实现后台更新数据

db_utils.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 # -*- coding:utf-8 -*-
-from typing import Generator
 
 from sqlalchemy import Column, Integer, String, create_engine
 from sqlalchemy.orm import declarative_base, sessionmaker
@@ -29,11 +28,3 @@ Base.metadata.create_all(engine)
 
 Session = sessionmaker(bind=engine, )
 session = Session()
-
-
-def get_session() -> Generator:
-    try:
-        db = Session()
-        yield db
-    finally:
-        db.close()

main.py

@@ -4,28 +4,29 @@ import streamlit as st
 from loguru import logger
 
 from bak.init_data import BatchDataRead
-from db_utils import BatchData, get_session
+from db_utils import BatchData, session
 
-st.session_state.setdefault('data_table', [])
-
-
-# session: Session = next(get_session())
 
 def get_data_from_db():
-    logger.info("init")
-    return (BatchDataRead.from_orm(db_obj).dict()
-            for db_obj in next(get_session()).query(BatchData).all())
+    logger.debug("init")
+    db_objs = session.query(BatchData).all()
+    res = (BatchDataRead.from_orm(db_obj).dict() for db_obj in db_objs)
+    return list(res)
 
 
-# logger.debug(st.session_state.data_table)
-# if not st.session_state.data_table:
-st.session_state.data_table = get_data_from_db()
+st.session_state.setdefault('data_table', get_data_from_db())
 
 df = pd.DataFrame(data=st.session_state.data_table)
 
 
-def update_handler(*args, **kwargs):
-    logger.debug(f"{args=}, {kwargs=}")
+def update_handler():
+    edited_rows = st.session_state['edited_info'].get('edited_rows')
+    for id_, update_data in edited_rows.items():
+        row_db = session.query(BatchData).where(BatchData.id == int(edited_df.loc[id_].id)).first()
+        logger.info(f"update: {update_data}")
+        for field in update_data:
+            setattr(row_db, field, update_data[field])
+        session.commit()
 
 
 edited_df = st.data_editor(df, key="edited_info",
@@ -42,18 +43,11 @@ edited_df = st.data_editor(df, key="edited_info",
                                'is_validation': "是否是验证集",
                            })
 
-favorite_command = edited_df.loc[edited_df["id"].idxmax()]
-data_table_change_info = st.session_state['edited_info']
-logger.debug(f"{data_table_change_info=}")
+# favorite_command = edited_df.loc[edited_df["id"].idxmax()]
+# data_table_change_info = st.session_state['edited_info']
+# logger.debug(f"{data_table_change_info=}")
 
-edited_rows = data_table_change_info.get('edited_rows')
-session = next(get_session())
-for id_, update_data in edited_rows.items():
-    row_db = session.query(BatchData).where(BatchData.id == int(edited_df.loc[id_].id)).first()
-    for field in update_data:
-        setattr(row_db, field, update_data[field])
-    st.text(f"update: {id_=}, {update_data=}")
-    st.toast('Your edited image was saved!', icon='😍')
-    session.commit()
-    st.rerun()
-logger.info('end')
+# st.rerun()
+# st.session_state.data_table = get_data_from_db()
+
+# st.rerun()