permalink/typo3/cms-form:notempty@14.3) - [[Number]](https://docs.typo3.org/permalink/typo3/cms-form:number@14.3) - [[NumberRange]](https://docs.typo3.org/permalink/typo3/cms-form:numberrange@14.3) - [[RegularExpression]](https://docs.typo3.org/permalink/typo3/cms-form:regularexpression@14.3) - [[StringLength]](https://docs.typo3.org/permalink/typo3/cms-form:stringlength@14.3) - [[Text]](https://docs.typo3.org/permalink/typo3/cms-form:text@14.3)