Dynamic Tab creation with content - r

Question

I am trying to build a shiny app where the user can decide how many tabs he wants to be shown. Here's what I have so far:
library(shiny)
library(shinydashboard)
library(shinydashboardPlus)
library(glue)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sliderInput(inputId = "slider", label = NULL, min = 1, max = 5, value = 3, step = 1)
),
dashboardBody(
fluidRow(
box(width = 12,
p(
mainPanel(width = 12,
column(6,
uiOutput("reference")
),
column(6,
uiOutput("comparison")
)
)
)
)
)
)
)
server <- function(input, output) {
output$reference <- renderUI({
tabsetPanel(
tabPanel(
"Reference",
h3("Reference Content"))
)
})
output$comparison <- renderUI({
req(input$slider)
tabsetPanel(
lapply(1:input$slider, function(i) {
tabPanel(title = glue("Tab {i}"),
value = h3(glue("Content {i}"))
)
})
)
})
}
shinyApp(ui = ui, server = server)
This does not produce the desired results, as the comparison tabs are not shown properly.
I have already checked out these 2 threads:
R Shiny - add tabPanel to tabsetPanel dynamically (with the use of renderUI)
R Shiny dynamic tab number and input generation
but they don't seem to solve my problem. Yes, they create tabs dynamically with a slider, but they don't allow to fill these with content as far as I can tell.

Answer 1

What works for me is a combination for lapply and do.call
library(shiny)
library(shinydashboard)
library(shinydashboardPlus)
library(glue)
ui <- dashboardPage(
dashboardHeader(),
dashboardSidebar(
sliderInput(inputId = "slider", label = NULL, min = 1, max = 5, value = 3, step = 1)
),
dashboardBody(
fluidRow(
box(width = 12,
p(
mainPanel(width = 12,
column(6,
uiOutput("reference")
),
column(6,
uiOutput("comparison")
)
)
)
)
)
)
)
server <- function(input, output) {
output$reference <- renderUI({
tabsetPanel(
tabPanel(
"Reference",
h3("Reference Content"))
)
})
output$comparison <- renderUI({
req(input$slider)
myTabs = lapply(1:input$slider, function(i) {
tabPanel(title = glue("Tab {i}"),
h3(glue("Content {i}"))
)
})
do.call(tabsetPanel, myTabs)
})
}
shinyApp(ui = ui, server = server)