How do I call a class integer and add increase it's value?

Question

We have a class in our models.py:

class Score(model.Model):
    score = models.IntegerField()

We want to call the score object and update it inside of our views.py, when an answer is correct:

def answer(request, level_id):
    # next three lines are working for us.
    o = Level.objects.get(id=level_id)
    guess = request.GET.get('guess', '').strip()
    correct = o.answers.filter(value__iexact=guess).exists()

    b = Score.objects.get('score')
    b.score += o.points
    b.save()

We still haven't made b.score += o.points run using an if statement, because first I wanted to see if we can update b.score.

class Level(model.Models):
    points = models.IntegerField("Point Value')

The error we get is:

ValueError at /answer/1 too many values to unpack

Answer 1

Try this!

def answer(request, level_id):
    # next three lines are working for us.
    o = Level.objects.get(id=level_id)
    guess = request.GET.get('guess', '').strip()
    correct = o.answers.filter(value__iexact=guess).exists()

    b = Score.objects.get(score)
    b.score += int(o.points)
    b.save()

You are missing on saving the object, when you update it.

    b.save() # should save it

Answer 2

You would have to specify which Score instance you are trying to query.

Assuming you had created one before, and it has primary key 1, you can access it using:

b = Score.objects.get(pk=1)

Alternatively, if it's the first time, you could run:

b, created = Score.objects.get_or_create(pk=1)

created will be true if you just created it