changes of column import and add serialize table column fild show as per sheet

app/models/manhole_domestic_chamber_model.py

@@ -12,7 +12,7 @@ class ManholeDomesticChamber(db.Model):
 
     # Basic Fields
     Location = db.Column(db.String(500))
-    Node_No = db.Column(db.String(100))
+    MH_NO = db.Column(db.String(100))
     Depth_of_MH = db.Column(db.Float)
  
     # Excavation categories 
@@ -46,3 +46,6 @@ class ManholeDomesticChamber(db.Model):
 
     def __repr__(self):
         return f"<HanholeDomesticChamberConstruction {self.Location}>"
+
+    def serialize(self):
+        return {c.name: getattr(self, c.name) for c in self.__table__.columns}