优化提问时的消息展示顺序

app.py

@@ -330,18 +330,20 @@ def app():
             with st.chat_message("assistant"):
                 st.write("Hello👋, how can I help you today? 😄")
 
-            # Display chat messages from history on app rerun - 这部分不用session，利用好rerun
+            # Display chat messages from history on app rerun
             for message in st.session_state.messages:
                 with st.chat_message(message["role"]):
                     st.markdown(message["content"][0])
+            
+            # Display new user question.
+            with st.chat_message("user"):
+                st.markdown(user_question)
 
             #这里的session.state就是保存了这个对话会话的一些基本信息和设置
             retrieved_chunks_for_user = searchVDB(user_question, st.session_state.embeddings_df, st.session_state.faiss_index)
-            #retrieved_chunks_for_user = []
             prompt = decorate_user_question(user_question, retrieved_chunks_for_user)
             st.session_state.messages.append({"role": "user", "content": [user_question, prompt]})
-            with st.chat_message("user"):
-                st.markdown(user_question)
+            
             # Display assistant response in chat message container
             with st.chat_message("assistant"):
                 message_placeholder = st.empty()