add_server_layer: Add a server layer to a tower
In tower: Easy Middle Ware Library for 'shiny'

add_server_layer

R Documentation

Add a server layer to a tower

Description

Add a server layer to a tower. This layer will run before the 'shiny' app's server function. This is useful for adding custom logic to the server function without modifying the original server function.

Usage

add_server_layer(tower, layer)

Arguments

`tower`	A tower
`layer`	A function that takes input, output, and session and has no return value. This function will be called before the original server function. If you want to short-circuit the server use an exception.