CODEWITHSUNDEEP
rlinuxuser-interfacedownloadshiny
patrick
patrick

Reputation: 4862

How do I get the R Shiny downloadHandler filename to work?

I am setting up a Shiny app that allows the user to download a custom dataset. Following the tutorial, I set up the downloadHandler following the example given in the docs (reproduced here, since the same thing happens if I copy and paste this). 

ui <- fluidPage(
  downloadLink("downloadData", "Download")
)

server <- function(input, output) {
  # Our dataset
  data <- mtcars

  output$downloadData <- downloadHandler(
    filename = function() {
      paste("data-", Sys.Date(), ".csv", sep="")
    },
    content = function(file) {
      write.csv(data, file)
    }
  )
}

shinyApp(ui, server)

Problem:

This issue only comes up on my Linux* system and seems to work just fine on a Mac. The download and everything works just fine, but the "Save" GUI does not offer me the right file name. There is no error message or warning. Based on my input,

enter image description here

Question:

Thanks!

I'm running elementary OS 0.4 Loki, Built on "Ubuntu 16.04.2 LTS", GTK version: 3.18.9. & RStudio 1.0.143

Upvotes: 11

Views: 4178

Answers (1)

Alexander Leow
Alexander Leow

Reputation: 466

If you are using the Rstudio Browser to test you App this could be the problem. I have the same issue on Windows.

When I use the Rstudio Browser the filename is not properly hand over, but if I use Firefox everything works fine. Your code works also fine in my Firefox.

Upvotes: 11

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