functioning

models.py

@@ -0,0 +1,10 @@
+from app import db
+
+class Content(db.Model):
+    id = db.Column(db.Integer, primary_key=True)
+    file_name = db.Column(db.String(120), nullable=False)
+    duration = db.Column(db.Integer, nullable=False)
+    player_id = db.Column(db.Integer, db.ForeignKey('player.id'), nullable=True)
+    group_id = db.Column(db.Integer, db.ForeignKey('group.id'), nullable=True)
+
+# other models...