Lost customizations with large Update

-- HikaShop version -- : 3.3.0
-- Joomla version -- : 3.8.5
-- PHP version -- : 5.6.33
-- Browser(s) name and version -- : Chrome 64.0.3282.167

Our webstore was developed with HikaShop [1409241754] several years ago. It had to be customized at that time to meet our requirements. I am trying to upgrade the website to current, and I have lost functionality. I can provide the url for the test environment via PM if needed.

• ]All of the "Additional information" that can be found in the checkout process (on our current site) has disappeared (on the test site).
• I have discovered that there is a purchase order plugin now, and I have added that in. This would remove the Purchase Order Number field in the Additional information area, but I still need the upload option.
• "Add to cart" functionality has been lost. Previewing the cart and updating the number when items are added to cart.
• Turning off Legacy Add to Cart did now allow the cart count to increment. However, I was able to get the count number to increment by leaving Legacy Add to Cart "On" and disabling the "Use AJAX" for add to cart
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Rambling aside, I would like to use as much default logic as possible, to prevent these issues in the future. I assume it would be best to be able to have all legacy stuff set to "off".
What I really must have:

1. Incremented cart counter when add to cart is clicked, not a user forced page reload
2. File upload for Purchase Orders in the checkout process
3. Some custom text fields for extra shipping information int he checkout process

nicolas wrote: Hi,
1. The additional information is displayed by the custom field system. Edit your custom order fields via the menu Display>Custom fields and make sure that the new display settings of your custom fields (these settings were added in HikaShop 3.0.0) are configured like you want (checkout display setting activated).

2. Turn off the "add to cart legacy" setting in order to use the new add to cart system. If the cart module is not being refreshed after that. Then either you're not using the default cart module of HikaShop, or you want to rename the file templates/YOUR_TEMPLATE/html/com_hikashop/product/cart.php in order to deactivate the customization made to the cart module.

Nicolas,
I have messaged you the url and credentials to get in, as I have the test site password protected.
There are two files in that directory: cart.php and show_tabular.php. I have added _old to both. From within Joomla a "Clean Cache" was performed. and from within the browser, I have cleared all cookies/history. The "Add to Cart" button still does not increment.
Edit: It might be worth noting that I am using Mozilla Firefox 58.0.2 (64-bit) for viewing the website, and Chrome for modifying (for ease of clearing browser cookies)

Nicolas,
Thank you for the information.
One last thing related to the Additional Information. How do I add the Purchase Order Number from the HikaShop Purchase Order Payment Method to the Order Notification Email? Originally, the Purchase Order Number was an additional information field, and it was added to print in the email. I would like to maintain that, even though I want to switch payment method to use the HikaShop Purchase Order. I am having a hard time figuring out how to add this new variable to the email.
Components > HikaShop > System > Emails > Order Notification
There are three "versions": HTML, Text and Preload. Inside the HTML I found:
<!--{IF:ORDER_SUMMARY}-->
<h1 style="color:#1c8faf !important;font-size:16px;font-weight:bold;border-bottom:1px solid #ddd;padding-top:10px;padding-bottom:10px;">
{TXT:ADDITIONAL_INFORMATION}
</h1>
Which seems promising, but I don't know where or how to modify the ADDITIONAL_INFORMATION or if that is really the correct thing to modify, since the new variable is part of the Purchase Order Payment Method.

Nocolas,
-That code worked, but I would need a new line before it. It has smashed onto the end of the other Additional Information output (see picture).
-I found something else missing from this upgrade, we had some of the Additional Information fields hidden or shown based on certain information. In this case, it was based on shipping choice.
Concept was, shipping option Ground vs Freight was determined by weight of the cart. This part works as intended on the Shipping Options side. However, on top of that, certain fields were hidden when Ground shipping was selected. Certain other fields were hidden when Freight shipping option was selected.

1 - This worked.

public function onAfterOrderProductsListingDisplay(&$order, $type) {
		if(empty($order->order_id)) return;
		$database = JFactory::getDBO();
		$query='SELECT history_data FROM '.hikashop_table('history').' WHERE history_order_id='.(int)$order->order_id.' AND history_data != \'\' ORDER BY history_created ASC';
		$database->setQuery($query);
                echo "<br/>";
		echo $database->loadResult();
	}

You can now send us a purchase order for the amount of $x.xx using the following information. We will now process your order and contact you when completed.

Hey there,

i don’t know if i’m right here but i’ve a question in this direction.
is it possible to style the colour of a part of payment-information?
In my case i want to highlight the parameters which let me find the correct
order to the purchase via bank-account.
maybe you understand my question better when you look on my screenshot.
I want to have only the highlighted part in a red colour for example.
Better both – in email and on the confirm-site after checkout.
Where can i find the code to customize it?

Thanks a lot for your help and sorry for my bad english…

Nicolas,
Sorry for the delay, I thought I responded last Friday.
2) I am having trouble getting this to work. Tried following the example in the link you provided and failed. Also tried a couple other examples I saw online, but none of them seemed to hide the fields. Tried to use an if statement to validate the shipping option selected, but eventually put some of the hide statements before to see whether the if statement was wrong. Here is some of the stuff I tried:

<script type="text/javascript">
window.Oby.registerAjax(['checkout.shipping.updated'], function(params){
  $(".hkcontrol-group control-group hikashop_checkout_collect_freight_phone_line").hide();
  $(".hkc-sm-8").hide();
  document.collect_feight_phone.style.display = 'none';
  if ($('#shipping_radio_1_2__0__manual_1').is(':checked')){
    $(".hkc-sm-8").hide();
  }else{
    $(".hkc-sm-8").show();
  };
	if(hikashop_checkout_shipping_radio="1"){
      $("#collect_freight_phone").hide();
      document.collect_feight_phone.style.display = 'none';
    };
    if(value="6"){
      document.order_freightco.style.display = 'none';
      document.order_shippingaccount.style.display = 'none';
    };
});
</script>

sorry for that – i’ve opened an other topic for this question…