Joining Models And Passing To Template - django

Question

I have multiple related models and on a single page I need to access data from different models on a variety of conditions. Most of this data is accessed without a form as only a few fields need to be manipulated by the user.
To give you an idea of how interconnected my Models are:
class User(models.Model):
first = models.ManyToManyField(First)
second= models.ManyToManyField(Second)
class First(models.Model):
[...]
class Second(models.Model):
first = models.ManyToManyField(First)
class Third(models.Model):
first = models.ForeignKey(First)
class Fourth(models.Model):
user = models.ForeignKey(User)
second = models.ForeignKey(Second)
third = models.ForeignKey(Third)
class Fifth(models.Model):
fourth = models.ForeignKey(Fourth)
class Sixth(models.Model):
fifth = models.ForeignKey(Fifth)
I'm having a lot of difficulty passing this data to my template and displaying it in efficiently. I originally displayed it to the user in a horrendous way as I just wanted to see if my data was accessible/displaying properly. This is an example of some of the dodgy code I used to test that my data was being passed properly:
{% for second in user.second.all %}
{% for first in second.first.all %}
[...]
{% for fourth in user.fourth.all %}
[...]
{% if fourth.first_id == first.id and fourth.second_id == second.id %}
{% if fourth.checked == True %}
[...]
{% else %}
[...]
{% endif %}
{% endif %}
{% endfor %}
{% endfor %}
{% endfor %}
[...]
Isn't it an abomination, and it goes deeper. Now I am trying to reformat this. I know that my processing should be done within my view rather than my template. The thing is I can't just filter out a lot of the data in my views as I need a lot of it in the template at different times (eg I might have 20 pieces of data in a model and I need to access all 20, but some when the id match, some when the id and type match etc. It's a lot of template side logic - I think that's bad).
This is the kind of thing I have been trying to do so far but am having no luck:
second = Second.objects.filter(user__id=user.id) .select_related('First')
Any help with how to join/pass all these models to my view and access the data without the nested nested loops, or even just pointers on how to approach this would be appreciated. I's also unsure if I should be aiming to join as many models as possible then pass into my view or pass many separate models.
Thank you.

Answer 1

you are serializer the data use a drf serializer you will need to use a nested serializer
example for nested serializer
class HospitalsSerializer(serializers.ModelSerializer):
class Meta:
model = Hospitals
fields = '__all__'
class HealthProductSerializers(serializers.ModelSerializer):
hospital_list = HospitalsSerializer(many=True)
class Meta:
model = HealthProduct
exclude = ("created_at", "updated_at")