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📖 US Forms System Documentation ➡️ Building a Form

Available widgets

Widgets are React components that return specific HTML form elements. Set these widgets in a config file while building your form.

Some widgets are associated with particular schema types or formats. There are additional widgets available, but the us-forms-system uses definitions they're included in, rather than just the field.

Widgets from the react-jsonschema-form library include string mappings. Widgets created specifically for US Forms System do not have mappings, and therefore must be specified by passing the component for the widget directly to the config. To include such widgets, import the widget at the top of the file:

import CurrencyWidget from 'us-forms-system/lib/js/widgets/CurrencyWidget';

Then, set the ui:widget field to the imported widget name:

uiSchema: {
  ...
  'ui:widget': CurrencyWidget,
  ...
}

Available widgets are:

ArrayCountWidget

Renders a <input type="number"> HTML element, and is used when determining how many times a group of questions should be rendered. For more information about grouping common questions, see "Sequential duplicate form groups."

  • File: ArrayCountWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': ArrayCountWidget for the given field.

CheckboxWidget

Renders a single <input type="checkbox"> HTML element. For information about rendering multiple checkboxes together, see "Checkbox Group."

  • File: CheckboxWidget.jsx
  • Usage: Usually the CheckboxWidget is not specified directly in the uiSchema because it renders by default for a schema that specifies type: 'boolean'.

CurrencyWidget

Renders a <input> HTML element with some additional logic to handle parsing currency inputs.

  • File: CurrencyWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': CurrencyWidget for the given field.

DateWidget

Renders three separate fields for dates, two <select> elements for month and day and one <input> element for the year.

  • File: DateWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': 'date' for the given field.

EmailWidget

Renders a TextWidget with the type: "email" passed to the <input> element.

  • File: EmailWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': 'email' for the given field.

PhoneNumberWidget

Renders a TextWidget with additional logic to strip non-numeric characters from the input before saving the input.

  • File: PhoneNumberWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': PhoneNumberWidget for the given field.

RadioWidget

Renders a single radio button for each enum value. This overrides the default SelectWidget that is normally rendered where enum exists.

  • File: RadioWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': 'radio' for the given field. Usually used with 'ui:options': { labels: {}} so you can specify the label for each radio button. To see a code example, refer to radio button group in form features.

SelectWidget

Renders a <select> HTML element. This is the default widget for data of type: 'string' with an enum property.

  • File: SelectWidget.jsx
  • Usage: Usually the SelectWidget is not specified directly in the uiSchema because it renders by default for a schema that specifies type: 'string' with an enum property.

SSNWidget

Renders a TextWidget with additional logic to strip the dashes before saving the input.

  • File: SSNWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': SSNWidget for the given field.

TextWidget

Renders a <input> HTML element, and is the default widget for data of type: 'string'.

  • File: TextWidget.jsx
  • Usage: Usually the TextWidget is not specified directly in the uiSchema because it renders by default for a schema that specifies type: 'string'.

YesNoWidget

Renders two radio buttons, one with a value of "Yes" and one with a value of "No".

  • File: YesNoWidget.jsx
  • Usage: In the uiSchema, specify 'ui:widget': 'yesNo' for the given field.

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