tutorial113

tutorial113/main.py

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+import streamlit as st
+from langchain_openai import ChatOpenAI
+from langchain_mongodb.chat_message_histories import MongoDBChatMessageHistory
+llm=ChatOpenAI(model="gpt-4o")
+
+st.title("chat app with message history")
+user=st.text_input("enter your username")
+qsn=st.text_input("enter your question")
+chat_with_history=MongoDBChatMessageHistory(
+    session_id=user,
+    connection_string="mongodb+srv://ronidas:[email protected]",
+    database_name="langchain",
+    collection_name="chat_history"
+)
+if user:
+    if qsn:
+        btn=st.button("ok")
+        if btn:
+            chat_with_history.add_user_message(qsn)
+            response=llm.invoke(qsn)
+            chat_with_history.add_ai_message(response.content)
+            st.write(response.content)