St.feedback in a chat

[Man_Yi]

The following script runs perfectly

import streamlit as st
nstars = st.feedback("stars") 
if nstars is not None:
    st.success(f"You selected {nstars+1} star(s). Thanks for rating!", icon="😀")

However, in a chat with a if-statement, the success message is not printed.

if prompt := st.chat_input("Start your chat here!",key="question"):
    with st.chat_message("user"):
        st.markdown(prompt)
    st.session_state.messages.append({"role": "user", "content": prompt})
    nstars = st.feedback("stars") 
    if nstars is not None:
        st.success(f"You selected {nstars+1} star(s). Thanks for rating!", icon="😀")

Does anyone know how to resolve this?

[mathcatsand]

This is an anti-pattern. It’s like having a button nested in a button. The st.feedback widget will only appear immediately after a user submits a chat message. If the user interacts with the feedback widget, the resulting rerun will have if prompt... evaluated to False, so there will be no st.feeback to evaluate.

There’s a variety of ways to implement it, depending on how you want to save feedback and if you want users to be able to change their mind or vote on older replies. Here’s just one example:

St.feedback with thumbs is not giving results

Here’s a toy example that saves the last user + AI message with feedback to a file. If a user doesn’t give feedback on some response, it’s skipped. If you want to save then entire conversation, you could write all messages to the file and just append the feedback when given. You could also add the feedback to the message dict in Session State then write the whole conversation to a file when done. If you need to persist the feedback widgets in the conversation throughout, you’ll need to introdu…