Only create a server module /function without the UI part in R Shiny

[pascal28]

Is it possible to create a Shiny module/function without the UI part? I only want to create the server part as there is no UI that corresponds to my server function. I only see documentation with UI and Server together. It would be great if you can point me to documentation with only server functions/modules and how to implement them in a Shiny app. Thank you!

[andresrcs]

If you don't need a UI then a Plumber API would be a better fit.

An API Generator for R

[pascal28]

Thanks for the resource. I meant that the part of my Shiny server does not need a UI part that I want to modularize/turn into a function. Certain parts of the app need UI parts.

Anyway, as I was typing out my question I was able to formulate my question better and refined my search. That post on SO was helpful: https://stackoverflow.com/questions/46849786/how-to-define-a-function-that-calls-shiny-functions

Also, it is a bit confusing using object()$element_in_list for functions versus object$element_in_list() when using modules when using the returns in other reactive parts (just a side note)

[andresrcs]

You would get better answers if you provide a reproducible example (reprex) illustrating your issue? Please have a look at these resources, to see how to create one for a shiny app

Chapter 5 Workflow | Mastering Shiny

Shiny debugging and reprex guide

Shiny issues can be challenging to resolve relative to other problems with your code or statistical methods. Shiny apps are often large, complex projects with interacting files. When seeking help from others it is considered polite to: First, do your best to work through RStudio's debugging tools to diagnose your issue on your own. Often those shiny logs and tracebacks are useful to others trying to help out. Second, strive to minimize the effort required to replicate your issue. You can do this with a reproducible example ("reprex"). Shiny Debugging Errors in Shiny code can be difficult to track down. If you don't know where your problem is coming from, you can track it down with some o…