django - Exception Value: global name 'total_max_counter' is not defined -

i trying create new table in mysql db single field record incrementing value. keep getting error:

exception value: global name 'total_max_counter' not defined

can tell me going wrong?

views.py

from survey.models import totalcounter  def done(self, form_list, **kwargs):      total_counter = totalcounter.objects.get_or_create(total_max_counter)     total_counter.survey_wizard_total += 1      total_counter.save()      form in form_list:         form.save()      return render(self.request, 'return_to_amt.html', {         'form_data': [form.cleaned_data form in form_list],                 }) 

models.py

class totalcounter(models.model):      total_max_counter = models.smallintegerfield(default=0)       def __unicode__(self):         return self   

firstly, in get_or_create(), need specify argument in form of kwargs. only, object given kwargs, creating 1 if necessary. kwargs may empty if model has defaults fields.

the function definition get_or_create() is:

get_or_create(defaults=none, **kwargs)

secondly, trying update survey_wizard_total field of totalcounter object whereas model has no such field defined in it. has field total_max_counter in it. need correct in code.

this should work you:

from django.db.models import f survey.models import totalcounter  def done(self, form_list, **kwargs):      total_counter = totalcounter.objects.get_or_create(total_max_counter__gte=0)[0]      total_counter.total_max_counter = f('total_max_counter') + 1 # increment value of `total_max_counter` 1     total_counter.save() # save object      form in form_list:         form.save()      return render(self.request, 'return_to_amt.html', {         'form_data': [form.cleaned_data form in form_list],                 })