Pass a file to download shiny

Improve this question. YBS I really don't care what the filename is at all, this is just an example. The issue is that whatever is placed in the argument filename is not getting passed to downloadHandler.

I can edit the post as per your suggestion but this doesn't change the behaviour. Testing reveals that this is OS dependent and a Mac issue. The above code works fine and as anticipated with Windows and Linux. This may be related to this issue stackoverflow. Add a comment.

Active Oldest Votes. Sign up or log in Sign up using Google. Sign up using Facebook. Selecting rows of data. Interactive plots - advanced. JavaScript actions packaged for Shiny apps. How to build a JavaScript based widget. How to add functionality to JavaScript widgets. How to send messages from the browser to the server and back using Shiny. How to develop an interactive, dynamic help system for your app with introJS.

How to create custom input bindings. Putting everything together to create an interactive dashboard. Using custom CSS in your app. Build custom input objects.

Build custom output objects. Add Google Analytics to a Shiny app. Packaging JavaScript code for Shiny. Communicating with Shiny via JavaScript. Debugging Shiny applications. Write error messages for your UI with validate. Regardless, each box gives users the option to download both the plot and a customized data set containing the plotted data in a csv file. I have individual downloadButtons and an instance of downloadHandler associated with each download. The code for these blocks follows the examples available in the shiny documentation.

I'm not looking forward to maintaining 50 to 60 instances of the downloadHandler to manage all of the downloads. Are there any examples of putting the downloadHandler in a wrapper function? Ideally, I'd like to pass an output parameter, a file name parameter and an output type parameter to the function. This sounds like a good scenario for the use of a module function. I did a blogpost about using modules for this kind of thing recently. Let me know if you have any questions! I think paul 's point towards modules is definitely the right way to go.

Using the pool package basics. Using the pool package advanced. Using dplyr and pool to query a database. Persistent data storage in Shiny apps. Application layout guide. Build a dynamic UI that reacts to user input.

Displaying and customizing static tables. How to use DataTables in a Shiny App. Help users download data from your app. Help users upload files to your app. Interactive plots. Selecting rows of data. Interactive plots - advanced. JavaScript actions packaged for Shiny apps. How to build a JavaScript based widget. How to add functionality to JavaScript widgets.

How to send messages from the browser to the server and back using Shiny. How to develop an interactive, dynamic help system for your app with introJS. How to create custom input bindings. Putting everything together to create an interactive dashboard.