Error: unexpected datatables/htmlwidget output

dt

#1

When I run the code:

output$Tab<-datatable(
        
        data.frame(
          "People"=people,
          "Industries"=industries,
          "Schools"=schools,
         "Hospitals"=hospitals),
        extensions=c('Buttons','AutoFill'),options=list(dom='Bfrtip',buttons=list(
          'copy','pdf','csv','excel','print'),autoFill=TRUE)

I get the following error message:

> runApp('Plots')

Listening on http://127.0.0.1:3612
Warning: Error in .subset2(x, "impl")$defineOutput: Unexpected datatables output for TabUnexpected htmlwidget output for Tab
  56: stop
  55: .subset2(x, "impl")$defineOutput
  54: $<-.shinyoutput
  52: server [C:\Users\Idiaye\Documents\Plots/app.R#178]
Error in .subset2(x, "impl")$defineOutput(name, value, label) : 
  Unexpected datatables output for TabUnexpected htmlwidget output for Tab

Updating Shiny package from 1.0 to 1.1
#2

You need to wrap your call to DT::datatable in a renderDataTable() statement. Here's an example:

library(shiny)
library(DT)

shinyApp(
  ui = fluidPage(
    dataTableOutput("Tab")
  ),
  server = function(input, output, session) {
    output$Tab <- datatable(
      mtcars
    )
  }
)

Running the above gives me the same error as you saw:

Listening on http://127.0.0.1:3334
Warning: Error in .subset2(x, "impl")$defineOutput: Unexpected datatables output for TabUnexpected htmlwidget output for Tab
  51: stop
  50: .subset2(x, "impl")$defineOutput
  49: $<-.shinyoutput
  47: server [/cloud/project/unexpected_datatables.R#10]
Error in .subset2(x, "impl")$defineOutput(name, value, label) : 
  Unexpected datatables output for TabUnexpected htmlwidget output for Tab

But if I do this, the app works as expected:

library(shiny)
library(DT)

shinyApp(
  ui = fluidPage(
    dataTableOutput("Tab")
  ),
  server = function(input, output, session) {
    output$Tab <- renderDataTable(
      datatable(mtcars)
    )
  }
)

If you haven't already, it's worth taking the time to go through the shiny tutorials — they really help with understanding how all the pieces fit together with shiny code.


#3

Thanks a lot. I appreciate your help