runAppWithParams: This is a wrapper to shiny::runApp to include parameters.

In jbryer/ShinyDemo: Shiny Applications with Parameters

This is a wrapper to shiny::runApp to include parameters.

Description

This function will run a Shiny app but will pass arbitrary parameters ('NAME = VALUE') through the '...' parameter to the application. This is done by modifying the Shiny UI and server function environments.

This function will traverse up the environment tree looking for the given parameter. Optionally, if 'type_check' is set to an 'is.' type function (e.g. 'is.numeric', 'is.list', etc.) it will check the object type. If the object is not found or the type doesn't match it will throw an error.

Usage

runAppWithParams(ui, server, ...)

get_shiny_parameter(param, type_check)

Arguments

ui	the Shiny ui object.
server	the Shiny server object.
...	[shiny::runApp()] parameters, [shiny::shinyApp()] parameters, or parameters to pass to the Shiny app.
param	the parameter name.
type_check	an 'is.' function (e.g. 'is.numeric') to test the parameter type.

Examples

if (interactive()) { # Only run this example in interactive R sessions
library(ShinyDemo)
data(mtcars)
data(faithful)
runAppWithParams(ui = ShinyDemo::df_viewer_ui,
                 server = ShinyDemo::df_viewer_server,
                 data_frames = list(mtcars = mtcars, faithful = faithful),
                 port = 2112)
}

jbryer/ShinyDemo documentation built on June 13, 2025, 7:55 p.m.