Исходный код метода:
// Validate cart has products and has stock.
if ((!$this->cart->hasProducts() && empty($this->session->data['vouchers'])) || (!$this->cart->hasStock() && !$this->config->get('config_stock_checkout'))) {
$this->redirect($this->url->link('checkout/cart'));
}
// Validate minimum quantity requirments.
$products = $this->cart->getProducts();
foreach ($products as $product) {
$product_total = 0;
foreach ($products as $product_2) {
if ($product_2['product_id'] == $product['product_id']) {
$product_total += $product_2['quantity'];
}
}
if ($product['minimum'] > $product_total) {
$this->redirect($this->url->link('checkout/cart'));
}
}
$this->language->load('checkout/checkout');
$this->document->setTitle($this->language->get('heading_title'));
$this->document->addScript('catalog/view/javascript/jquery/colorbox/jquery.colorbox-min.js');
$this->document->addStyle('catalog/view/javascript/jquery/colorbox/colorbox.css');
$this->data['breadcrumbs'] = array();
$this->data['breadcrumbs'][] = array(
'text' => $this->language->get('text_home'),
'href' => $this->url->link('common/home'),
'separator' => false
);
$this->data['breadcrumbs'][] = array(
'text' => $this->language->get('text_cart'),
'href' => $this->url->link('checkout/cart'),
'separator' => $this->language->get('text_separator')
);
$this->data['breadcrumbs'][] = array(
'text' => $this->language->get('heading_title'),
'href' => $this->url->link('checkout/checkout', '', 'SSL'),
'separator' => $this->language->get('text_separator')
);
$this->data['heading_title'] = $this->language->get('heading_title');
$this->data['text_checkout_option'] = $this->language->get('text_checkout_option');
$this->data['text_checkout_account'] = $this->language->get('text_checkout_account');
$this->data['text_checkout_payment_address'] = $this->language->get('text_checkout_payment_address');
$this->data['text_checkout_shipping_address'] = $this->language->get('text_checkout_shipping_address');
$this->data['text_checkout_shipping_method'] = $this->language->get('text_checkout_shipping_method');
$this->data['text_checkout_payment_method'] = $this->language->get('text_checkout_payment_method');
$this->data['text_checkout_confirm'] = $this->language->get('text_checkout_confirm');
$this->data['text_modify'] = $this->language->get('text_modify');
$this->data['logged'] = $this->customer->isLogged();
$this->data['shipping_required'] = $this->cart->hasShipping();
if (file_exists(DIR_TEMPLATE . $this->config->get('config_template') . '/template/checkout/checkout.tpl')) {
$this->template = $this->config->get('config_template') . '/template/checkout/checkout.tpl';
} else {
$this->template = 'default/template/checkout/checkout.tpl';
}
$this->children = array(
'common/column_left',
'common/column_right',
'common/content_top',
'common/content_bottom',
'common/footer',
'common/header'
);
if (isset($this->request->get['quickconfirm'])) {
$this->data['quickconfirm'] = $this->request->get['quickconfirm'];
}
$this->response->setOutput($this->render());