Get upload directory for fancyDirectoryInput

Retrieve the upload directory path for a fancyDirectoryInput. The upload directory is generated based on the session token and input ID, and files uploaded to the input preserve their relative directory structure within this directory.

Usage

get_dipsaus_upload_dir(inputId, session = shiny::getDefaultReactiveDomain())

Arguments

inputId

the input ID (relative to the session, whose namespace will be automatically applied via session$ns(inputId))

session

the Shiny session object (default: shiny::getDefaultReactiveDomain())

Value

Character string with the upload directory path, or NULL if the input has no uploaded files yet. The directory path follows the pattern tempdir()/dipsaus_uploads/{6-char-hash}/ where the hash is derived from digest(session_token + full_inputId).

Details

This function is useful for:

• Manually cleaning up uploaded files via unlink(get_dipsaus_upload_dir(inputId), recursive = TRUE)

• Processing files with their preserved directory structure

• Accessing the upload directory for custom file operations

The upload directory is deterministic for a given session and input ID, meaning multiple uploads to the same input will use the same directory (unless autoCleanup = TRUE is set, which clears the directory before each new upload).

In Shiny modules, use the relative inputId (e.g., "dir_input") rather than the full ID (with namespace applied). The function will automatically handle namespace conversion via session$ns(inputId).

Examples

if (FALSE) { # \dontrun{
server <- function(input, output, session) {
  observeEvent(input$dir_input, {
    files <- input$dir_input

    if(!is.null(files) && attr(files, "upload_status") == "completed") {
      # Get the upload directory
      upload_dir <- get_dipsaus_upload_dir("dir_input")
      cat("Files are stored in:", upload_dir, "\n")

      # Process files...

      # Clean up when done
      unlink(upload_dir, recursive = TRUE, force = TRUE)
    }
  })
}
} # }