請幫忙！我正在嘗試通過主表單 pk 更新一組與主表單（項目信息）相關的表單集。創建表單工作正常，但我發現實現更新版本極其困難。這是另存為更新部分，我無法弄清楚formsets。主窗體正確更新數據庫。表單集只是創建新記錄而不是更新現有記錄。我不知道如何實例化表單集。這是代碼。view.py@login_requireddef edit_project(request): SampleInformationFormSet = formset_factory(SampleInformationForm, extra=1) DissolutionMethodsFormSet = formset_factory(DissolutionMethodsForm, extra=1) form = ProjectInformationForm(request.POST or None) si_formset = SampleInformationFormSet(request.POST or None, prefix='si') d_formset = DissolutionMethodsFormSet(request.POST or None, prefix='d') if request.method == 'POST': form = ProjectInformationForm(request.POST or None) si_formset = SampleInformationFormSet(request.POST or None, prefix='si') d_formset = DissolutionMethodsFormSet(request.POST or None, prefix='d') pi_pk = '' p = '' if form.is_valid(): pi_pk = form.cleaned_data['hd'] p = ProjectInformation.objects.get(pk=pi_pk) form = ProjectInformationForm(request.POST, instance=p) form.save() # This form saves correctly for si_form in si_formset: si_form.save() # I do not know how to attach an instance to these formsets for d_form in d_formset: d_form.save() messages.success(request, 'Your project has been updated!') return redirect('edit_project') else: pass form = ProjectInformationForm(request.POST or None) si_formset = SampleInformationFormSet(request.POST or None, prefix='si') messages.warning(request, 'There was an error saving your form.') study_id_select = list( ProjectInformation.objects.values('dissolution_study_id', 'id').filter()) context = {'form': form, 'si_formset': si_formset, 'd_formset': d_formset, 'study_id_select': study_id_select} return render(request, 'main/edit_project.html', context)
1 回答
侃侃無極
TA貢獻2051條經驗 獲得超10個贊
最后自己解決了。
@login_required
def edit_project(request):
SampleInformationFormSet = formset_factory(SampleInformationForm, extra=1)
DissolutionMethodsFormSet = formset_factory(DissolutionMethodsForm, extra=1)
form = ProjectInformationForm(request.POST or None)
si_formset = SampleInformationFormSet(request.POST or None, prefix='si')
d_formset = DissolutionMethodsFormSet(request.POST or None, prefix='d')
if request.method == 'POST':
form = ProjectInformationForm(request.POST or None)
si_formset = SampleInformationFormSet(request.POST or None, prefix='si')
d_formset = DissolutionMethodsFormSet(request.POST or None, prefix='d')
pi_pk = ''
p = ''
if form.is_valid():
pi_pk = form.cleaned_data['hd']
p = ProjectInformation.objects.get(pk=pi_pk)
form = ProjectInformationForm(request.POST, instance=p)
form.save()
si = p.sampleinformation_set.all() # All the Methods related to the instance
d = p.dissolutionmethods_set.all()
si_cnt = 0
for si_form in si_formset:
if si_form.is_valid():
update = si_form.save(commit=False)
update.pk = si[si_cnt].pk
update.save()
si_cnt += 1
d_cnt = 0
for d_form in d_formset:
if d_form.is_valid():
update = d_form.save(commit=False)
update.pk = d[d_cnt].pk
update.save()
d_cnt += 1
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