I have some problem about this error, who can tell me why? Thank you!! Fatal error: Uncaught Error: Call to a member function getId() on null in

  • Please detail $customer = $this->helperData->getCustomer(); – HoangHieu Jun 10 at 8:14
  • sorry,what your mean? @HoangHieu – niceonelee Jun 10 at 8:23
  • $this->helperData->getCustomer(); this function returned null, please detail it. – HoangHieu Jun 10 at 8:25
  • This have no return, just return $collection. and when i changed other code it can work for no login, but login will be error. @HoangHieu – niceonelee Jun 10 at 8:33
  • did you print_r($customer) to check is it returning something or not? – Asad Khan Jun 10 at 8:39

Your error is more logic than syntax, if the customer isn't logged in (guest) you cannot get the user id. I would edit your helper function to check if the user is logged in and return false if not.

public function getCustomer()
    $customerSession = $this->customerSession->create();
    $customerData = $customerSession->getCustomerData();
        return $customerData;
     } else{
         return false;

Then in your getTicket function use something like this :

if ($this->helperData->getCustomer()){
  // run your code as normal
} else {
  // redirect to login
  • you should mark this as the answer in that case – bjornredemption Jun 10 at 13:39
  • yes,marked,can you help me see the second issue,thank you @bjornredemption – niceonelee Jun 10 at 13:44
 $user_id = $customer->getId(); 

this code return int or null,when return null,the program will automatically throw an error.You should handle your mistakes properly.eg:

if ($user_id) {
//your code
 //your code
  • im still getting error, can you made a full code let me to see what i wrong, thank you!! @tokey – niceonelee Jun 10 at 10:03
  • getting this 1 exception(s): Exception #0 (Exception): Notice: Undefined variable: user_id – niceonelee Jun 10 at 10:06
  • @niceonelee Please show your complete code. – tokey Jun 10 at 10:09
  • please check the original post, this is full file code, thank you! @tokey – niceonelee Jun 10 at 10:16
  • @niceonelee But you didn't modify your code as I suggested. – tokey Jun 10 at 10:24

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