Django multiple forms for different models

I'm new to Django, but I've been stuck with it because I haven't been able to solve my problem for a day.

I have to create a form with a lot of fields. The fields are from different models and I want to save them all at once. I want to display it in a slick way so that the user experience will be better and not overwhelmed by a lot of populated fields. The smooth part is not a problem. My problem is rendering multiple forms in multiple divs on the same page. In this case I want to display not only the candidate details but also the candidate details form.

Here my actual code only works for one valid form.

form:

class CandidateApplicationForm(ModelForm):
position = forms.ChoiceField(choices=POSITION, widget=forms.RadioSelect)

class Meta:
    model = Candidate
    fields = ['firstName',
              'lastName',
              'mailAddress',
              'address',
              'city',
              'country',
              'nationality',
              'position',
              ]
    widgets = {
        'firstName': forms.TextInput(attrs={'class': 'input'}),
        'lastName': forms.TextInput(attrs={'class': 'input'}),
        'address': forms.TextInput(attrs={'class': 'input'}),
        'city': forms.TextInput(attrs={'class': 'input'}),
        'nationality': forms.TextInput(attrs={'class': 'input'}),
        'Type of programme': forms.TextInput(attrs={'class': 'input'}),
    }

CandidateDetailsForm（ModelForm）类：

class Meta:
    model = CandidatesDetail
    fields = ['birthPlace',
              'birthDate',
              'nationality',
             ]

View:

类RegisterCandidate：

def __init__(self):
    self.method = None

def candidateapply(request):

    apply = candidateregistrationform.CandidateApplicationForm()

    if request.method == 'POST':
        form_candidate = candidateregistrationform.CandidateApplicationForm(request.POST)
        if form_candidate.is_valid():

            candidate = form_candidate.save(commit=False)
            candidate.save()

        else:
            apply = candidateregistrationform.CandidateApplicationForm()
    return render(request,
                  'candidateapplication.html',
                  {'form': apply})


def candidatedetails(request):
    apply = candidateregistrationform.CandidateDetailsForm()

    if request.method == 'POST':
        form_candidatedetails = candidateregistrationform.CandidateDetailsForm(request.POST)
        if form_candidatedetails.is_valid():

            candidate = form_candidatedetails.save(commit=False)
            candidate.save()

        else:
            apply = candidateregistrationform.CandidateApplicationForm()
    return render(request,
                  'candidateapplication.html',
                  {'form': apply})

Japanese HTML:

{% csrf_token %}
  {% for field in form %}
  <p>
    {{ field.label_tag }}<br>
    {{ field }}
    {% for error in field.errors %}
      <p style="color: red">{{ error }}</p>
    {% endfor %}

  {% endfor %}

thank you for your help.