Custom WHMCS module development

I have just started developing WHMCS modules, I was wondering how I can add another tab to a certain products service page(Ie Edit Service) and then have options to edit the service.

to a certain products service page

How are you wanting to achieve this? Have this button enabled on specific products? categories? clients? packages IDs etc?

I want to have this enabled for one product/a certain product ID.

Anyone know how I would do this?

You could do this by editing the clientareaproductdetails.tpl. From there you could add a new tab and add a smarty condition around it to only show for a certain product id.

First edit the tabs div to add the new tab (e.g. only show for product id 7):

<div id="tabs">
   <ul class="nav nav-tabs" data-tabs="tabs">
       <li id="tab1nav" class="active"><a href="#tab1" data-toggle="tab">{$LANG.information}</a></li>
       {if $modulechangepassword}<li id="tab2nav"><a href="#tab2" data-toggle="tab">{$LANG.serverchangepassword}</a></li>{/if}
       {if $downloads}<li id="tab3nav"><a href="#tab3" data-toggle="tab">{$LANG.downloadstitle}</a></li>{/if}
       <li id="tab4nav"><a href="#tab4" data-toggle="tab">{$LANG.clientareahostingaddons}</a></li>
       {if $packagesupgrade || $configoptionsupgrade || $showcancelbutton || $modulecustombuttons}<li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#">{$LANG.productmanagementactions}</a>
           <ul class="dropdown-menu">
               {foreach from=$modulecustombuttons key=label item=command}
               <li><a href="clientarea.php?action=productdetails&id={$id}&modop=custom&a={$command}">{$label}</a></li>
               {/foreach}
               {if $packagesupgrade}<li><a href="upgrade.php?type=package&id={$id}">{$LANG.upgradedowngradepackage}</a></li>{/if}
               {if $configoptionsupgrade}<li><a href="upgrade.php?type=configoptions&id={$id}">{$LANG.upgradedowngradeconfigoptions}</a></li>{/if}
               {if $showcancelbutton}<li><a href="clientarea.php?action=cancel&id={$id}">{$LANG.clientareacancelrequestbutton}</a></li>{/if}
           </ul>
       </li>{/if}
       {if $id == "7'} <li id="tab5nav"><a href="#tab5" data-toggle="tab">New Tab Title</a></li>{/if}
   </ul>
</div>

Then you would need to add the content for the tab:

{if $id == "7'}
<div data-toggle="tab" id="tab5" class="tab-content">

   <div class="row">

       <div class="col30">
           <div class="internalpadding">
               <div class="styled_title"><h2>Tab Title</h2></div>
               <p>Description</p>
           </div>
       </div>
       <div class="col70">
           <div class="internalpadding">
            Tab content
           </div>
       </div>

   </div>

</div>  
{/if}

You could do this by editing the clientareaproductdetails.tpl. From there you could add a new tab and add a smarty condition around it to only show for a certain product id.

 

First edit the tabs div to add the new tab (e.g. only show for product id 7):

<div id="tabs">
   <ul class="nav nav-tabs" data-tabs="tabs">
       <li id="tab1nav" class="active"><a href="#tab1" data-toggle="tab">{$LANG.information}</a></li>
       {if $modulechangepassword}<li id="tab2nav"><a href="#tab2" data-toggle="tab">{$LANG.serverchangepassword}</a></li>{/if}
       {if $downloads}<li id="tab3nav"><a href="#tab3" data-toggle="tab">{$LANG.downloadstitle}</a></li>{/if}
       <li id="tab4nav"><a href="#tab4" data-toggle="tab">{$LANG.clientareahostingaddons}</a></li>
       {if $packagesupgrade || $configoptionsupgrade || $showcancelbutton || $modulecustombuttons}<li class="dropdown"><a class="dropdown-toggle" data-toggle="dropdown" href="#">{$LANG.productmanagementactions}</a>
           <ul class="dropdown-menu">
               {foreach from=$modulecustombuttons key=label item=command}
               <li><a href="clientarea.php?action=productdetails&id={$id}&modop=custom&a={$command}">{$label}</a></li>
               {/foreach}
               {if $packagesupgrade}<li><a href="upgrade.php?type=package&id={$id}">{$LANG.upgradedowngradepackage}</a></li>{/if}
               {if $configoptionsupgrade}<li><a href="upgrade.php?type=configoptions&id={$id}">{$LANG.upgradedowngradeconfigoptions}</a></li>{/if}
               {if $showcancelbutton}<li><a href="clientarea.php?action=cancel&id={$id}">{$LANG.clientareacancelrequestbutton}</a></li>{/if}
           </ul>
       </li>{/if}
       {if $id == "7'} <li id="tab5nav"><a href="#tab5" data-toggle="tab">New Tab Title</a></li>{/if}
   </ul>
</div>

 

Then you would need to add the content for the tab:

{if $id == "7'}
<div data-toggle="tab" id="tab5" class="tab-content">

   <div class="row">

       <div class="col30">
           <div class="internalpadding">
               <div class="styled_title"><h2>Tab Title</h2></div>
               <p>Description</p>
           </div>
       </div>
       <div class="col70">
           <div class="internalpadding">
            Tab content
           </div>
       </div>

   </div>

</div>  
{/if}

Then how could I add things for the service to be updated? Can I put the PHP in the TPL file? Or in the module would I do a post and just put the input fields in the tpl file.