Soumettre les données du jeu de formulaires en utilisant des vues basées sur les classes

Question

Je crée un jeu de formulaires avec django qui contient des informations sur les enfants. J'utilise createview (CBV) pour cela. Le formulaire s'affiche correctement, il a la fonctionnalité d'ajouter des enfants et de supprimer des enfants, tout fonctionne correctement. Mais, lorsque je clique sur submit, form_invalid est appelé à la place de form_valid . Pour connaître ce problème, j'ai imprimé form.errors et j'ai vu les erreurs suivantes

<ul class="errorlist"><li>deal_id<ul class="errorlist"><li>This field is required.</li></ul></li><li>child_name<ul class="errorlist"><li>This field is required.</li></ul></li><li>son_or_daugher<ul class="errorlist"><li>This field is required.</li></ul></li><li>child_age<ul class="errorlist"><li>This field is required.</li></ul></li><li>child_education<ul class="errorlist"><li>This field is required.</li></ul></li><li>child_occupation<ul class="errorlist"><li>This field is required.</li></ul></li></ul>

Voici mon code

Modèle :-

{% extends "forms_app/base.html" %}
{% load static %}

{% block title %}{% endblock %}
{% block content %}
    <h2>Profile</h2>
    <hr>
    <div class="col-md-4">
        <form action="" method="post">{% csrf_token %}
            <table class="table">
                {{ childrens.management_form }}

                {% for form in childrens.forms %}
                    {% if forloop.first %}
                        <thead>
                        <tr>
                            {% for field in form.visible_fields %}
                                <th>{{ field.label|capfirst }}</th>
                            {% endfor %}
                        </tr>
                        </thead>
                    {% endif %}
                    <tr class="{% cycle row1 row2 %} formset_row">
                        {% for field in form.visible_fields %}
                            <td>
                                {# Include the hidden fields in the form #}
                                {% if forloop.first %}
                                    {% for hidden in form.hidden_fields %}
                                        {{ hidden }}
                                    {% endfor %}
                                {% endif %}
                                {{ field.errors.as_ul }}
                                {{ field }}
                            </td>
                        {% endfor %}
                    </tr>
                {% endfor %}
            </table>
            <input type="submit" value="Submit"/> <a href="">back to the list</a>
        </form>
    </div>
    <script src="//ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
    <script src="{% static 'forms_app/jquery.formset.js' %}"></script>
    <script type="text/javascript">
        $('.formset_row').formset({
            addText: 'Add Children',
            deleteText: 'Remove',
            prefix: 'familymember_set'
        });
    </script>
{% endblock %}

Afficher le code

class ChildrenView(CreateView):
    template_name = 'forms_app/children_form.html'
    form_class = ChildrenForm
    success_url = reverse_lazy('forms_app:deal-entering')

    # fields = ['name','class']

    def get_context_data(self, **kwargs):
        data = super(ChildrenView, self).get_context_data(**kwargs)
        if self.request.POST:
            data['childrens'] = ChildrenFormSet(self.request.POST)
        else:
            print('child form initial data')
            initial_list = []
            try:
                print('its going on')
                for i in range(self.request.session['children_count']   ):
                    print('still going on')
                    for field in self.fields:
                        initial_list.append(self.request.session[i + field])
                        data['childrens'] = ChildrenFormSet(initial = initial_list)
            except:
                data['childrens'] = ChildrenFormSet()
            # data['childrens'].extra = self.request.session['children_count']
        return data

    def form_valid(self, form):
        if form.is_valid():
            count = 0
            for f in form:
                for field in ['deal_id','child_name','son_or_daugher','child_age','child_education','child_occupation']:
                    self.request.session[count + field] = f.cleaned_data[field]
                count += 1

            self.request.session['children_count'] = count

            for i in range(count):
                for field in ['deal_id','child_name','son_or_daugher','child_age','child_education','child_occupation']:
                    print(self.request.session[i + field])

            for field in self.fields:
                self.request.session[field] = form.cleaned_data[field]

            self.request.session['valid_children'] = True

        return super(ChildrenView, self).form_valid(form)

    def form_invalid(self,form):

        if form.is_valid():
            pass
        print(form.errors)
        print('form invalid')
        return super(ChildrenView, self).form_invalid(form)

Code du formulaire

class ChildrenForm(forms.ModelForm):
    class Meta:
        model = Children
        fields = '__all__'

    def clean(self):
        print(self.cleaned_data)

ChildrenFormSet = modelformset_factory(Children,fields = '__all__',extra=1)

J'ai lu plusieurs messages sur StackOverflow. J'ai parcouru les documents de Django mais je ne parviens toujours pas à comprendre le problème. Veuillez m'aider.

Voici une capture d'écran de mon formulaire

Si vous avez un problème de compréhension, veuillez commenter, je vous répondrai très rapidement.