Django Nested formsets for models - django

Question

I'm writing a program to store analyses for patient and I need to make a form with nested forests with next scheme
Each patient has an analyses results sheet
Each result sheet has date, patient (foreign key) and set of analyses values
Each set of analyses values has strict number and strict types of analyses
Each type of analyse has it's value, name and units
For example I want to create John's analyse result sheet for blood
Patient: John
Date: 10.02.23
Set of values: 'Blood analysis'
Red blood cells: 3,23 10^9
Haemoglobin: 124 g/l
I've made models
patient/models.py
class Patient(models.Model):
hist_number = models.IntegerField(unique=True, verbose_name='Номер истории болезни')
last_name = models.CharField(max_length=32, verbose_name='Фамилия')
analysis/models.py
class PatientAnalysisResultSheet(models.Model):
an_number = models.PositiveBigIntegerField(verbose_name='Номер исследования', unique=True)
date = models.DateField(verbose_name='Дата анализа')
time = models.TimeField(verbose_name='Время')
patient = models.ForeignKey('patient.Patient', verbose_name='Пациент', on_delete=models.CASCADE)
class AnalysisType(models.Model):
name = models.CharField(max_length=256, verbose_name='Исследование', unique=True)
measurement = models.CharField(max_length=10, verbose_name='Единицы измерения')
class PatientAnalysis(models.Model):
sheet = models.ForeignKey(PatientAnalysisResultSheet, on_delete=models.CASCADE)
analysis = models.ForeignKey(AnalysisType, verbose_name='Лабораторный показатель',
on_delete=models.CASCADE)
value = models.FloatField(verbose_name='Значение')
So I googled about formsets and now did next steps:
views.py
from django.contrib import messages
from django.http import HttpResponseRedirect
from django.urls import reverse
from django.views.generic import FormView
# Create your views here.
from django.views.generic.detail import SingleObjectMixin
from analysis.forms import PatientAnSheetFormset
from patient.models import Patient
class PatientAnSheet(SingleObjectMixin, FormView):
model = Patient
template_name = 'analysis/patient_ansheets.html'
def get(self, request, *args, **kwargs):
self.object = self.get_object(queryset=Patient.objects.all())
return super().get(request, *args, **kwargs)
def post(self, request, *args, **kwargs):
self.object = self.get_object(queryset=Patient.objects.all())
return super().post(request, *args, **kwargs)
def get_form(self, form_class = None):
return PatientAnSheetFormset(**self.get_form_kwargs(), instance=self.object)
def form_valid(self, form):
form.save()
messages.add_message(
self.request,
messages.SUCCESS,
'Изменения сохранены добавлен!'
)
return HttpResponseRedirect(self.get_success_url())
def get_success_url(self):
return reverse('patient-detail', kwargs={'pk':self.object.pk})
forms.py:
from django.forms import inlineformset_factory
from patient.models import Patient
from analysis.models import PatientAnalysisResultSheet
PatientAnSheetFormset = inlineformset_factory(Patient, PatientAnalysisResultSheet, fields='__all__', extra=1)
But now I'm stuck as I don't know how to create a set of values and how to net it to the form. Appreciate