Download a separate Markdown file report as html

[YShao]

Hello, 

I have a Shiny interface that displays my data. 

In the download function, I would like to download a separate report I've compiled using this data from RMarkdown and knitr. 

My current code for the downloadHander in server.R  is this. 

output$downloadData<- downloadHandler(filename ="ShinyData.html", 

                                      content= function(file){

                                      knit2html("myreport.md", file);

                                      }

  )

This successfully creates a myreport.html file in the directory folder from the md file, but does not do anything on the UI side. Help?

[Yihui Xie]

You should probably mention it was cross-posted here:
http://stackoverflow.com/questions/15907535/rshiny-how-to-pass-variable-from-server-r-to-an-rmd-script

I still have not got a chance to look into it. Hopefully other people
can help you.

Regards,
Yihui
--
Yihui Xie <xiey...@gmail.com>
Phone: 515-294-2465 Web: http://yihui.name
Department of Statistics, Iowa State University
2215 Snedecor Hall, Ames, IA

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[Winston Chang]

It would be very helpful for diagnosing the issue if you could supply a reproducible example app (in a gist, for example).

-Winston

On Mon, Apr 15, 2013 at 9:41 AM, YShao <jayce...@gmail.com> wrote:

[YShao]

https://gist.github.com/Shaoy/5396030

 

I am so frustrated that I am pulling out my hair right now and throwing them out the window, Please help. 

[Winston Chang]

The function that's given as the 'content' argument to downloadHandler takes one option, 'file'. When the download button is clicked, the download handler calls that function, and it uses the file argument to tell it where is should save the output file.

I don't see a way to set the output file name from knit2html(), but you can just rename it after it's created:

  output$downloadData <- downloadHandler(

    filename ="ShinyData.html", 

    content = function(file) {

      knit2html("myreport.rmd")

      file.rename("myreport.html", file)

    }

  )

(Also, you're missing a closing parenthesis in ui.r.)

-Winston

[YShao]

Thank you very much.   

I guess I was confused as to what the content part of the downloadHandler really does. 

[Wei Zhao]

I tried this example but it didn't work on my Shiny server. The error message is  "cannot open the connection"

Wei

On Tuesday, April 16, 2013 11:59:03 AM UTC-4, Winston Chang wrote: