if (!$product->hasAllRequiredCustomizableFields() && !$this->customization_id)

if ($field_ids = $product->getCustomizationFieldIds())
        {
            $authorized_text_fields = array();
            foreach ($field_ids as $field_id)
                if ($field_id['type'] == Product::CUSTOMIZE_TEXTFIELD)
                    $authorized_text_fields[(int)$field_id['id_customization_field']] = 'textField'.(int)$field_id['id_customization_field'];

            $indexes = array_flip($authorized_text_fields);
            foreach ($_POST as $field_name => $value)
                if (in_array($field_name, $authorized_text_fields) && $value != '')
                {
                    if (!Validate::isMessage($value))
                        $this->errors[] = Tools::displayError('Invalid message');
                    else
                        $this->context->cart->addTextFieldToProduct($product->id, $indexes[$field_name], Product::CUSTOMIZE_TEXTFIELD, $value);
                }
                else if (in_array($field_name, $authorized_text_fields) && $value == '')
                    $this->context->cart->deleteCustomizationToProduct((int)$this->product->id, $indexes[$field_name]);
        }

{if $product.customizable}
<div class="customizableProductsText">
    <h5 class="product-heading-h5">{l s='Text'}</h5>
    <ul id="text_fields">
    {foreach from=$product.customizationFields item='field' name='customizationFields'}
        {if $field.type == 1}
            <li class="customizationUploadLine{if $field.required} required{/if}">
                <label for ="textField{$customizationField}">
                    {assign var='key' value='textFields_'|cat:$product.id_product|cat:'_'|cat:$field.id_customization_field}
                    {if !empty($field.name)}
                        {$field.name}
                    {/if}
                    {if $field.required}^*{/if}
                </label>
                <textarea name="textField{$field.id_customization_field}" class="form-control customization_block_input" id="textField{$customizationField}" rows="3" cols="20">{strip}
                    {if isset($textFields.$key)}
                        {$textFields.$key|stripslashes}
                    {/if}
                {/strip}</textarea>
            </li>
            {counter}
        {/if}
    {/foreach}
    </ul>
</div>
{/if}

$this->assignProductList();

foreach ($this->cat_products as &$product)
        {
            if ($product['customizable'])
            {
                $p = new Product($product['id_product'], true, $this->context->language->id, $this->context->shop->id);
                $product['customizationFields'] = $p->getCustomizationFields($this->context->language->id);
            }        
        }