Add conditional input in st.form

[franasa]

Is there a way to have this behavior also in st.form?

Can I add to. a selectbox an "other" option, where the user can add his own answer?

I’d condition a st.text_input to one of the possible options in the st.selectbox, like this: [selectbox] import streamlit as st # Create selectbox options = [f"Option #{i}" for i in range(3)] + ["Another option..."] selection = st.selectbox("Select option", options=options) # Create text input for user entry if selection == "Another option...": otherOption = st.text_input("Enter your other option...") # Just to show the selected option if selection != "Another option...": st.info(f…

such a feature could be especially useful for optional inputs

[edsaac]

Short answer is no, because all components within the st.form wait for the st.form_submit_button to pass their values. But a workaround using st.empty containers was posted in the original thread.