Exception Type: KeyError at ...

[adi-]

I get random KeyErrors from time to time. Any clues what its may be?

lib/python3.8/site-packages/formtools/wizard/views.py", line 415, in get_form
   form_class = self.get_form_list()[step]

[nordost8]

i have the same problem. Everything was fine on Django 4.2.3

[ProfRoxas]

We recently had similar issue and it was even using the wrong form for some step.
Turned out it was probably caused by the conditional dict had a function that was checking against the wizard.steps.
Worked fine for us after only depending on the cleaned_data in the condition

[adi-]

Traceback:

Traceback (most recent call last):
 File "/opt/venvs/[...]/lib/python3.8/site-packages/django/core/handlers/exception.py", line 55, in inner
   response = get_response(request)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/django/core/handlers/base.py", line 197, in _get_response
   response = wrapped_callback(request, *callback_args, **callback_kwargs)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/django/views/generic/base.py", line 104, in view
   return self.dispatch(request, *args, **kwargs)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/formtools/wizard/views.py", line 250, in dispatch
   response = super().dispatch(request, *args, **kwargs)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/django/views/generic/base.py", line 143, in dispatch
   return handler(request, *args, **kwargs)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/formtools/wizard/views.py", line 297, in post
   form = self.get_form(data=self.request.POST, files=self.request.FILES)
 File "/opt/venvs/[...]/lib/python3.8/site-packages/formtools/wizard/views.py", line 415, in get_form
   form_class = self.get_form_list()[step]

Exception Type: KeyError at [...]
Exception Value: 'company'

POST:
service_request_wizard_view-current_step = 'company'

any clues?

[ProfRoxas]

we only noticed the function we used in the condition_dict had the wizard passed to it with different steps under one request, which showed wizard.steps.current had different value even though it was the same step (probably checked the next step too somewhere so it passed to it with next step too, which evaulated as false then true right again)

Another side effect we saw it used the wrong form because of this, like used the form of the skipped step instead of the one for the step

I assume you have a condition_dict (because that's usually how the get_form_list() can have missing step)
If it refers to the wizard step, can you print the current step under it and see if it changes?
If so, try to only depend on the cleaned_data as that will be consistent during the request.

I tried to wrap my head around the code, but i couldn't get much of it, so if it's not there, i dont have an idea right now

[adi-]

I still get this error from time to time. It's like 1% of all form submits, but still. Tried everything to spot the problem, but with no results.

I assume, that this could be a problem of changing different routes by the user, where wizard looses step info or get confused. Still have no clue what could be the problem 😞

[claudep]

Would testing the patch in #291 worth it?

[adi-]

Haha! I just saw knyghty's pull request. Will give it a try!