Django inlineformset被忽略的额外行

Question

我想在表单中添加额外的行，但它似乎被忽略。我有一个与django inlineformset_factory extra attribute being ignored?类似的设置，但没有基本型号。我试图实现该解决方案，但没有成功。有没有人有解决方案在我的表单中添加额外的行？

这里是我的代码：

Models.py

class Disease(models.Model): 
    disease = models.CharField(max_length=300, verbose_name="disease") 

    def __unicode__(self): 
     return self.disease 


class Indicator(models.Model): 
    relevantdisease = models.ForeignKey(Disease, verbose_name="disease")  
    indicator = models.CharField(max_length=300, verbose_name="indicators") 

    def __unicode__(self): 
     return self.indicator 

Forms.py

MAX_INDICATORS = 3 

class DiseaseForm(forms.ModelForm): 
    class Meta: 
     model = Disease 

class IndicatorForm(forms.ModelForm): 
    class Meta: 
     model = Indicator 

DiseaseFormSet = inlineformset_factory(Disease, 
    Indicator, 
    can_delete=False, 
    extra=MAX_INDICATORS, 
    form=DiseaseForm) 

IndicatorFormSet = inlineformset_factory(Indicator, 
    IndicatorValue, 
    can_delete=False, 
    extra=MAX_INDICATORS, 
    form=IndicatorForm) 

Views.py

def drui(request): 

if request.method == "POST": 

    indicatorForm = IndicatorForm(request.POST) 

    if indicatorForm.is_valid(): 
     new_indicator = indicatorForm.save() 
     diseaseInlineFormSet = DiseaseFormSet(request.POST, request.FILES, instance=new_indicator) 

     if diseaseInlineFormSet.is_valid(): 
     diseaseInlineFormSet.save() 
     return HttpResponseRedirect(reverse(something)) 

else: 
    indicatorForm = IndicatorForm() 
    diseaseInlineFormSet = DiseaseFormSet() 

return render_to_response("something.html", {'indicatorForm': indicatorForm, 'diseaseInlineFormSet': diseaseInlineFormSet},context_instance=RequestContext(request)) 

更新的代码： 现在，1疾病将与多个指标挂钩，我可以得到额外的线。然而，现在的问题是，只要我保存指标并从数据库中选择一种疾病，就会将新疾病写入与指标相关的数据库中。

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 }} 

Answer 1

在你看来，你有一个Indicator实例的单个IndicatorForm，具有沿DiseaseFormSet绑定多个Disease实例到那个单独的Indicator。然而在你的models.py中，你有一个ForeignKey，从Indicator到Disease，这意味着Indicator只能绑定到一个单一的Disease实例，而Disease实例可以有任意数量的Indicators。

为了解决这个问题，在ForeignKey从Indicator模型到模型Disease被改变，在Disease模型到模型Indicator是 - 或者，如果你想让它周围的其他方法，坚持使用，您对模型得到并使用IndicatorFormSet与一个单一的DiseaseForm。