Fix unpriced item deletion

src/purchase/templates/purchase/snippets/basket_unpriced_item.html

@@ -14,7 +14,7 @@
         <div class="card-body">
             <h4 class="card-title">{{ product.name }}</h4>
             <div class="input-group">
-                <input type="number" step="0.01" name="unpriced_product-{{ product.pk }}" min="0" class="numberinput form-control" required="" id="unpriced_id_product-{{ product.pk }}"
+                <input type="number" step="1" name="unpriced_product-{{ product.pk }}" min="0" class="numberinput form-control" required="" id="unpriced_id_product-{{ product.pk }}"
                        value="{{ value|default:0 }}"
                 >
             </div>

src/purchase/views/basket.py

@@ -49,8 +49,13 @@ def update_with_unpriced_products(basket: Basket, post_data: MultiValueDict):
     basket.items.filter(product__in=no_fixed_price.values()).delete()
     for product_id, product in no_fixed_price.items():
         if prices := post_data.getlist(f"{UNPRICED_PREFIX}{product_id}"):
-            for price in prices:
-                basket.items.create(product=product, quantity=1, unit_price_cents=price)
+            for price in map(int, prices):
+                if price:
+                    basket.items.create(
+                        product=product,
+                        quantity=1,
+                        unit_price_cents=price,
+                    )
 
 
 @require_http_methods(["GET", "POST"])