Mutually dependent select list input controls

0
votes

I have two selectInput controls. Depending on what the user selects in the first selectInput control, I want to change the choices in the second selectInput (to choices that make sense given the value selected in the first control). And vice-versa.

Can this be done? If so, how?

1
rshiny
Please don’t add the tag to the title of the question. It’s unnecessary, since that’s explicitly what tags are for. – Konrad Rudolph

1 Answers

0
votes

Yes, you would use if statements to evaluate the input from the first selections with boolean logic.

if(selection1=="x"): buttonList<- aList
if(selection1=="y"): buttonList<- bList
if(selection1=="z"): buttonList<- cList

Where each list has a different set of possibilities to be dropped into the next input control as choices relative to the first. It is not too difficult.