Saving checkbox values into the sqlachemy database - flask

Question

Im new to flask and flask-sqlalchemy
Im currently working on website with checkboxes; but im getting an error. Here is the part of the code.
bodygoal= request.form.get('BodyGoal')
workouttype= request.form.getlist('WorkoutType')
slevel= request.form.get('SkillLevel')
new_workout=Workout(bodygoalDB=bodygoal, workouttypeDB=workouttype, slevelDB=slevel, user_id=current_user.id)
db.session.add(new_workout)
db.session.commit()
as for the database model; here is also the part of the part of the code
class Workout(db.Model):
id = db.Column(db.Integer, primary_key=True)
bodygoalDB=db.Column(db.Integer)
workouttypeDB=db.Column(db.String())
slevelDB=db.Column(db.Integer)
user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
this is the error im getting:
sqlalchemy.exc.InterfaceError: (sqlite3.InterfaceError) Error binding parameter 1 - probably unsupported type.
[SQL: INSERT INTO workout ("bodygoalDB", "workouttypeDB", "slevelDB", user_id) VALUES (?, ?, ?, ?)]
[parameters: ('Shredded', ['on', 'Dumbell', 'Barbell'], 'Beginner', 1)]
(Background on this error at: https://sqlalche.me/e/14/rvf5)
the workouttype variables gets all the checkbox values from the website; currently, im planning to store them in 1 cell but Im also accepting suggestions on how to deal with checkbox values with sqlalchemy. thanks :)

Answer 1

request.form.getlist('WorkoutType') is returning a list of strings, e.g. ['on', 'Dumbell', 'Barbell'], but you are trying to assign the list to column of data type string.
You could convert the string array to a comma delimited string:
# Get the string array
workout_types = request.form.getlist('WorkoutType')
# Convert to comma delimited string
workout_csv = ','.join(workout_types)
# etc
new_workout = Workout(bodygoalDB=bodygoal, workouttypeDB=workout_csv, slevelDB=slevel, user_id=current_user.id)