Expanding text field - 5 UI


Expanding text field definition has been deprecated since Magnolia 6.0. It extends info.magnolia.ui.form.field.definition.TextFieldDefinition of Magnolia 5 UI. There is no corresponding implementation that would extend info.magnolia.ui.field.TextFieldDefinition of Magnolia 6 UI.

This field is provided by the Content Editor module, which is a DX Core module.

ExpandingTextFieldDefinition extends the text field by allowing its height to expand with the increasing amount of text entered until it reaches the value set for the maxRows property. At that point, a scrollbar will appear.

class: info.magnolia.editor.app.field.ExpandingTextFieldDefinition

fieldType: expandingText

The expanding text field is useful in Content editor apps like the Stories app as shown below.

Before selecting the field:

Before selecting the field

After selecting the field:

After selecting the field

With the initial number of rows:

The field with initial number of rows

With the maximum number of rows:

The field with the maximum number of rows

With a scrollbar:

The field with a scrollbar

Expanding text field properties

Simple expanding text field definition:

  fieldType: expandingText
  rows: 2
  maxRows: 5
# label: Author biography
# placeholder: Provide some info about the author ...

Referencing fields shortcut info - 5 UI

See Referencing fields for further information.

Property Description

<field name>

Name of the field.


optional, default is 10

Maximum number of rows to which the field may expand before showing a scrollbar.


optional, default is 1

Number of text rows for the initial state of the field.

This property is defined in TextFieldDefinition.

Common field properties - 5 UI

Property Description

fieldType`or `class


Defines the field type via either a field alias name or a fully-qualified field definition class name. See Field definition: Field types.

To check the correct form of the name, use the Definitions app.



Pre-filled default value displayed in the field. The value can be overwritten by the user. Use alphanumeric characters.

Applied only when creating a new item, not for already existing items.



Help text displayed when the user clicks the help icon. The value can be literal or retrieved from the message bundle with a key. Use alphanumeric characters in literal values. Not applicable to the static field.


optional, default is false

Enables i18n authoring support which allows editors to write foreign-language or regionally targeted content. A two-letter language identifier (en, de, fr etc.) is displayed on controls where i18n is set to true.


optional, default is the message bundle defined in the dialog definition_

Message bundle such as com.example.messages for localized field labels. You can set this property in the parent dialog, form or tab definition. Child fields will inherit the bundle.



Field label displayed to editors. The value can be literal such as Product name or retrieved from the message bundle with a key such as products.product.label. Use alphanumeric characters in literal values.

If you do not provide the property, Magnolia will fall back to a generated i18n key and display the key in the UI.

If you do not want a label at all, define the property and set its value to a blank space such as label: " " in YAML.


optional, default is the name of the field’s parent node_

Name of the node where the value is saved. The name jcrName is reserved. Use alphanumeric characters.



Placeholder text to be displayed when the field is empty. The value is i18n-able.

Applicable to text, link and combobox fields.


optional, default is false

Makes the field uneditable. Adding this property has the same effect as creating a static field.


optional, default is false

Makes the field required (mandatory). An asterisk is displayed next to the field label. See also Checking for null values.


optional, default is This field is required

Error message displayed when required is true and the user saves an empty field. The value can be literal or retrieved from the message bundle with a key such as validation.message.required.



Adds one or more style names to this component. Multiple styles can be specified as a space-separated list of style names such as checkbox disabled. The style name will be rendered as an HTML class name, which can be used in a CSS definition. The class name is added to the field by calling the Vaadin method addStyleName.



Property transformer classes define how field values are stored in the repository. Each field has a default transformer class. You don’t need to define a class unless you want to override the default. The value is a fully-qualified class name.

Complex field definitions may define a different default transformer in their constructor. See Transforming field values for more.


optional, most fields set a default value automatically

JCR property type of the stored value such as String, Boolean, Date or any other supported and defined data type.


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