file_upload_server: file Upload Module Server
In HarryRosen/hrimodules: Harry Rosen Inc Shiny Modules

A file upload can be created to display local machine or hosted directories to share information with the shiny application

file_upload_server(
  input,
  output,
  session,
  label = "Please upload the Excel file",
  accept = c(".xlsx"),
  multiple = F,
  rl = "Input File Module"
)

`input`	list of inputs used in the shiny application session
`output`	list of outputs used the shiny application session
`session`	The shiny app session object
`label`	The label of the file upload UI
`accept`	The file extension to accept
`multiple`	Can multiple items be shared. Default FALSE
`rl`	The reactive label for debugging