I have troubles with Shiny dashboardSidebar - r

Question

I created my shiny dashboard sidebar like this
I linked MenuItem to tabItem, by tabName and in each tabItem I put tabsetPanel
I would like, when I choose group A, to be able to display the different panels that are the subgroups A1, A2, and A3. I would like to do the same for group B and its subgroups. I can't do it, because only the panels in group B are displayed. I would like to keep this dashboardSidebar architecture.
Here are below my scripts
ui <- dashboardPage(
dashboardHeader(title = "DASHBOARD"),
dashboardSidebar(width = 250,
sidebarMenu(
menuItem( "Group A",tabName = "gpA",
selectInput(inputId = "Var1",label="variable 1", choices = c("Total","cat1","cat2"),
selected="Total"),
selectInput(inputId = "Var2",label="variable 2", choices = c("Total","cat1","cat2"),
selected="Total")),
menuItem("Group B",tabName = "gpB")
)
),
dashboardBody(
tabItems(
tabItem(
tabName = "gpA",
fluidRow(box(selectInput(inputId = "Hospital1",choices = c(LETTERS),
label = "Choice hospital 1"),
width = 6,height = 70,
solidHeader = TRUE),
box(selectInput(inputId = "Hopital2",choices = rev(c(LETTERS)),
label = "Choice hospital 2"),
width = 6,height = 70,
solidHeader = TRUE)),
fluidRow( tabsetPanel(
tabPanel("Sub group A2",
box(leafletOutput("")),box(leafletOutput(""))
),
tabPanel("Sub group A3", box(leafletOutput("")),
box(leafletOutput(""))),
tabPanel("Concurrence", leafletOutput(""))
))
),
tabItem(
tabName = "gpB",
fluidRow(box(selectInput(inputId = "Commune",choices = c(letters),
label = "choice a Zip code"),
width = 6,height = 70,
solidHeader = TRUE)),
fluidRow( tabsetPanel(
tabPanel("Sub group B1",
leafletOutput("")
),
tabPanel("Sub group B2",
leafletOutput(""))
))
)
)
)
)
server <- function(input, output) {
}
shinyApp(ui, server)

Answer 1

As you are using multiple selectInputs (sub items) within the first sidebarmenu item, you need to use menuSubItem (or menuItem) under that to use the tabName. Here tabName gpA1 is what you need to refer to in dashboardBody. You cannot access the tabpanels with gpA when you have sub-items. Try this
ui <- dashboardPage(
dashboardHeader(title = "DASHBOARD"),
dashboardSidebar(width = 250,
sidebarMenu( id="tabs",
menuItem( "Group A", tabName = "gpA",
selectInput(inputId = "Var1",label="variable 1", choices = c("Total","cat1","cat2"),
selected="Total"),
selectInput(inputId = "Var2",label="variable 2", choices = c("Total","cat1","cat2"),
selected="Total"),
menuSubItem("My Group A", tabName="gpA1", ### <---- refer to this tabName in dashboardBody
icon = icon("line-chart"))
),
menuItem("Group B",tabName = "gpB")
)
),
dashboardBody(
tabItems(
tabItem(
tabName = "gpA1",
fluidRow(box(selectInput(inputId = "Hospital1",choices = c(LETTERS),
label = "Choice hospital 1"),
width = 6,height = 70,
solidHeader = TRUE),
box(selectInput(inputId = "Hopital2",choices = rev(c(LETTERS)),
label = "Choice hospital 2"),
width = 6,height = 70,
solidHeader = TRUE)),
fluidRow( tabsetPanel(
tabPanel("Sub group A2",
box(leafletOutput("")),box(leafletOutput(""))
),
tabPanel("Sub group A3", box(leafletOutput("")),
box(leafletOutput(""))),
tabPanel("Concurrence", leafletOutput(""))
))
),
tabItem(
tabName = "gpB",
fluidRow(box(selectInput(inputId = "Commune",choices = c(letters),
label = "choice a Zip code"),
width = 6,height = 70,
solidHeader = TRUE)),
fluidRow( tabsetPanel(
tabPanel("Sub group B1",
leafletOutput("")
),
tabPanel("Sub group B2",
leafletOutput(""))
))
)
)
)
)
server <- function(input, output) {
}
shinyApp(ui, server)