boom_shinyApp {boomer}

boom the reactive calls of a shiny app

Description

These works just like shiny::shinyApp and shiny::runApp and have the exact same parameters, except they create/run a modified app that allows for easier debugging.

Usage

boom_shinyApp(
  ui,
  server,
  onStart = NULL,
  options = list(),
  uiPattern = "/",
  enableBookmarking = NULL
)

boom_runApp(
  appDir = getwd(),
  port = getOption("shiny.port"),
  launch.browser = getOption("shiny.launch.browser", interactive()),
  host = getOption("shiny.host", "127.0.0.1"),
  workerId = "",
  quiet = FALSE,
  display.mode = c("auto", "normal", "showcase"),
  test.mode = getOption("shiny.testmode", FALSE)
)

Arguments

ui

The UI definition of the app (for example, a call to fluidPage() with nested controls).

If bookmarking is enabled (see enableBookmarking), this must be a single argument function that returns the UI definition.

server

A function with three parameters: input, output, and session. The function is called once for each session ensuring that each app is independent.

onStart

A function that will be called before the app is actually run. This is only needed for shinyAppObj, since in the shinyAppDir case, a global.R file can be used for this purpose.

options

Named options that should be passed to the runApp call (these can be any of the following: "port", "launch.browser", "host", "quiet", "display.mode" and "test.mode"). You can also specify width and height parameters which provide a hint to the embedding environment about the ideal height/width for the app.

uiPattern

A regular expression that will be applied to each GET request to determine whether the ui should be used to handle the request. Note that the entire request path must match the regular expression in order for the match to be considered successful.

enableBookmarking

Can be one of "url", "server", or "disable". The default value, NULL, will respect the setting from any previous calls to enableBookmarking(). See enableBookmarking() for more information on bookmarking your app.

appDir

Path to directory that contains a Shiny app (i.e. a server.R file and either ui.R or www/index.html)

port

The TCP port that the application should listen on. If the port is not specified, and the shiny.port option is set (with options(shiny.port = XX)), then that port will be used. Otherwise, use a random port between 3000:8000, excluding ports that are blocked by Google Chrome for being considered unsafe: 3659, 4045, 5060, 5061, 6000, 6566, 6665:6669 and 6697. Up to twenty random ports will be tried.

launch.browser

If true, the system's default web browser will be launched automatically after the app is started. Defaults to true in interactive sessions only. The value of this parameter can also be a function to call with the application's URL.

host

The IPv4 address that the application should listen on. Defaults to the shiny.host option, if set, or "127.0.0.1" if not. See Details.

workerId

Can generally be ignored. Exists to help some editions of Shiny Server Pro route requests to the correct process.

quiet

Should Shiny status messages be shown? Defaults to FALSE.

display.mode

The mode in which to display the application. If set to the value "showcase", shows application code and metadata from a DESCRIPTION file in the application directory alongside the application. If set to "normal", displays the application normally. Defaults to "auto", which displays the application in the mode given in its DESCRIPTION file, if any.

test.mode

Should the application be launched in test mode? This is only used for recording or running automated tests. Defaults to the shiny.testmode option, or FALSE if the option is not set.

Details

For this function to work properly the main server function should always be assigned to an object (usually you'd name it server).

For instance :

• if you have a server.R script, make sure to assign your function to server

• if you use shinyServer, create a server function separately and use it in your shinyServer call.

It also assumes you follow standard practice in your use of callModule() or moduleServer().

Value

See ?shiny::shinyApp and ?shiny::runApp