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Django Class Based Views and Inline Formset Example
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from django.forms import ModelForm | |
from django.forms.models import inlineformset_factory | |
from models import Sponsor, Sponsorship | |
class SponsorForm(ModelForm): | |
class Meta: | |
model = Sponsor | |
class SponsorshipForm(ModelForm): | |
class Meta: | |
model = Sponsorship | |
SponsorShipsFormSet = inlineformset_factory(Sponsor, Sponsorship, | |
form=SponsorshipForm, extra=2) |
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from django.db import transaction | |
from django.views.generic import CreateView | |
from forms import SponsorForm, SponsorShipsFormSet | |
class CreateSponsor(CreateView): | |
form_class = SponsorForm | |
template_name = 'sponsor_form.html' | |
def get_context_data(self, **kwargs): | |
data = super(CreateSponsor, self).get_context_data(**kwargs) | |
if self.request.POST: | |
data['sponsorships'] = SponsorShipsFormSet(self.request.POST) | |
else: | |
data['sponsorships'] = SponsorShipsFormSet() | |
return data | |
def form_valid(self, form): | |
context = self.get_context_data() | |
sponsorships = context['sponsorships'] | |
with transaction.commit_on_success(): | |
form.instance.created_by = self.request.user | |
form.instance.updated_by = self.request.user | |
self.object = form.save() | |
if sponsorships.is_valid(): | |
sponsorships.instance = self.object | |
sponsorships.save() | |
return super(CreateSponsor, self).form_valid(form) | |
def get_success_url(self): | |
return reverse('sponsors') |
SponsorForm get saved even though SponsorShipsFormSet are invalid
Maybe this update helps:
def form_valid(self, form):
context = self.get_context_data()
sponsorships = context['sponsorships']
with transaction.atomic():
form.instance.created_by = self.request.user
form.instance.updated_by = self.request.user
self.object = form.save()
if sponsorships.is_valid():
sponsorships.instance = self.object
sponsorships.save()
return super(CreateSponsor, self).form_valid(form)
What the hell is SponsorMixin?
He's not actually using that in his code but it's basically an input parameter.
Do you guys know how to implement update_or_create method for inline model to exclude possibility of adding 2 or more similar instances?
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This thing is old now
module 'django.db.transaction' has no attribute 'commit_on_success'