from sql to Django... i don't understand - sql

Question

i have 3 models (protocollo_pratica, protocollo_soggetto and protocollo_anaprat) and i need extract for each protocollo_pratica a list of soggetti with a specific "tipo" but i don't understand how to make this in django views. Thank you so much for your help.
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this is my models.py :
`
from django.db import models
# Create your models here.
class Soggetto(models.Model):
cognome = models.CharField(max_length=100, null=True)
nome = models.CharField(max_length=100, null=True)
comune_nascita = models.CharField(max_length=100, null=True)
data_nascita = models.DateField(null=True)
codice_fiscale = models.CharField(max_length=16, null=True)
def __str__(self):
"""String for representing the MyModelName object (in Admin site etc.)."""
return self.nome
class Pratica(models.Model):
oggetto = models.CharField(max_length=100)
anagrafe = models.ManyToManyField(Soggetto,
through='Anaprat',
through_fields=('pratica', 'soggetto'),)
def __str__(self):
"""String for representing the MyModelName object (in Admin site etc.)."""
return self.oggetto
class Anaprat(models.Model):
tipo=models.CharField( max_length=50)
pratica=models.ForeignKey("Pratica", related_name='pratiche', on_delete=models.CASCADE)
soggetto=models.ForeignKey("Soggetto", related_name='soggetti', on_delete=models.CASCADE)
def __str__(self):
"""String for representing the MyModelName object (in Admin site etc.)."""
return f"{self.tipo, self.soggetto}"`
and this is my sql query :
`SELECT
p.id,
pa.tipo tipo,
ps.cognome,
ps.nome,
ps.data_nascita,
ps.comune_nascita
from
(SELECT
id id
from protocollo_pratica pp ) p,
protocollo_anaprat pa
left JOIN protocollo_soggetto ps
on ps.id=pa.soggetto_id
where p.id=pa.pratica_id`