get customer id by email magento2?

Question

I am using below code to get customer id by email

use Magento\Customer\Model\Session;

protected $_objectManager;
protected $currentCustomer;
protected $_customer; 
protected $_storeManager;    
 public function __construct(
    Session $customerSession,
    \Magento\Customer\Model\CustomerFactory $customer,
    \Magento\Framework\ObjectManagerInterface $objectmanager,
    \Magento\Store\Model\StoreManagerInterface $storeManager
)
{        
    $this->session = $customerSession;        
    $this->_customer = $customer;       
    $this->_objectManager = $objectmanager;
    $this->_storeManager = $storeManager; 
}

 public function execute()
{
  $email = 'test@gmail.com';
 $customerModel = $this->_objectManager->create('Magento\Customer\Model\Customer');
        $storeId = $this->getWebsiteId();
        $customerModel->setWebsiteId($storeId);
        $customerModel->loadByEmail($email);
        $userId = $customerModel->getId();
 }
 public function getWebsiteId(){
   return $this->_storeManager->getStore()->getWebsiteId();
}

I am not getting customerid, Please anyone suggest me, how to get customer id by email.

Answer 1

Use this below code :

protected $_customer;
protected $_storemanager;
public function __construct(
    .....
    \Magento\Customer\Model\CustomerFactory $customer,
    \Magento\Store\Model\StoreManagerInterface $storemanager,
    .....
){
    .....
    $this->_customer = $customer;
    $this->_storemanager = $storemanager;
    ...
}
public function execute() {
    $email = 'test@test.com';
    $websiteID = $this->_storemanager->getStore()->getWebsiteId();
    $customer = $this->_customer->create()->setWebsiteId($websiteID)->loadByEmail($email);
    $customerId = $customer->getId();
}

Answer 2

There is another way you can get Customer id by Customer Email.In this use service contact Class \Magento\Customer\Api\CustomerRepositoryInterface

namespace {NameSpace};


class {YOUR_CLass}
{

    /**
     * @var \Magento\Customer\Api\CustomerRepositoryInterface
     */
    protected $customerRepository;

    public function __construct(
        \Magento\Customer\Api\CustomerRepositoryInterface $customerRepository
    )
    {
        $this->customerRepository = $customerRepository;
    }

    /**
     * @return \Magento\Customer\Api\Data\CustomerInterface
     * @throws \Magento\Framework\Exception\LocalizedException
     * @throws \Magento\Framework\Exception\NoSuchEntityException
     */
    public function  getCustomer()
    {

        try{
            $customer = $this->customerRepository->get('amit@gmail.com');
            $customerId = $customer->getId();
        }catch(\Magento\Framework\Exception\NoSuchEntityException $exception){

        }catch(\Magento\Framework\Exception\LocalizedException $exception){

        }
        return $customer;
    }
}