migrated to poetry; updated all packages

backend/models/room_model.py

@@ -8,9 +8,10 @@ import logging
 from sqlalchemy import MetaData, CheckConstraint
 from sqlalchemy.exc import IntegrityError
 
-from datetime import datetime, timedelta
+from datetime import datetime
 
-from backend import db, app, login_manager
+from backend import db
+from backend.models.recorder_model import Recorder
 from backend.tools.scrape_rooms import scrape_rooms
 
 logger = logging.getLogger("lrc."+__name__)
@@ -28,7 +29,7 @@ class Room(db.Model):
     building_name = db.Column(db.Unicode(63), unique=False, nullable=True)
     building_number = db.Column(db.Unicode(63), unique=False, nullable=True)
 
-    recorder = db.relationship('Recorder', uselist=False, back_populates='room')  # one-to-one relation (uselist=False)
+    recorder = db.relationship(Recorder, uselist=False, back_populates='room')  # one-to-one relation (uselist=False)
 
     __table_args__ = (
         CheckConstraint('length(name) > 2',
@@ -36,7 +37,7 @@ class Room(db.Model):
     )
 
     def __init__(self, **kwargs):
-        super(Room, self).__init__(**kwargs)
+        db.Model.__init__(self, **kwargs)
 
     @staticmethod
     def get_by_name(name):