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This comment has been minimized. Sign in to view. Copy link Quote reply. The content argument must be a function that takes a single argument, the file name of a non-existent temp file. The content function is responsible for writing the contents of the file download into that temp file. Provide your own content type string e. If you have questions about this article or would like to discuss ideas presented here, please post on RStudio Community.
Our developers monitor these forums and answer questions periodically. See help for more help with all things Shiny.
Shiny from. Help users download data from your app Last Updated: 28 Jun See here for an example app with file downloads. The basic parts of a Shiny app. How to get help. App formats and launching apps. Introduction to R Markdown. Introduction to interactive documents. Setting Output args via Render functions. Generating downloadable reports. Shiny Gadgets. Could you please add code formatting? It just makes the text much more readable, and makes easier for others to help you out! The solution is writing the files with unique names.
What this does is it provides you with a unique filename in the R session's temp space it gets cleaned up after the R session dies. You will also notice that it provides a unique location each time it is fired. Created on by the reprex package v0. Thanks so much for your response! This is helpful. I did think about doing it this way, however what I can't figure out is how to call the temp file to display it.
In the code above, I display the pdf using an iframe. Within that iframe, I have to specify the src , but if I generate a temp file, I don't know what to put in that src reference because I don't know the file name of the temp file. Hopefully that makes sense. However, we recommend passing in params and using a new envir , because it provides better code isolation and makes things easier to debug.
If you have questions about this article or would like to discuss ideas presented here, please post on RStudio Community. Our developers monitor these forums and answer questions periodically. See help for more help with all things Shiny. Shiny from. There are two key parts for this: A downloadHandler which knits the document on demand and passes values to the document.
An R Markdown document which is parameterized. Example This app takes one input value, and passes it as a parameter to an. Rmd" file. Notes The rmarkdown::render function has many options to control the processing and output.
This will require two changes: Change the filename argument of downloadHandler to "report. It will also require pdflatex to be installed on your system. To generate a Microsoft Word document: Change the filename argument of downloadHandler to "report. The basic parts of a Shiny app.
How to get help. App formats and launching apps. Introduction to R Markdown. Introduction to interactive documents. Setting Output args via Render functions. Generating downloadable reports.
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