downloadFileButton module UI function

Source: R/downloadFile.R

Creates a custom high-functionality button for file downloads with two states - single download type or multiple-download types. The button image and pop-up menu (if needed) are set accordingly. A tooltip can also be set for the button.

downloadFileButton(id, downloadtypes = c("csv"), hovertext = NULL)

Arguments

id

character id for the object

downloadtypes

vector of values for data download types

hovertext

tooltip hover text

Value

html span with tooltip and either shiny downloadButton in case of single download or shiny actionButton otherwise

Button Features

  • Consistent styling of the button, including a hover tooltip

  • Single or multiple types of downloads

  • Ability to download different data for each type of download

Example

downloadFileUI("mybuttonID1", c("csv", "tsv"), "Click Here") downloadFileUI("mybuttonID2", "csv", "Click to download")

Shiny Usage

Call this function at the place in ui.R where the button should be placed.

It is paired with a call to downloadFile(id, ...) in server.R

Examples

if (interactive()) {
   library(shiny)
   library(periscope2)
   shinyApp(ui = fluidPage(fluidRow(column(width = 6,
     # single download type
     downloadFileButton("object_id1",
                        downloadtypes = c("csv"),
                        hovertext     = "Button 1 Tooltip")),
      column(width = 6,
      # multiple download types
      downloadFileButton("object_id2",
                         downloadtypes = c("csv", "tsv"),
                         hovertext     = "Button 2 Tooltip")))),
     server = function(input, output) {
       # single download type
       downloadFile(id           = "object_id1",
                    logger       = "",
                    filenameroot = "mydownload1",
                    datafxns     = list(csv = reactiveVal(iris)),
                    aspectratio  = 1)
       # multiple download types
       downloadFile(id           = "object_id2",
                    logger       = "",
                    filenameroot = "mydownload2",
                    datafxns     = list(csv = reactiveVal(mtcars),
                    tsv = reactiveVal(mtcars)))
   })
}