R shiny conditionalPanel output value

Question

There are many questions about conditionalPanel in R shiny, but I still don\'t understand how I can use values created by server.R for conditionalPanel

Answer 1

@Julien Navarre is right: the output must be rendered. Except if you set its option suspendWhenHidden to FALSE:

  output$disable_ui<-reactive({
    query<-parseQueryString(clientData$url_search)
    url_path<-paste(sep="","http://some-url.com/php/session_check.php?sid=",query, collapse="")
    read.table(url_path)
  })
  outputOptions(output, 'disable_ui', suspendWhenHidden=FALSE)