urls.py

from django.conf.urls import url

from . import views

app_name = 'ratings'

urlpatterns = [
    url(r'^index/$', views.EnquiryListView.as_view(), name='list'),
    url(r'^detail/(?P<pk>[\d]+)/$', views.EnquiryDetailView.as_view(), name='detail'),
    url(r'prepare/$', views.EnquiryCreatePrepareView.as_view(), name='prepare'),
    url(r'new/$', views.EnquiryCreateView.as_view(), name='create'),
    url(r'new/(?P<number>[\d]+)/$', views.EnquiryCreateView.as_view(), name='create-many'),
    url(r'^$', views.EnquiryListView.as_view()),
]

views.py

from django.contrib.auth.mixins import LoginRequiredMixin
from django.views import generic
from django.shortcuts import redirect
from extra_views import InlineFormSet, CreateWithInlinesView

from ratings import models, forms


class EnquiryDetailView(LoginRequiredMixin, generic.DetailView):
    """
    """
    model = models.Enquiry


class EnquiryListView(LoginRequiredMixin, generic.ListView):
    """
    """
    model = models.Enquiry


class EnquiryCreatePrepareView(LoginRequiredMixin, generic.FormView):
    """
    """
    template_name = 'ratings/enquiry_create_cardinality.html'
    form_class = forms.CardinalityForm

    def form_valid(self, form):
        number = form.cleaned_data['number']
        return redirect('ratings:create', number=number)


class DataInline(InlineFormSet):
    model = models.Data
    fields = ['kind', 'value']
    extra = 3


class EnquiryCreateView(LoginRequiredMixin, CreateWithInlinesView):
    """
    """
    model = models.Enquiry
    fields = ['subject']
    inlines = [DataInline]