How to have table in Shiny filled by user? - r

Question

I want users of my Shiny app to fill in the values of a 2x2 table with row and column names. Of course, I could do it with 4 input boxes, but I assume that it will be tricky to position everything neatly. Despite that, I would prefer a table layout such as the one provided by the DT package. Thus, my question is: Is it possible to have a datatable (or something similar) filled by the user?

Answer 1

You can use shinysky
devtools::install_github("AnalytixWare/ShinySky") package
or rhandsontable to do what you want:
rm(list = ls())
library(shiny)
library(shinysky)
server <- shinyServer(function(input, output, session) {
# Initiate your table
previous <- reactive({mtcars[1:10,]})
MyChanges <- reactive({
if(is.null(input$hotable1)){return(previous())}
else if(!identical(previous(),input$hotable1)){
# hot.to.df function will convert your updated table into the dataframe
as.data.frame(hot.to.df(input$hotable1))
}
})
output$hotable1 <- renderHotable({MyChanges()}, readOnly = F)
output$tbl = DT::renderDataTable(MyChanges())
})
ui <- basicPage(mainPanel(column(6,hotable("hotable1")),column(6,DT::dataTableOutput('tbl'))))
shinyApp(ui, server)

Answer 2

A solution with DT:
library(DT)
library(shiny)
dat <- data.frame(
V1 = c(as.character(numericInput("x11", "", 0)), as.character(numericInput("x21", "", 0))),
V2 = c(as.character(numericInput("x21", "", 0)), as.character(numericInput("x22", "", 0)))
)
ui <- fluidPage(
fluidRow(
column(5, DT::dataTableOutput('my_table')),
column(2),
column(5, verbatimTextOutput("test"))
)
)
server <- function(input, output, session) {
output$my_table <- DT::renderDataTable(
dat, selection = "none",
options = list(searching = FALSE, paging=FALSE, ordering=FALSE, dom="t"),
server = FALSE, escape = FALSE, rownames= FALSE, colnames=c("", ""),
callback = JS("table.rows().every(function(i, tab, row) {
var $this = $(this.node());
$this.attr('id', this.data()[0]);
$this.addClass('shiny-input-container');
});
Shiny.unbindAll(table.table().node());
Shiny.bindAll(table.table().node());")
)
output$test <- renderText({
as.character(input$x11)
})
}
shinyApp(ui, server)