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POShiny reactiveUI hangs with multiple uiOutput calls on same condition variable
 

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  1. POShiny reactiveUI hangs with multiple uiOutput calls on same condition variable
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    <p>I am trying to make a reactive UI with sliders that drop in and out via a dropdown in shiny. I have a server with reactiveUI sliders (server.R):</p> <pre><code>library(shiny) shinyServer(function(input, output) { output$slider1 &lt;- reactiveUI(function() { sliderInput("s1", "slide 1", min = 1, max = 100, value = 1) }) output$slider2 &lt;- reactiveUI(function() { sliderInput("s2", "slide 2", min = 1, max = 100, value = 1) }) }) </code></pre> <p>I can run the server fine with the following code (ui.R): </p> <pre><code>library(shiny) shinyUI(pageWithSidebar( headerPanel("Hello Shiny!"), sidebarPanel( selectInput("dataset", "number of buckets:", choices = c(1,2,3)), conditionalPanel( condition = "input.dataset==2", uiOutput("slider1"),uiOutput("slider2")), conditionalPanel( condition = "input.dataset==1", sliderInput("s1", "slide 1", min = 1, max = 100, value = 1) ) ), mainPanel( ) )) </code></pre> <p>but if I try to make both conditionalPanels call uiOutput, the server freezes: </p> <pre><code>library(shiny) shinyUI(pageWithSidebar( headerPanel("Hello Shiny!"), sidebarPanel( selectInput("dataset", "number of buckets:", choices = c(1,2,3)), conditionalPanel( condition = "input.dataset==2", uiOutput("slider1"),uiOutput("slider2")), conditionalPanel( condition = "input.dataset==1", uiOutput("slider1") ) ), mainPanel( ) )) </code></pre> <p>I have played around with this, and found that it happens anytime that use the same condition variable and multiple uiOutput calls. Any suggestions? Thanks.</p>
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    1. USAlSki
    1. USJim Crozier
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      1. POShiny reactiveUI hangs with multiple uiOutput calls on same condition variable
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      1. USNicholas Hamilton
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    1. COThe error message in the console reads `Uncaught Duplicate binding for ID slider1`. My guess is that binding variables occurs prior to execution of any conditional statements, which is why the error throws up.
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      1. USRamnath
    2. COThanks Ramnath. How did you get the error message to print to the console?
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      1. USJim Crozier
    3. COIf you are using Google Chrome, just right click on the page and choose Inspect Element. This will open up Developer Tools and you will find a tab named Console, which has the error messages. For Firefox, I believe you can use FireBug.
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      1. POShiny reactiveUI hangs with multiple uiOutput calls on same condition variable
      1. USRamnath
 

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