added group functionality

models.py

@@ -8,6 +8,7 @@ db = SQLAlchemy() # Create the extension object
 class User(UserMixin, db.Model):
     id = db.Column(db.Integer, primary_key=True)
     updated_at = db.Column(db.TIMESTAMP, default=datetime.now(), onupdate=datetime.now(), nullable=False)
+    group_id = db.Column(db.Integer, default=0, nullable=False)
     name = db.Column(db.String(40), unique=True, nullable=False)
     password_hash = db.Column(db.String(256))
     is_admin = db.Column(db.Boolean, default=False)
@@ -51,7 +52,12 @@ class User(UserMixin, db.Model):
         shared = Shared.query.filter_by(user_id=self.id, listofitem_id=listofitem_id).first()
         return True if shared else False
 
-
+    def set_group_id(self, secret):
+        group = Group.query.filter_by(secret=secret).first()
+        if group:
+            return group.id
+        else:
+            return 0
 
 class ListOfItems(db.Model):
     id = db.Column(db.Integer, primary_key=True)
@@ -97,3 +103,9 @@ class Item(db.Model):
 class Shared(db.Model):
     user_id = db.Column(db.Integer, primary_key=True)
     listofitem_id = db.Column(db.Integer, primary_key=True)
+
+class Group(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    updated_at = db.Column(db.TIMESTAMP, default=datetime.now(), onupdate=datetime.now(), nullable=False)
+    secret = db.Column(db.String(128))
+