Need to save all answers from a user on every questions related on a specific Quiz

Question

I want to save after submitting all answers from a user of all questions related on a specific Quiz. The logical is : I've got Quiz, Questions. Question car link to Quiz and when I choose a quiz all questions link to are shown on webpage with javascript (design). After submiting I need to get all checkbox checked and save into UserResponse.

Models

class Question(models.Model):
    objects = None
    question = models.CharField(max_length=200, null=True)
    description = models.CharField(max_length=255, null=True)
    question_pic = models.ImageField(upload_to='poll/', storage=fs, null=True)
    choices = models.ManyToManyField(Answer, related_name='QuestionsChoices')
    mandatory = models.BooleanField(default=True)
    multiple = models.BooleanField(default=False)
    randomize = models.BooleanField(default=False)

class Quiz(models.Model):
    STATUS_CHOICES = (
        (1, 'Draft'),
        (2, 'Public'),
        (3, 'Close'),
    )
    nom = models.CharField(max_length=200, null=False)
    theme = models.ForeignKey(Theme, null=False, on_delete=models.CASCADE)
    questions = models.ManyToManyField(Question, related_name='Quizs')
    status = models.IntegerField(choices=STATUS_CHOICES, default=1)
    published = models.DateTimeField(null=True)
    date_added = models.DateTimeField(auto_now_add=True)
    date_modified = models.DateTimeField(auto_now_add=True)

class QuizInstance(models.Model):
    objects = None
    """
    A combination of user response and a quiz template.
    """
    player = models.ForeignKey(User, on_delete=models.CASCADE)
    quiz = models.ForeignKey(Quiz, on_delete=models.CASCADE)
    start_quiz = models.DateTimeField(auto_now_add=True)
    score = models.IntegerField(default=0)
    complete = models.BooleanField(default=False)


class UserResponse(models.Model):
    objects = None
    """
    User response to a single question.
    """
    quiz_instance = models.ForeignKey(QuizInstance, on_delete=models.CASCADE)
    question = models.ForeignKey(Question, on_delete=models.CASCADE)
    response = models.ManyToManyField(Answer, related_name="UserResponses")
    time_taken = models.DateTimeField(auto_now_add=True)
    time_taken_delta = models.DateTimeField(blank=True)

VIEWS (to show all questions from selected quiz)

def show_quiz(request, quiz_id):
    try:
        quiz = Quiz.objects.get(pk=quiz_id)
    except:
        messages.error(request, "Ce quiz n'existe pas ;)")
        return redirect('poll:show-list')
    context = {
        'quiz': quiz,
    }
    return render(request, "poll/show_quiz.html", context)

# IF QUIZ SUBMITED, HERE I NEED TO SAVE ALL ANSWER GAVE BY USER INTO UserResponse
def answer_quiz(request):
    context = {}

    if request.method == 'POST':
        quiz = Quiz.objects.get(pk=request.POST.get('id_quiz'))
        player = request.user
        quiz_player = QuizInstance.objects.filter(player=player, quiz=quiz)
        if len(quiz_player) == 0:
            quiz_instance = QuizInstance.objects.create(player=player, quiz=quiz)
        else:
            context = {
                'error': True,
            }
    return render(request, "poll/answer_quiz.html", context)

TEMPLATES (HTML) [...]

{% for question in quiz.questions.all %}
<fieldset class="p-4" style="max-width:720px; margin:0 auto;">
                    <question>
                        {{ forloop.counter }} - {{ question.question }}
                        {% if question.question_pic != "" and question %}
                        <div class="col-12 my-3 rounded-3" id="picQuestionDiv">
                            <img class="img-thumbnail rounded-3 p-2" src="/media/{{ question.question_pic }}" width="200" />
                        </div>
                        {% endif %}
                    </question>
                    <reponses class="d-grid gap-4" style="display:block !important; ">
                        {% if question|is_answer_pic %}
                            {% for reponse in question.choices.all %}
                            <input type="checkbox" hidden value="{{ reponse.id }}" name="reponse" id="reponse_{{ reponse.id }}" />
                            <reponse style="width:calc(50% - 8px + 4px); text-align:left !important;" class="col-6 mb-2 btn btn-reponse reponse" data-id="reponse_{{ reponse.id }}">
                                <div class="d-flex align-items-center rounded-3">
                                {% if reponse.answer_pic %}
                                    <img class="card-img-top rounded-3 img-fluid mh-100 cover text-center" style="" src="/media/{{ reponse.answer_pic }}">
                                {% else %}
                                    <i class="card-img-top rounded-3 mt-2 img-fluid mh-100 cover bi bi-eye-slash fs-1 text-center"></i>
                                {% endif %}
                                </div>
                                <div style="display:inline-block">
                                    <span class="border border-secondary p-0 px-2 rounded-3 letter-reponse-pic bg-light text-secondary" style="">{{ forloop.counter0|show_letter }}</span>
                                    <span class="">{{ reponse.answer }}</span>
                                </div>
                            </reponse>
                            {% endfor %}
                        {% else %}
                            {% for reponse in question.choices.all %}
                            <reponse style="width:calc(50% - 8px + 4px);" class="col-6 mb-2">
                                <div class="d-flex align-items-center rounded-3 border btn btn-outline-reponse p-2 reponse mb-2">
                                    <span class="border border-secondary p-0 px-2 rounded-3 letter-reponse bg-light text-secondary">{{ forloop.counter0|show_letter }}</span>{{ reponse.answer }}
                                </div>
                            </reponse>
                            {% endfor %}
                        {% endif %}
                    </reponses>
                    <link class="" style="display: block;">

                    {% if not forloop.first %}
                    <a class="btn btn-secondary prev">Précédente</a>
                    {% endif %}

                    {% if not forloop.last %}
                    <a class="btn btn-secondary next">Suivante</a>
                    {% endif %}

                    {% if forloop.last %}
                    <button type="submit" class="btn btn-success next">Terminé !</button>
                    {% endif %}
                    </link>
                </fieldset>
{% endfor %}

I know my method is not very clean ... I use form for Create Question, Quiz, etc ... but for showing Question I can't because need to show specific kind of checkbox if image, and other if not ... Anyway, here my need it just to retrive from POST submitting all data from quiz send by user And save it :)

Thanks for your help