This package contains the shiny examples that show how to build apps with ever more complex drill-down capabilities.

devtools::install_github("edgararuiz/drilldowndemo")

Use drilldowndemo_run() to select and run one of the Shiny apps in the package.

library(drilldowndemo)

drilldowndemo_run()

Available apps:
 1-intro
 2-tabs
 3-navigation
 4-details
Enter the app number to select: 

To see the code, use drilldowndemo_open(). It will open the script in RStudio.