How is Magento\Checkout\Model\Type\Onepage::_prepareGuestQuote() implemented and used?

Development Quote

dmitrii_fediuk (Dmitrii Fediuk) April 9, 2017, 3:30pm 1

Context: How is a customer email set to a quote?

Implementation

github.com

magento/magento2/blob/2.1.5/app/code/Magento/Checkout/Model/Type/Onepage.php#L557-L570


/**
 * Prepare quote for guest checkout order submit
 *
 * @return $this
 */
protected function _prepareGuestQuote()
{
    $quote = $this->getQuote();
    $quote->setCustomerId(null)
        ->setCustomerEmail($quote->getBillingAddress()->getEmail())
        ->setCustomerIsGuest(true)
        ->setCustomerGroupId(GroupInterface::NOT_LOGGED_IN_ID);
    return $this;
}

The single usage: Magento\Checkout\Model\Type\Onepage::saveOrder()

github.com

magento/magento2/blob/2.1.5/app/code/Magento/Checkout/Model/Type/Onepage.php#L693-L696


switch ($this->getCheckoutMethod()) {
    case self::METHOD_GUEST:
        $this->_prepareGuestQuote();
        break;

Details: How is Magento\Checkout\Model\Type\Onepage::saveOrder() implemented and used?

How is a customer email set to a quote?