You shouldn't give the PK of new objects, leave that to Django. If photo_id is the PK of Photo, don't set it, Django will on save.
If the same goes for Contest, then do a "contest = Contest()" - create a new contest - and assign it to the photo "photo.contest = contest", then "photo.save" On Mon, Nov 27, 2017 at 5:56 PM, Kubilay Yazoğlu <[email protected]> wrote: > Hi. I'm trying to create a form to construct an object for my Photo class. > All of the objects fields except the photo itself will be invisible to the > user. So, the only thing can be seen in the form is the button to select > and upload the photo. > > There is no problem with creating the form page. The problem is, giving > the initial values for the rest of the fields. > This is the relevant code in my view file: > > > > if request.method =='POST': > data = {'photo_id': get_latest_photo_id_plusone(), > 'contest_id': get_latest_contest_id_plusone(), > 'ownername': 'SUMMERSON', > } > form=PhotoForm(request.POST, initial=data) > if form.is_valid(): > Photo = form.save() > else: > form = PhotoForm() > > > And the relevant functions: > > > > def get_latest_photo_id_plusone(): > max_rating = > Photo.objects.all().aggregate(Max('photo_id'))['photo_id__max'] > return max_rating+1 > > > def get_latest_contest_id_plusone(): > max_rating > =Photo.objects.all().aggregate(Max('contest_id'))['contest_id__max'] > return max_rating+1 > > > > The error arises when I click on the send button after I select the image. > It says: > > IntegrityError at /photo/create/ > NOT NULL constraint failed: photo_photo.contest_id_id > > But I've given the contest_id value. Haven't I? Where is the problem and > how can I fix it? > > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/django-users. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/django-users/57db225c-41bf-43d2-b9d8-ffb3174cddc7%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/57db225c-41bf-43d2-b9d8-ffb3174cddc7%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/django-users. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CA%2BFDnhJM1k8kk4ZudQsaH9QpsnAAHHHDbMYwLB09oTT0L2bfNg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
