Reusable field forms using crispy-forms

# Auxiliar functions
def normalize(cadena):
    return ''.join([x for x in normalize('NFD', cadena) if category(x) != 'Mn'])

def to_normal_text(cadena):
    return normalize(cadena.lower().strip().replace(' ', '_').replace('/',  '_'))

# Snippet functions
def add_form_field(form_map, form_list, name, form_type, post, initial=None):
    if not initial:
        initial = {}
    initial.update({'label': name})
    form_id = to_normal_text(name)
    form = form_type(post, initial=initial, prefix=form_id)
    form_map[form_id] = form
    form_list.append(form)

def form_map_is_valid(form_map):
    valid = True
    for form in form_map:
        if form_map[form]:
            valid = valid and form_map[form].is_valid()
    return valid

# Snippet: form.py

class MainVariableForm(forms.Form):
    #add this form for the csrf in case the form would be a post
    def __init__(self, *args, **kwargs):
        super(FormCompuestoPrincipal, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_tag = False

class FieldForm(forms.Form):
    def get_filter(self):
        if self.cleaned_data['field']:
            return {'key': self.fields['field'].label, 'value': self.cleaned_data['field']}
        return None

    def __init__(self, *args, **kwargs):
        super(FieldForm, self).__init__(*args, **kwargs)
        self.fields['field'].label = kwargs.get('initial').get('label')
        self.helper = FormHelper()
        self.helper.form_tag = False
        self.helper.disable_csrf = True

# Examples: forms.py

class SpecificFieldForm1(FieldForm):
    field = forms.ChoiceField(choices=[('choice_1', '1'),
                                       ('choice_2', '2'))

    def get_filter(self):
        if self.cleaned_data['field']:
            return {'key': self.fields['field'].label,
                    'value': dict(self.fields['field'].choices)[self.cleaned_data['field']]}
        return None

class SpecificFieldForm2(FieldForm):
    field = forms.CharField(required=False)

# Example: view.py

def some_view(request):
    form_list = []
    form_map = {}
    add_form_field(form_map, form_list, 'Field 1 Label', SpecificFieldForm1, request.GET)
    add_form_field(form_map, form_list, 'Field 2 Label', SpecificFieldForm2, request.GET)
    add_form_field(form_map, form_list, 'Field 3 Label', SpecificFieldForm1, request.GET)

    filters= None
    if form_map_is_valid(form_map):
        # do stuff, use form_map['field_1_label'].cleaned_data['field'] for field reference.
        filters= [form.get_filter() for form in form_list]
    template = loader.get_template('some_template.html')
    context = RequestContext(request, {
        'forms': form_list,
        'filtros': filtros,
    })
    return HttpResponse(template.render(context))

# Example: some_template.html

<form method="get">
    {% csrf_token %}
    {% for form in forms %}
    {% if form %}
    {% crispy form %}
    {% endif %}
    {% endfor %}
    <div style="text-align: right">
        <input type="submit" name="submit" value="Filter" class="btn btn-primary" id="submit-id-submit">
    </div>
</form>
    <ul class="list-group">
        {% for filter in filtros %}
        {% if filter %}
        <li><strong>{{filter.key}}: </strong>{{filter.value}}</li>
        {% endif %}
        {% endfor %}
    </ul>
    # Show some data