chart code with DB

main.py

@@ -1,21 +1,26 @@
-from fastapi import FastAPI, HTTPException, Body
+from fastapi import FastAPI, HTTPException, Body, Depends
 from sqlalchemy import create_engine, Column, Integer, String
 from sqlalchemy.ext.declarative import declarative_base
 from sqlalchemy.orm import sessionmaker
 from fastapi.responses import HTMLResponse
+from fastapi import Depends
 import gradio as gr
+import os
+import logging
 
 app = FastAPI()
 
-SQLALCHEMY_DATABASE_URL = "sqlite:///./test.db"
+# Use an absolute path for the SQLite database file
+database_path = os.path.join(os.getcwd(), "test.db")
+SQLALCHEMY_DATABASE_URL = f"sqlite:///{database_path}"
+
+# Set up logging for debugging
+logging.basicConfig(level=logging.DEBUG)
 
 engine = create_engine(SQLALCHEMY_DATABASE_URL)
 SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
 Base = declarative_base()
 
-def create_gr_chart(data):
-    chart = gr.LineChart(data=data)
-    return chart.launch()
 class Item(Base):
     __tablename__ = "items"
 
@@ -32,6 +37,10 @@ def get_db():
     finally:
         db.close()
 
+def create_gr_chart(data):
+    chart = gr.LineChart(data=data)
+    return chart.launch()
+
 @app.post("/form/")
 async def store_data(item: Item, db: Session = Depends(get_db)):
     db.add(item)
@@ -42,6 +51,6 @@ async def store_data(item: Item, db: Session = Depends(get_db)):
 @app.get("/visualization/", response_class=HTMLResponse)
 async def show_visualization():
     # Fetch data from the database and create a Gradio chart
-    data = get_data_from_db()  # Define this function to fetch data from the database
-    chart = create_gr_chart(data)  # Define this function to create a Gradio chart
-    return chart
+    data = get_data_from_db()  # Replace with your function to fetch data from the database
+    chart = create_gr_chart(data)  # Replace with your function to create a Gradio chart
+    return chart