Create a queryset that automatically queries onetoone objects
I'm building a django application that has a model with multiple OneToOne relationships:
class MyApp(BaseModel):
site_1 = models.OneToOneField(
Site, on_delete=models.CASCADE, related_name="site1", null=True
)
site_2 = models.OneToOneField(
Site, on_delete=models.CASCADE, related_name="site2", null=True
)
site_3 = models.OneToOneField(
Site, on_delete=models.CASCADE, related_name="site3", null=True
)
def __str__(self):
return self.title
class Meta:
verbose_name = "Main Application"
verbose_name_plural = "Main Application"
When I create a queryset using MyApp.objects.all() it returns an object with just the primary keys:
{
"model": "mesoamerica.mesoamericaapp",
"pk": 1,
"fields": {
"site_1": 1,
"site_2": 2,
"site_3": 3
}
However, I'd like to create a queryset that grabs each of the Site models by pk and attaches them to the query, rather than having to do that myself. Is there a queryset that will do this?
You can do this:
def my_app_data(request):
queryset = MyApp.objects.prefetch_related('site1', 'site2', 'site3').all()
# Serialize queryset to JSON
data = serialize('json', queryset)
# Return JSON response
return JsonResponse(data, safe=False)
but if you wanna write serializer classes for your site and myapp model, check document: https://www.django-rest-framework.org/tutorial/1-serialization/