Magento 2 : issue with service class of API (Message: Notice: Undefined index: entity_id)

Question

this is error:

var//log/debug.log:[2019年12月10日 10:59:36] main.CRITICAL: Report ID: webapi-5def7a98e911d; Message: Notice: Undefined index: entity_id in /Applications/MAMP/htdocs/Magento2_3/app/code/SimplifiedMagento/Custom2/Model/PositionRepository.php on line 46 {"exception":"[object] (Exception(code: 0): Report ID: webapi-5def7a98e911d; Message: Notice

This is my service method:

public function getDetails($email)
 {
 $emailId = $email;
 $customer = $this->customerFactory->create();
 $arr = $customer->getCollection()->addFieldToSelect(['entity_id'])->addFieldToFilter('email',$emailId)->getData();
 $entityId = $arr['entity_id'];
 //entity id is above
 $customTable = $this->addDataFactory->create();
 $array = $customTable->getCollection()->addFieldToSelect(['position'])->addFieldToFilter('customer_id',$entityId)->getData();
 $position = $array['position'];
 $obj = $this->positionInterfaceFactory->create()->setPosition($position);
 return $obj;
 }
}

Answer 1

Replace this line

$entityId = $arr['entity_id'];

With this

$entityId = isset($arr['entity_id']) ? $arr['entity_id'] : '';

Update

public function getDetails($email)
{
 $emailId = $email;
 $customer = $this->customerFactory->create();
 $arr = $customer->getCollection()->addFieldToSelect(['entity_id'])->addFieldToFilter('email',$emailId)->getData();
 $entityId = isset($arr['entity_id']) ? $arr['entity_id'] : '';
 //entity id is above
 if($entityId){
 $customTable = $this->addDataFactory->create();
 $array = $customTable->getCollection()->addFieldToSelect(['position'])->addFieldToFilter('customer_id',$entityId)->getData();
 $position = isset($array['position']) ? $array['position'] : 0;
 $obj = $this->positionInterfaceFactory->create()->setPosition($position);
 return $obj;
 }else{
 return "Entity ID is missing!";
 }
}

Hope this will help you!

• Ankur Anand: is this a correct way to "select with WHERE clause" in magento 2.3?
• Ankur Anand: $arr = $customer->getCollection()->addFieldToSelect(['entity_id'])->addFieldToFilter('email',$emailId)->getData()
• Kishan Savaliya: Yes, that will return entity ID of given email id
• Ankur Anand: should $emailId be in double quotes since it is string?
• Kishan Savaliya: Sorry, I do not understand what you're asking here.