downloadHandler {shiny} | R Documentation |
Allows content from the Shiny application to be made available to the user as
file downloads (for example, downloading the currently visible data as a CSV
file). Both filename and contents can be calculated dynamically at the time
the user initiates the download. Assign the return value to a slot on
output
in your server function, and in the UI use
downloadButton
or downloadLink
to make the
download available.
downloadHandler(filename, content, contentType = NA)
filename |
A string of the filename, including extension, that the user's web browser should default to when downloading the file; or a function that returns such a string. (Reactive values and functions may be used from this function.) |
content |
A function that takes a single argument |
contentType |
A string of the download's
content type, for
example |
## Not run: # In server.R: output$downloadData <- downloadHandler( filename = function() { paste('data-', Sys.Date(), '.csv', sep='') }, content = function(file) { write.csv(data, file) } ) # In ui.R: downloadLink('downloadData', 'Download') ## End(Not run)