class ProductSearchForm(forms.ModelForm):

    def __init__(self, *args, **kwargs):
        super(ProductSearchForm, self).__init__(*args, **kwargs)
        self.fields['length_range'].empty_label = "any size"
        self.fields['hull_type'].empty_label = "any type"
        self.fields['power'].empty_label = "any type"
        self.fields['speed'].empty_label = "any speed"
        self.fields['hull_only_available'].empty_label = None
        # self.fields['price'].widget.attrs['min'] = Product.price
        # self.fields['price'].widget.attrs['max'] = Product.price

    class Meta:
        model = Product
        fields = ('length_range', 'hull_type', 'price', 'power', 'speed', 'hull_only_available')

class IndexView(FormView):
    template_name = 'index.html'
    form_class = ProductSearchForm
    success_url = "search/"

    def get_context_data(self, **kwargs):
        context = super(IndexView, self).get_context_data(**kwargs)
        context['length_ranges'] = LengthRange.objects.all().order_by('pk')
        context['hull_types'] = Hull.objects.all().order_by('pk')
        context['power_configs'] = PowerConfiguration.objects.all().order_by('pk')
        context['speed_ranges'] = SpeedRange.objects.all().order_by('pk')
        context['price'] = Product.objects.all().aggregate(Min('price'), Max('price'))
        return context

    def get_form_kwargs(self):
        kwargs = super(IndexView, self).get_form_kwargs()
        print(kwargs)
        return kwargs

<form class="nl-form" action="{% url 'boatsales:search' %}" method="get">
                                A boat with a length of
                                {{ form.length_range }}
                                , with hull type of
                                {{ form.hull_type }}
                                with
                                {{ form.power }}
                                power
                                configuration and a top speed between
                                {{ form.speed }}.
                                My budget is from $<input type="text" value="{{ price.price__min|intcomma }}"
                                                         placeholder="{{ price.price__min|intcomma }}"
                                                         data-subline="Our current lowest price is: <em>{{ price__min|intcomma }}</em>"/>
                                to
                                $<input
                                        type="text" value="{{ price.price__max|intcomma }}"
                                        placeholder="{{ price.price__min|intcomma }}"
                                        data-subline="Our current highest price is: <em>{{ price.price__min|intcomma }}</em>"/>.
                                Hull only
                                availability <select>
                                <option value="False" selected>is not</option>
                                <option value="True">is</option>
                            </select> a concern.
                                <div class="container">
                                    <button type="submit"
                                            class="btn-a btn-a_size_large btn-a_color_theme">
                                        Show me the results!
                                    </button>
                                </div>
                            </form>