Re: Struggling with One to One relationships

When using the CBVs, the error actually made me consider that I should
be using UpdateView rather than CreateView, but that doesn't work - I
don't want to change the underlying Job, I just want to add another,
as yet non existent, o2o to it.

Cheers
L.

On 18 September 2014 09:48, Lachlan Musicman <datakid@gmail.com> wrote:
> I get the same error across CBV and FBV when trying to create the
> second o2o relationship to the super/concrete model Job
>
> [2014-09-17 11:49:26] null value in column "date_opened" violates
> not-null constraint
>
> "date_opened" is a var on the Job model. I don't understand why it's
> trying to create a new Job when I've already assigned one?
>
> Details:
>
> When I moved from CBV to FBV I explicitly created the secondary Job,
> then assigned the o2o var to the job in question.
>
> My urls are modelled on the job, to make passing the job easier. The
> two "add" functions here are for adding the second o2o relationship:
>
> url(r'^job/(?P<slug>[-\w]+)/workshop/$',
> views.WorkshopJobDetail.as_view(), name='wsjob_detail'),
> url(r'^job/(?P<slug>[-\w]+)/workshop/add/$', views.workshop_add, name='ws_add'),
>
> url(r'^job/(?P<slug>[-\w]+)/engineering/$',
> views.EngineeringJobDetail.as_view(), name='enjob_detail'),
> url(r'^job/(?P<slug>[-\w]+)/engineering/add/$', views.engineering_add,
> name='en_add'),
>
> In the view:
>
> def workshop_add(request, slug):
> job = Job.objects.get(slug=slug)
> if request.method == 'POST':
> form = WSAddForm(request.POST)
> if form.is_valid():
> workshop_job = WorkshopJob()
> workshop_job = job
> workshop_job.quote_required = form.cleaned_data['quote_required']
> workshop_job.invoice_number = form.cleaned_data['invoice_number']
> workshop_job.part = form.cleaned_data['part']
> workshop_job.serial_or_lot = form.cleaned_data['serial_or_lot']
> workshop_job.serial_or_lot_number =
> form.cleaned_data['serial_or_lot_number']
> workshop_job.work_order = form.cleaned_data['work_order']
> workshop_job.save()
> return redirect(workshop_job)
> else:
> form = WSAddForm()
> return render(request, 'jobs/workshop_form.html', {'form':form, 'object':job})
>
>
>
>
>
>
> On 18 September 2014 01:13, Collin Anderson <cmawebsite@gmail.com> wrote:
>> what happens when you try?
>>
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>
>
> --
> You have to be really clever to come up with a genuinely dangerous
> thought. I am disheartened that people can be clever enough to do that
> and not clever enough to do the obvious thing and KEEP THEIR IDIOT
> MOUTHS SHUT about it, because it is much more important to sound
> intelligent when talking to your friends.
> This post was STUPID.
> -----------------------------------------------------------------------------------------------------------
> The Most Terrifying Thought Experiment of All Time
> http://www.slate.com/articles/technology/bitwise/2014/07/roko_s_basilisk_the_most_terrifying_thought_experiment_of_all_time.html



--
You have to be really clever to come up with a genuinely dangerous
thought. I am disheartened that people can be clever enough to do that
and not clever enough to do the obvious thing and KEEP THEIR IDIOT
MOUTHS SHUT about it, because it is much more important to sound
intelligent when talking to your friends.
This post was STUPID.
-----------------------------------------------------------------------------------------------------------
The Most Terrifying Thought Experiment of All Time
http://www.slate.com/articles/technology/bitwise/2014/07/roko_s_basilisk_the_most_terrifying_thought_experiment_of_all_time.html

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