Method update

backend/src/modules/user/service.py:227–279

Update user information. Updates user fields with validation for unique constraints on email and username. Only provided fields are updated. Args: user_id: ID of the user to update. user_update: Fields to update with new values. db: Datab

(self, user_id: int, user_update: UserUpdate, db: AsyncSession)

        return user

    async def update(self, user_id: int, user_update: UserUpdate, db: AsyncSession) -> dict[str, Any]:
        """Update user information.

        Updates user fields with validation for unique constraints on email
        and username. Only provided fields are updated.

        Args:
            user_id: ID of the user to update.
            user_update: Fields to update with new values.
            db: Database session for the operation.

        Returns:
            Updated user data dictionary.

        Raises:
            UserNotFoundError: If the user doesn't exist.
            UserExistsError: If email or username conflicts with existing users.

        Note:
            Validates uniqueness when updating email or username.
            Only non-deleted users can be updated.

        Example:
            ```python
            update_data = UserUpdate(
                email="newemail@example.com",
                first_name="John"
            )
            updated_user = await service.update(123, update_data, db)
            ```
        """
        existing_user = await crud_users.get(db=db, id=user_id, is_deleted=False)
        if not existing_user:
            raise UserNotFoundError(f"User with ID {user_id} not found")

        update_data = user_update.model_dump(exclude_unset=True)

        if "email" in update_data and update_data["email"] != existing_user["email"]:
            email_exists = await crud_users.exists(db=db, email=update_data["email"])
            if email_exists:
                raise UserExistsError("Email already registered")

        if "username" in update_data and update_data["username"] != existing_user["username"]:
            username_exists = await crud_users.exists(db=db, username=update_data["username"])
            if username_exists:
                raise UserExistsError("Username already taken")

        updated_user = await crud_users.update(
            db=db, object=user_update, id=user_id, return_columns=list(UserSchema.model_fields.keys())
        )
        if not updated_user:
            raise UserNotFoundError(f"User with ID {user_id} not found")
        return updated_user

    async def check_update_permission(self, requester_user: dict[str, Any], target_username: str) -> bool:
        """Check if user has permission to update another user.