Added the Services layer to the code to do the database operation

src/pilgrim/models/travel_diary.py

@@ -1,3 +1,5 @@
+from typing import Any
+
 from sqlalchemy import Column, String, Integer
 
 from ..database import Base
@@ -6,3 +8,7 @@ class TravelDiary(Base):
     __tablename__ = "TravelDiary"
     id = Column(Integer, primary_key=True)
     name = Column(String)
+
+    def __init__(self, name: str, **kw: Any):
+        super().__init__(**kw)
+        self.name = name