Update app.py

app.py

@@ -258,7 +258,7 @@ def create_gradio_interface(rag_system: AdvancedRAGSystem) -> gr.Blocks:
             pass
             
     def update_history(question: str):
-        return f"Last context used ({self.source_documents} documents):\n\n{self.context}"
+        return f"Last context used ({rag_system.source_documents} documents):\n\n{rag_system.context}"
         
     with gr.Blocks(title="Advanced RAG System") as demo:
         gr.Markdown("# Advanced RAG System with PDF Processing")
@@ -322,7 +322,7 @@ def create_gradio_interface(rag_system: AdvancedRAGSystem) -> gr.Blocks:
 
         query_button.click(
             fn=update_history,
-            inputs=[],
+            inputs=[question_input],
             outputs=[history_output]
         )