Display suppliers logo on HomePageCategorieById Module

[kalaiarasan]

Hello,My website is about coupon and deal website i.e running through affiliate program.So I am suppose to display suppliers logo on product.I tried on product-list.tpl and it's working fine but not working on the module"HomeCategorieById".The code I used to display Supplier logo is
 
 
<img src="{$img_sup_dir}{$homeproducby.id_supplier}-medium.jpg" alt="{$homeproducby.supplier_name|escape:'htmlall':'UTF-8'}" title="{$homeproducby.supplier_name|escape:'htmlall':'UTF-8'}" />

is showing question mark on the product image as shown in the attachment .Here I am suppose to edit module PHP file to acquire suppliers list from DataBase and I am not aware of it to do such thing myself.Kindly please anyone help me to solve this problem with PHP code to obtain supplier logo on product list on this module only.

 

homecategoriebyid.zip

 

The module that I used also enclosed below.

 

Best Regards
 

Edited September 5, 2015 by razaro (see edit history)

[Cravenkiss]

So did you found a way to display supplier logo on product list? Can anyone help please?