The radio field.


TitleRadio Group Field
DescriptionRadio Group Field with list of options.
Field Typeradio
Base Field TypeNone


defaultanyThe default value to be assigned for this property. If the data for the field is empty or not provided, this default value will be plugged in for you. Specify a default value when you want to pre-populate the field's value ahead of time.
dependenciesarrayList of property dependencies.
descriptionstringDetailed description of the property.
disallowarrayList of disallowed values for the property.
enumarrayList of field value options
formatstringData format of the property.
readonlybooleanIndicates that the field is read-only. A read-only field cannot have it's value changed. Read-only fields render in a grayed-out or disabled control. If the field is rendered using a view with the displayReadonly attribute set to false, the read-only field will not appear.
requiredbooleanIndicates whether the field's value is required. If set to true, the field must take on a valid value and cannnot be left empty or unassigned.
titlestringShort description of the property.
typestringData type of the property.


dataSourcestringDatasource for generating list of options. This can be a string or a function. If a string, it is considered to be a URI to a service that produces a object containing key/value pairs or an array of elements of structure {'text': '', 'value': ''}. This can also be a function that is called to produce the same list.
disabledbooleanField will be disabled if true.
emptySelectFirstbooleanIf the data is empty, then automatically select the first item in the list.
fieldClassstringSpecifies one or more CSS classes that should be applied to the dom element for this field once it is rendered. Supports a single value, comma-delimited values, space-delimited values or values passed in as an array.
focuscheckboxtrueIf true, the initial focus for the form will be set to the first child element (usually the first field in the form). If a field name or path is provided, then the specified child field will receive focus. For example, you might set focus to 'name' (selecting the 'name' field) or you might set it to 'client/name' which picks the 'name' field on the 'client' object.
formobjectOptions for rendering the FORM tag.
helperstringField help message.
helpersarrayAn array of field help messages. Each message will be displayed on it's own line.
hiddenbooleanField will be hidden if true.
hideInitValidationErrorbooleanHide initial validation errors if true.
hideNonebooleanWhether to hide the None option from a list (select, radio or otherwise). This will be true if the field is required and false otherwise.
idstringUnique field id. Auto-generated if not provided.
labelstringField label.
namestringField name.
noneLabelstringNoneThe label to use for the 'None' option in a list (select, radio or otherwise).
optionLabelsarrayAn array of string labels for items in the enum array
readonlybooleanField will be readonly if true.
removeDefaultNonebooleanIf true, the default 'None' option will not be shown.
showMessagesbooleantrueDisplay validation messages if true.
sortfunctionDefines an f(a,b) sort function for the array of enumerated values [{text, value}]. This is used to sort enum and optionLabels as well as results that come back from any data sources (for select and radio controls). By default the items are sorted alphabetically. Don't apply any sorting if false.
typestringradioField type.
useDataSourceAsEnumbooleantrueWhether to constrain the field's schema enum property to the values that come back from the data source.
validatebooleantrueField validation is required if true.
verticalbooleantrueBy default, radio controls are stacked vertically. Set to false if you'd like radio controls to lay out horizontally.
viewstringAllows for this field to be rendered with a different view (such as 'display' or 'create')

Example 1

Radio button field with data, options and schema parameters. As default, radio group field will be rendered if schema enum properties has 3 or less options.

Example 2

Required radio button field with option labels.

Example 3

Radio button field with more than 3 options and custom option labels.

Example 4

Radio button in display-only mode.

Example 5

A radio field that uses the removeDefaultNone option to remove the option for the end user to select None from the list of available options. In addition, the vertical option is specified to inform the field to render vertically.

Note that if the property that the field describes is required for data integrity to be maintained, consider setting the property schema's required setting to true. This produces the same effect and also allows your data to validate appropriately.

Example 6

A radio field with disabled values.

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