Customer Default Group In Smarty But Still Error Undefined Variable

[phingko]

HI,

 

I tried the module from this post ;

https://www.prestashop.com/forums/topic/228277-get-customer-group-id-in-smarty/

 

So I want to show wholesale price when customer log in as wholesale customer which ID is 4, it works fine but the problem is when the customer is not logged in.

It appears error that variable $customerdefaultgroup is undefined.

 

in my customer group module, i have this hook header function; 

public function hookHeader()
        {
                global $smarty;
                $context = Context::getContext();
                $id_lang = $context->cart->id_lang;
                $customer = $context->customer;
                $id_customer = $customer->id;
                $groups = Db::getInstance()->executeS("SELECT " ._DB_PREFIX_. "customer_group.id_group , " ._DB_PREFIX_. "group_lang.name
FROM " ._DB_PREFIX_. "customer_group
                                LEFT JOIN " ._DB_PREFIX_. "group_lang ON " ._DB_PREFIX_. "group_lang.id_group = " ._DB_PREFIX_. "customer_group.id_group
                                WHERE " ._DB_PREFIX_. "customer_group.id_customer = '$id_customer' AND " ._DB_PREFIX_. "group_lang.id_lang = '$id_lang'");
                if(!isset($groups[0])) $groups = FALSE;
                $smarty->assign('customerGroups', $groups);
$defaultGroupId = Configuration::get('PS_CUSTOMER_GROUP');
$customerDefaultGroup = new Group($defaultGroupId);
$smarty->assign('customerDefaultGroup' , $customerDefaultGroup);
        }

Then on my product-list.tpl

when customer log in as wholesale customer, which is customer group id = 4, it will show the WP price.

<a class="lnk_more" href="{$product.link}" title="{l s='View' mod='homefeatured'}">{l s='View' mod='homefeatured'}</a>
{if $product.show_price AND !isset($restricted_country_mode) AND !$PS_CATALOG_MODE AND isset($cart->id_customer)}
<p class="price_container">
{if $customerDefaultGroup>=4}<span class="rrp_price">RRP{convertPrice price=$product.orderprice}</span>{/if}
<span class="price" style="float:right;">{if $customerDefaultGroup>=4}WP{else}RRP{/if}{if !$priceDisplay}{convertPrice price=$product.price}{else}{convertPrice price=$product.price_tax_exc}{/if}</span>
</p>
{/if}

 

The funny thing is the code works ok when customer log in, but if a customer doesn't log in and add items to cart, it will appear the error

 

Notice: Undefined index: customerDefaultGroup in /var/www/....../cache/smarty/compile/66/de/fc/66defc1f2bf06d532797e725e346402f7c199a68.file.product-list.tpl.php on line 84

        

 

Can anyone help me what's wrong here?

I have tried a lot of solution but can't figured out why the error could come out when it's declared.

 

Help!

Edited December 14, 2015 by phingko (see edit history)