feat: Added travel models, travel creation command, travels list command with pagination, set help message, improvements and fixes

app/models/user.py

@@ -1,20 +1,16 @@
 __all__ = ("User",)
 
 import re
-from typing import Any
 
 import sqlalchemy as sa
-from sqlalchemy.ext.declarative import declarative_base
-from sqlalchemy.orm import validates
+from sqlalchemy.orm import relationship, validates
 
 from app import session
+from app.models import Base
 from app.utils import geo
 from app.utils.db import utcnow
 
 
-Base: Any = declarative_base()
-
-
 class User(Base):
     __tablename__ = "users"
 
@@ -38,6 +34,9 @@ class User(Base):
         server_default=utcnow(),
     )
 
+    notes = relationship("Note", backref="author")
+    owned_travels = relationship("Travel", backref="author")
+
     @validates("username")
     def validate_username(self, key, value):
         regex_pattern = re.compile(r"^[a-zA-Z0-9_]{5,20}$")
@@ -98,6 +97,9 @@ class User(Base):
 
         return normalized_value
 
+    def get_user_travels(self):
+        return self.owned_travels + self.travels
+
     def get_human_readable_datejoined(self):
         return self.date_joined.strftime("%Y-%m-%d %H:%M:%S")