How to update material dropdown in R to have value and choices set to NULL

Asked May 09 '23 at 15:31

Active May 09 '23 at 15:31

Viewed 24 times

I would like to clear the choices in my material dropdown when an event is triggered.

observeEvent(input$rfpsList, {
    update_material_dropdown(session, "projectList", choices = NULL, value = NULL)
  }, ignoreInit = TRUE)

Unfortunately I am getting a error message: ERROR: Must include 'value' with update_material_dropdown.

I have tried the following:

setting value = character(0). It did not do much, since the choices were still there.

Changing to selectInput and updateSelectInput. However none of the choices are visible then. I think it doesnt work well while ushing shinymaterial.

Any other ideas?

asked May 09 '23 at 15:31

JujV

what about setting it to an empty string? `value = c('')` – Jamie May 09 '23 at 15:36
Unfortunately this does not work too – JujV May 09 '23 at 15:42
What is the interest of the dropdown if it has no choice? Why don't you hide it instead? – Stéphane Laurent May 09 '23 at 16:50
@StéphaneLaurent Yes, I thought about it too, but I have no luck with conditionalPanel. The same issue occures. – JujV May 10 '23 at 10:40

How to update material dropdown in R to have value and choices set to NULL

0 Answers0