Django javascript скрыть функциональность не работает

В основном я хочу, чтобы был только флажок "У этого товара есть вариации", тогда, если пользователь отметит этот флажок, то появятся флажки "Размер" и "Цвет". Если пользователь нажмет на размер, появится поле значения вариации размера. То же самое с цветом. Сейчас, хотя я и пытаюсь с помощью своего скрипта добиться этой функциональности, у меня не получается.

Что я делаю не так? Заранее спасибо!

Мой models.py:

class Product(models.Model):
    name = models.CharField(max_length=100)
    product_slug = models.SlugField(unique=True, blank=True)
    description = models.TextField()
    price = models.DecimalField(max_digits=10, decimal_places=2)
    image = models.ImageField(upload_to='products/')
    image2 = models.ImageField(upload_to='products/', null=True, blank=True)
    business = models.ForeignKey(Business, on_delete=models.CASCADE, related_name='products')
    in_stock = models.BooleanField(default=True)
    is_popular = models.BooleanField(default=False)
    is_best_seller = models.BooleanField(default=False)
    min_delivery_time = models.PositiveIntegerField(null=True, help_text="Minimum estimated delivery time in business days")
    max_delivery_time = models.PositiveIntegerField(null=True, help_text="Maximum estimated delivery time in business days")
    has_variations = models.BooleanField(default=False)

    def __str__(self):
        return f'{self.business.business_name}, {self.name}'

    def get_json_data(self):
        data = {
            'id': self.id,
            'name': self.name,
            'price': float(self.price),
            'description': self.description,
            'images': [self.image.url, self.image2.url] if self.image and self.image2 else [],
            'min_delivery_time': self.min_delivery_time,
            'max_delivery_time': self.max_delivery_time,
        }
        return json.dumps(data)

    def save(self, *args, **kwargs):
        if not self.product_slug:
            self.product_slug = slugify(self.name)
        super().save(*args, **kwargs)

    @property
    def overall_review(self):
        avg_rating = self.reviews.aggregate(Avg('rating'))['rating__avg']
        return round(avg_rating, 1) if avg_rating else 0

    def star_rating_percentage(self, star):
        total_reviews = self.reviews.count()
        if total_reviews == 0:
            return 0
        star_count = self.reviews.filter(rating=star).count()
        return round((star_count / total_reviews) * 100)


VAR_CATEGORIES = (
    ('size', 'Size'),
    ('color', 'Color'),
)

class Variation(models.Model):
    product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='variations')
    name = models.CharField(max_length=50, choices=VAR_CATEGORIES, null=True, blank=True)

    def __str__(self):
        return f"{self.product.name} - {self.get_name_display()}"

class ProductVariation(models.Model):
    variation = models.ForeignKey(Variation, on_delete=models.CASCADE, related_name='values', null=True)
    value = models.CharField(max_length=50, null=True)
    image = models.ImageField(upload_to='product_variations/', null=True, blank=True)

    class Meta:
        unique_together = (('variation', 'value'),)

    def __str__(self):
        return f"{self.variation.product.name} - {self.variation.get_name_display()} - {self.value}"

Мой views.py:

class ProductCreateView(LoginRequiredMixin, View):
    def get(self, request, business_slug):
        business = get_object_or_404(Business, business_slug=business_slug, seller=request.user)
        return render(request, 'business/product_create.html', {'business': business, 'VAR_CATEGORIES': VAR_CATEGORIES})

    def post(self, request, business_slug):
        business = get_object_or_404(Business, business_slug=business_slug, seller=request.user)
        if business.seller == request.user:
            name = request.POST.get('name')
            description = request.POST.get('description')
            price = request.POST.get('price')
            min_delivery_time = request.POST.get('min_delivery_time')
            max_delivery_time = request.POST.get('max_delivery_time')
            image = request.FILES.get('image')
            image2 = request.FILES.get('image2')
            in_stock = request.POST.get('in_stock') == 'on'
            has_variations = request.POST.get('has_variations') == 'on'

            product = Product.objects.create(
                name=name,
                description=description,
                price=price,
                image=image,
                image2=image2,
                min_delivery_time=min_delivery_time,
                max_delivery_time=max_delivery_time,
                business=business,
                in_stock=in_stock,
                has_variations=has_variations
            )

            if has_variations:
                variation_names = request.POST.getlist('variation_names')
                for variation_name in variation_names:
                    variation = Variation.objects.create(
                        product=product,
                        name=variation_name
                    )
                    variation_values = request.POST.getlist(f'variation_values_{variation_name}')
                    variation_images = request.FILES.getlist(f'variation_images_{variation_name}')
                    for i, value in enumerate(variation_values):
                        variation_image = variation_images[i] if i < len(variation_images) else None
                        ProductVariation.objects.create(
                            variation=variation,
                            value=value,
                            image=variation_image
                        )

            return redirect('product_detail', business_slug=business.business_slug, product_slug=product.product_slug)
        else:
            return render(request, 'business/product_create.html', {'business': business, 'error': 'You are not authorized to add products to this business.', 'VAR_CATEGORIES': VAR_CATEGORIES})

Мой product_create.html:

Then if the user checks that box, then the Size and Colour checkboxes will show up.