Rating

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.

Usage

Rating(...)

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

updateRating.shinyInput(
  session = shiny::getDefaultReactiveDomain(),
  inputId,
  ...
)

Arguments

...

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

inputId

ID of the component.

value

Starting value.

session

Object passed as the session argument to Shiny server.

Value

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

Details

• 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

Layout

• 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.

Content

• 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.

Examples

library(shiny)
library(shiny.fluent)

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

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"))
}