GroupElement | References | ArcGIS Maps SDK for JavaScript

import GroupElement from "@arcgis/core/form/elements/GroupElement.js";

Inheritance:: GroupElement→Element→Accessor

Since: ArcGIS Maps SDK for JavaScript 4.16

A GroupElement form element defines a container that holds a set of form elements that can be expanded, collapsed, or displayed together. Use this to set grouped field configurations within a FeatureForm.formTemplate or FeatureLayer.formTemplate formTemplate.

Form with individual field elements	Form with grouped field elements

Nested group elements are not supported. A group element must be visible if it contains a required field.

See also

Example

const fieldElement1 = new FieldElement({
  fieldName: "inspector",
  label: "Inspector name"
});

const fieldElement2 = new FieldElement({
  fieldName: "inspdate",
  label: "Inspection date",
  description: "Date inspection was handled",
  input: { // autocastable to DateTimePickerInput
    type: "datetime-picker",
      includeTime: true,
      min: 1547678342000,
      max: 1610836742000
    }
});

const fieldElement3 = new FieldElement({
  fieldName: "placename",
  label: "Business name",
  editable: false
});

// Create the group element and pass in elements from above
const groupElement = new GroupElement({
  label: "Business contact information",
  description: "Enter the business contact name",
  elements:[fieldElement1, fieldElement2, fieldElement3]
});

// Next pass in any elements to the FormTemplate
const formTemplate = new FormTemplate({
  title: "Inspector report",
  description: "Enter all relevant information below",
  elements: [groupElement] // Add group element to the template
});

Constructors

Constructor

Parameters

Parameter	Type	Description	Required
properties	`GroupElementProperties`

See the properties table for a list of all the properties that may be passed into the constructor.

Properties

Any properties can be set, retrieved or listened to. See the Watch for changes topic.

Property	Type	Class
`declaredClass` readonly inherited	`string`	Accessor
`description` inherited	`string \| null \| undefined`	Element
`elements`	`NestableFormElementUnion[]`
`initialState`	`GroupState`
`label` inherited	`string \| null \| undefined`	Element
`type` readonly	`"group"`
`visibilityExpression` inherited	`string \| null \| undefined`	Element

declaredClass

readonlyinherited Property

Type: string

Inherited from: Accessor

The name of the class. The declared class name is formatted as esri.folder.className.

description

inherited Property

Type: string | null | undefined

Inherited from: Element

The element's description providing the purpose behind it.

elements

autocast Property

Type: NestableFormElementUnion[]

An array of field, relationship, and text elements to display as grouped. These objects represent an ordered list of form elements.

Nested group elements are not supported.
The AttachmentElement is not yet fully supported by the FeatureForm widget. Support will be added in a future release.

initialState

Property

Type: GroupState

Defines if the group should be expanded or collapsed when the form is initially displayed.

Possible Value	Description
collapsed	The grouped elements appear collapsed.
expanded	The grouped elements appear expanded.

Default value: "expanded"

label

inherited Property

Type: string | null | undefined

Inherited from: Element

A string value containing the field alias. This should not be used for referencing fields in Arcade expressions. Rather, the service FieldElement.fieldName should be referenced.

type

readonly Property

Type: "group"

The type of the Element.

visibilityExpression

inherited Property

Type: string | null | undefined

Inherited from: Element

A reference to the ExpressionInfo.name of an Arcade expression defined in the FormTemplate.expressionInfos of the FormTemplate.

When this expression evaluates to true, the element is displayed. When the expression evaluates to false the element is not displayed. If no expression is provided, the element is always displayed. Care must be taken when defining a visibility expression for a non-nullable field as to make certain the specified field has either 1) a default value, or 2) is made visible to the end user to enter a value before submitting the form.

The expression must follow the specification defined in the Form Calculation Profile. This expression references field values within an individual feature or in other layers and must return either a date, number, or string value. The referenced expression must be defined in the form template's FormTemplate.expressionInfos. It cannot be set inline within the element object. Field and Group elements must be visible if the field or one of the grouped fields is required.

See also

Example

// Expression created within ExpressionInfos and is referenced in element
const expression = new ExpressionInfo({
  name: "alwaysHidden",
  expression: "false"
});

// Reference an already-defined visibilityExpression set within the ExpressionInfos
const fieldElement = new FieldElement({
  type: "field",
  fieldName: "inspemail",
  label: "Email address",
  visibilityExpression: "alwaysHidden"
});

formTemplate.expressionInfos = [ expression ];
formTemplate.elements = [ fieldElement ];

Methods

Method	Signature	Class
`fromJSON` inherited static	`fromJSON(json: any): any`	JSONSupportMixin
`clone`	`clone(): GroupElement`
`toJSON` inherited	`toJSON(): any`	JSONSupportMixin

fromJSON

inheritedstatic Method

Signature: fromJSON (json: any): any

Inherited from: JSONSupportMixin

Creates a new instance of this class and initializes it with values from a JSON object generated from an ArcGIS product. The object passed into the input json parameter often comes from a response to a query operation in the REST API or a toJSON() method from another ArcGIS product. See the Using fromJSON() topic in the Guide for details and examples of when and how to use this function.

Parameters

Parameter	Type	Description	Required
json	`any`	A JSON representation of the instance in the ArcGIS format. See the ArcGIS REST API documentation for examples of the structure of various input JSON objects.

Returns: any
Returns a new instance of this class.

clone

Method

Signature: clone (): GroupElement

Creates a deep clone of the GroupElement class.

Returns: GroupElement
A deep clone of the GroupElement instance.

toJSON

inherited Method

Signature: toJSON (): any

Inherited from: JSONSupportMixin

Converts an instance of this class to its ArcGIS portal JSON representation. See the Using fromJSON() guide topic for more information.

Returns: any
The ArcGIS portal JSON representation of an instance of this class.