How to iterate in subitems of a object in a django template - django

Question

views.py:
from django.views import generic
from .models import Servico
class ServicoView(generic.DetailView):
model = Servico
context_object_name = 'servico'
template_name = 'servico.html'
models.py:
from djongo import models
class PublicoAlvo(models.Model):
def __str__(self):
return ''
alvo1 = models.CharField(max_length = 126)
alvo2 = models.CharField(max_length = 126, blank = True, default = '')
class Meta:
abstract = True
class Servico(models.Model):
t_id = models.CharField(primary_key = True, unique = True, max_length = 252)
alvos = models.EmbeddedField(
model_container = PublicoAlvo
)
urls.py:
from django.urls import path
from . import views
urlpatterns = [
path('servicos/<slug:pk>/', views.ServicoView.as_view(), name = 'servico')
]
I think these are the relevant files in my Django app folder. Back to the question, how can I iterate over the values that are going to be stored in servico.alvos in my template? If I want to show t_id, I just use {{ servico.t_id }} and it works fine. I could write something like:
<HTML1>
{{ servico.alvos.alvo1 }}
<HTML2>
<HTML1>
{{ servico.alvos.alvo2 }}
<HTML2>
And that would show the values that I want, but would make things uglier, since I would have to write a lot of repeated standard HTML (that I indicated as and ) to format each value inside servico.alvos, and more limited (imagine if I decide to change the model and add more 6 values in the PublicoAlvo class). I tried the following:
{% for alvo in servico.alvos.all %}
<HTML1>
{{ alvo }}
<HTML2>
{% endfor %}
and
{% for alvo in servico.alvos.items %}
<HTML1>
{{ alvo }}
<HTML2>
{% endfor %}
But I get nothing printed. When I try:
{% for alvo in servico.alvos %}
<HTML1>
{{ alvo }}
<HTML2>
{% endfor %}
I get 'PublicoAlvo' object is not iterable
Is there a way to get what I want using a loop in my template or changing something in my models.py?

Answer 1

Try
{{ servico.t_id }}
{{ servico.alvos }}
Then in your models.py
class PublicoAlvo(models.Model):
def __str__(self):
# Option 1: List all <alvo> fields
return ", ".join(
[
self.alvo1,
self.alvo2,
]
)
# Option 2: If you don't like manually listing each <alvo> field
# return ", ".join(
# [
# getattr(self, f"alvo{index}") for index in range(1, 3)
# ]
# )
...
This might give something like
The value for alvo1, While for alvo2 is this one
Update
You could also try
{% for key, value in servico.alvos.items %}
{% if key|slice:":4" == "alvo" %}
{{ value }}<br>
{% endif %}
{% endfor %}
This might show something like
The value for alvo1
While for alvo2 is this one

Answer 2

Based on the first answer of Niel Godfrey Ponciano, I was able to solve the problem.
models.py:
from djongo import models
class PublicoAlvo(models.Model):
def __str__(self):
return ''
def list(self):
return [value for key, value in self.__dict__.items() if not key.startswith('_')]
alvo1 = models.CharField(max_length = 126)
alvo2 = models.CharField(max_length = 126, blank = True, default = '')
class Meta:
abstract = True
class Servico(models.Model):
t_id = models.CharField(primary_key = True, unique = True, max_length = 252)
alvos = models.EmbeddedField(
model_container = PublicoAlvo
)
And then I can iterate over servico.alvos.list using a for in the template just by adding the list method that returns the relevant fields (variables) values in my class.