我有一种与多种指标相关的疾病。我的问题是,每当我保存我的指标并从我的下拉列表中选择一种疾病时,一种新疾病将写入链接到指标的数据库。
我想有一个从我的疾病表中采样的下拉菜单。用户选择疾病并输入指标。指标保存在指标表中,其中包含疾病表中疾病的链接(而不是在疾病表中编写新疾病)。
我用它作为参考参考:http://charlesleifer.com/blog/djangos-inlineformsetfactory-and-you/
Views.py
def drui(request):
if request.method == "POST":
diseaseForm = DiseaseForm(request.POST)
if diseaseForm.is_valid():
new_disease = diseaseForm.save(commit=False)
indicatorInlineFormSet = IndicatorFormSet(request.POST, instance=new_disease)
if indicatorInlineFormSet.is_valid():
new_disease.save()
indicatorInlineFormSet.save()
return HttpResponseRedirect(reverse(valdrui))
else:
diseaseForm = DiseaseForm()
indicatorInlineFormSet = IndicatorFormSet(instance=Disease())
return render_to_response("drui.html", {'diseaseForm': diseaseForm, 'indicatorInlineFormSet': indicatorInlineFormSet},context_instance=RequestContext(request))
forms.py
class DiseaseForm(forms.ModelForm):
disease = forms.ModelChoiceField(queryset=Disease.objects.all())
class Meta:
model = Disease
class IndicatorForm(forms.ModelForm):
class Meta:
model = Indicator
IndicatorFormSet = inlineformset_factory(Disease,
Indicator,
can_delete=False,
extra=MAX_INDICATORS)
HTML:
{{ diseaseForm.as_table }}
{{ indicatorInlineFormSet.as_table }}
更新 我使用Mariodev的建议让它工作,但只有我输入PK = 1或其他一些硬编码的数字。如何通过用户选择的PK?选择来自PK = id的疾病表。这是我的views.py:
的片段def drui(request, id):
if request.method == "POST":
disease = get_object_or_404(Disease, pk=id)
diseaseForm = DiseaseForm(request.POST, instance=disease)
if diseaseForm.is_valid():
new_disease = diseaseForm.save(commit=False)
indicatorInlineFormSet = IndicatorFormSet(request.POST, instance=new_disease)
if indicatorInlineFormSet.is_valid():
new_disease.save()
indicatorInlineFormSet.save()
return HttpResponseRedirect(reverse(valdrui))
当我点击提交时,我收到此错误:drui()正好接受2个参数(给定1个)。有什么建议吗?
答案 0 :(得分:0)
是的,我的第一个建议是错误的。您应该做的是在编辑视图中显示inlineformset,这样您就可以使用现有对象创建DiseaseForm实例。所以而不是:
diseaseForm = DiseaseForm(request.POST)
你这样做:
disease = get_object_or_404(Disease, pk=disease_id)
diseaseForm = DiseaseForm(request.POST, instance=disease)
来自网址的疾病