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gadenbuie avatar gadenbuie commented on July 28, 2024

I have a couple suggestions. The first might just be a typo in the reprex, but you need a closing single quote in the conditionPanel() condition:

conditionalPanel("input.sidebar==='tab_number1'")

For the conditional panel to work, though, I think you'd need to give sidebarMenu() an explicit id, and the conditionalPanel() should be a directly contained in sidebarMenu() rather than appearing inside a menuItem()

sidebarMenu(
  id = "sidebar",
  menuItem("tab1", tabName = "tab_number1", icon = icon("arrow-right")),
  conditionalPanel(
    "input.sidebar === 'tab_number1'",
    selectInput(inputId = "selection", label = "Select country:", choices = "", selected = NULL)
  )
)

Here's a slightly more complete example:

sidebarMenu(
  id = "sidebar",
  menuItem("tab1", tabName = "tab_number1", icon = icon("arrow-right")),
  menuItem("tab2", tabName = "tab_number2", icon = icon("info")),
  conditionalPanel(
    "input.sidebar === 'tab_number1'",
    hr(),
    selectInput(inputId = "selection", label = "Select country:", choices = "", selected = NULL)
  )
)

from shinydashboard.

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