Zero reference values possibly not being checked correctly.

[Randle Taylor]

Traceback (most recent call last):

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\core\handlers\base.py", line 111, in get_response response = callback(request, callback_args, *callback_kwargs)

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\views\generic\base.py", line 48, in view return self.dispatch(request, args, *kwargs)

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\views\generic\base.py", line 69, in dispatch return handler(request, args, *kwargs)

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\views\generic\edit.py", line 172, in post return super(BaseCreateView, self).post(request, args, *kwargs)

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\views\generic\edit.py", line 138, in post return self.form_valid(form)

File "c:\deploy\qatrackplus\qatrack\qa\views.py", line 337, in form_valid ti_form.save()

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\forms\models.py", line 364, in save fail_message, commit, construct=False)

File "c:\deploy\virtualenvs\qatrackplus\lib\site-packages\django\forms\models.py", line 86, in save_instance instance.save()

File "c:\deploy\qatrackplus\qatrack\qa\models.py", line 948, in save self.calculate_pass_fail()

File "c:\deploy\qatrackplus\qatrack\qa\models.py", line 983, in calculate_pass_fail diff = self.percent_difference()

File "c:\deploy\qatrackplus\qatrack\qa\models.py", line 958, in percent_difference raise ValueError("Tried to calculate percent diff with a zero reference value")

ValueError: Tried to calculate percent diff with a zero reference value

<WSGIRequest path:/qatrack/qa/1, GET:<QueryDict: {u'day': [u'next']}>

[Randle Taylor]

fixed with admin clean check.