I have one script which plots the graph for any category type say A,B & C ,i am using "textinput" for entering desired category. Now i want to pass this selected category to another script through URL. This script should take that value and do calculations. How can i pass variables from one shiny script to another as input?
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1 Answer
Well, there are many different ways for sending data via URL.
This is a very primitive example of a dispatcher app, using HTTP GET via readlines() for sending some tiny data with Shiny to a remote URL.
In this answer, you can read how to parse the data from the query string when creating the receiver app.
library(shiny)
dataToBeSent <- list(
"someVariable" = "myValue",
"anotherVariable" = "anotherValue"
)
ui <- shinyUI(
titlePanel("Simply sending some data via HTTP GET")
)
server <- shinyServer(function(input, output, session) {
sendData <- function ( listData, url ){
print("Server says: Let's pass data to a remote url!")
url <- paste0( url,"?",paste(paste( names(listData),unname(listData),sep="=" ),collapse="&"))
readLines(URLencode(url))
}
sendData( dataToBeSent, "http://www.example.com/shinyApp/" )
})
shinyApp(ui = ui, server = server)
Depending on what you want to achieve, if you want to share large amounts of data, it might be better to use a shared database or to use an HTTP POST request instead.
