Adding validate by checkbox on One Page Checkout

[Radi]

I'm trying prepare my own validation

 

In authcontroller.php i made

if (Tools::getValue('firm') == "1"){

if (!Tools::getValue('vat_number'))

$this->errors[] = Tools::displayError('You have chosen that you want to get invoice, please fill in VAT ID');

if (!Tools::getValue('company'))

$this->errors[] = Tools::displayError('You have chosen that you want to get invoice, please fill in company name');

}

 

Add add to authentication.tpl

<p class="checkbox">

<input type="checkbox" name="firm" id="firm" value="1">

<label for="firm">{l s='I need an invoice'}</label>

</p>

 

All works fine ! If customer check checkbox "firm" run validation and it is what i need.

 

But in One Page Checkout i try do the same but use

 

<p class="checkbox">

<input type="checkbox" name="invoice_address" id="invoice_address" value="1"/>

<label for="invoice_address"><b>{l s='Please use another address for invoice'}</b></label>

</p>

 

 

if (Tools::getValue('invoice_address') == "1"){

if (!Tools::getValue('vat_number_invoice'))

$this->errors[] = Tools::displayError('You have chosen that you want to get invoice, please fill in VAT ID');

if (!Tools::getValue('company_invoice'))

$this->errors[] = Tools::displayError('You have chosen that you want to get invoice, please fill in company name');

}

 

 

 

 

I would like validate empty fields and show errors like previous example on authentication :

<input type="text" class="text" id="vat_number_invoice" name="vat_number_invoice" value="" />

and

<input type="text" class="text" id="company_invoice" name="company_invoice" value="" />

 

I'm look in forum and try made changes few days but no results

I'm begginer. Can anybody help how made changes?

Edited February 13, 2013 by Radi (see edit history)