Show only second field of the field choises

Question

In my model I have an option list and when I display it in the template it appears like this: "("D", "Slow")" and I would like it to be displayed only "("Slow down")".

Currently

As it should be

Model.py

class Perfil(models.Model):
    vel = (
        ("D", "Devagar",),
        ("N", "Normal"),
        ("R", "Rápido "),
        ("S", "Super Rapido (Cuidado!)"),
    )

    velocidade = models.CharField(max_length=1, choices=vel, null=True, blank=True, verbose_name='Velocidade')

py views.

from django.shortcuts import render
from .models import Perfil

def account(request):
    user_id = request.user.id
    perfil = Perfil.objects.get(usuario_id=user_id)
    
    return render(request, 'core/account.html', {'nome': user_id, 'dados':perfil })

home html.

<select class="form-control select2 select2-hidden-accessible" style="width: 100%;" data-select2-id="1" tabindex="-1" aria-hidden="true">
    {% for opcao in dados.vel %}
        <option data-select2-id="{{opcao}}">{{ opcao }}</option>
    {% endfor %}
</select>

Answer 1

As demonstrated in documentation of template for you can unpack (unpacking) the items you are iterating on.

As in your case, each item is a tuple, you could unpack the tuple into two values and use them:

<select class="form-control select2 select2-hidden-accessible" style="width: 100%;" data-select2-id="1" tabindex="-1" aria-hidden="true">
    {% for opcao_id, opcao_valor in dados.vel %}
        <option data-select2-id="{{ opcao_id }}">{{ opcao_valor }}</option>
    {% endfor %}
</select>

Answer 2

When you do it on the option you’re iterating inside a tuple of tuples, so I imagine you want to do it like this:

{% for opcao in dados.vel %}
    <option data-select2-id="{{opcao.0 }}">{{ opcao.1 }}</option>
{% endfor %}

Option.0 takes the first item of the tuple so in the case of the tuple ("D","Slow") it will take the "D" and 1 takes the second item of the tuple, in the case of the "Slow down"".