r - shiny allowling users to choose which columns to display -

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i dabbling datatable feature in shiny , interested in creating wellpanel or sidepanel lists columns of datatable , allows users choose columns want see on datatable.

right code below displays columns of toy dataset mtcars

library(shiny)  runapp(list(   ui = basicpage(     h2('the mtcars data'),     datatableoutput('mytable')   ),   server = function(input, output) {     output$mytable = renderdatatable({       mtcars     })   } ))

i interested in providing users ability turn these columns either on or off using checkbox 

  [1] "mpg"  "cyl"  "disp" "hp"   "drat"   [6] "wt"   "qsec" "vs"   "am"   "gear"   [11] "carb"

any on addressing issue appriciated. in advance.

my example uses checkboxgroupinput select multiple columns

library(shiny)  vchoices <- 1:ncol(mtcars) names(vchoices) <- names(mtcars)  runapp(list(   ui = basicpage(     h2('the mtcars data'),     checkboxgroupinput("columns","select columns",choices=vchoices,inline = t),     datatableoutput('mytable')     ),   server = function(input, output) {      observeevent(input$columns,{       cols <- as.numeric(input$columns)       if(length(input$columns) == 1){         df <- data.frame(mtcars[,cols])         names(df) <- names(mtcars)[cols]         output$mytable = renderdatatable(df)        }else{         output$mytable = renderdatatable(mtcars[,cols])        }       })    } ))

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