ValueBox in R - Only number is shown - r

Question

I am building a shiny dashboard and I want to implement a valueBox within the Dashboard.
body <- dashboardBody(
fluidRow(
valueBox(totalSales,"Total Sales",color="blue")
),
fluidRow(
DT::dataTableOutput("salesTable")
),
fluidRow(
DT::dataTableOutput("top10Sales")
)
)
And this is the result:
The number on the upper left is the variable totalSales but it isn't formatted in a valueBox.
Does anyone know what the problem is?
I appreciate your answers!!
My try with valueBoxOutput, but with the same result:
ui.R
body <- dashboardBody(
fluidRow(
valueBoxOutput("totalSales")
),
fluidRow(
DT::dataTableOutput("salesTable")
),
fluidRow(
DT::dataTableOutput("top10Sales")
)
)
server.R
function(input, output, session) {
output$salesTable = DT::renderDataTable(top10Sales)
output$top10Sales = DT::renderDataTable(top10Sales)
#output$totalSales = DT::renderDataTable(totalSales)
output$totalSales <- renderValueBox({
valueBox(totalSales, "Approval",color = "yellow")
})
}
And still the same result:
By the way: Infobox is working:
infoBox("test", value=1, width=3)

Answer 1

valueBox has to be used on the server side. To display a shiny dynamic UI element, there's generally a function (in this case valueBoxOutput) available to display it:
library(shinydashboard)
library(dplyr)
library(DT)
body <- dashboardBody(
fluidRow(
valueBoxOutput("totalCars")
),
fluidRow(
DT::dataTableOutput("table")
)
)
ui <- dashboardPage(header = dashboardHeader(),
sidebar = dashboardSidebar(),
body = body
)
server <- function(input, output) {
output$table = DT::renderDataTable(mtcars)
output$totalCars <- renderValueBox({
valueBox("Total", nrow(mtcars), color = "blue")
})
}
shinyApp(ui, server)