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Ratings show people’s opinions of a product, helping others make more informed purchasing decisions. People can also rate products they’ve purchased.

For more details and examples visit the official docs. The R package cannot handle each and every case, so for advanced use cases you need to work using the original docs to achieve the desired result.



Rating.shinyInput(inputId, ..., value = defaultValue)

  session = shiny::getDefaultReactiveDomain(),



Props to pass to the component. The allowed props are listed below in the Details section.


ID of the component.


Starting value.


Object passed as the session argument to Shiny server.


Object with shiny.tag class suitable for use in the UI of a Shiny app. The update functions return nothing (called for side effects).


  • allowZeroStars boolean
    Allow the rating value to be set to 0 instead of a minimum of 1.

  • ariaLabelFormat string
    Optional label format for a rating star that will be read by screen readers. Can be used like "{0} of {1} stars selected", where {0} will be substituted by the current rating and {1} will be substituted by the max rating.

  • ariaLabelId string
    Deprecated: Optional id of label describing this instance of Rating.

  • componentRef IRefObject<IRating>
    Optional callback to access the IRating interface. Use this instead of ref for accessing the public methods and properties of the component.

  • getAriaLabel (rating: number, max: number) => string

  • icon string
    Custom icon

  • max number
    Maximum rating, defaults to 5, has to be \>= min

  • min number
    Minimum rating, defaults to 1, has to be \>= 0

  • onChange (event: React.FocusEvent<HTMLElement>, rating?: number) => void
    Callback issued when the rating changes.

  • onChanged (rating: number) => void

  • rating number
    Selected rating, has to be an integer between min and max

  • readOnly boolean
    Optional flag to mark rating control as readOnly

  • size RatingSize
    Size of rating, defaults to small

  • styles IStyleFunctionOrObject<IRatingStyleProps, IRatingStyles>
    Call to provide customized styling that will layer on top of the variant rules.

  • theme ITheme
    Theme (provided through customization.)

  • unselectedIcon string
    Custom icon for unselected rating elements.

Best practices


  • Make it clear which item the rating pertains to by making sure the layout and grouping are clear when several items are on the page.

  • Don't use the rating component for data that has a continuous range, such as the brightness of a photo. Instead, use a slider.


  • Use a five-star rating system.

  • Use sentence-style capitalization—only capitalize the first word. For more info, see Capitalization in the Microsoft Writing Style Guide.



ui <- function(id) {
  ns <- NS(id)
    Rating.shinyInput(ns("rating"), value = 2),

server <- function(id) {
  moduleServer(id, function(input, output, session) {
    output$ratingValue <- renderText({
      sprintf("Value: %s", input$rating)

if (interactive()) {
  shinyApp(ui("app"), function(input, output) server("app"))