My custom POST Controller return empty response

Question

I created my custom Controller for POST request, but i all time have empty response.

 $testIds = $this->request->getPost('test');
 $items = [];
 foreach ($testIds as $id) {
 $items[$id] = [
 'test' => $id,
 ];
 }
 if (count($items)) {
 $response = [
 'success' => true,
 'items' => $items
 ];
 } else {
 $response = [
 'success' => false,
 'message' => __('False')
 ];
 }
 (Magento\Framework\Controller\Result\JsonFactory)
 $resultJson = $this->jsonFactory->create();
 $resultJson->setData($response);
 return $resultJson;

My Controller implements Magento\Framework\App\Action\HttpPostActionInterface.

How i can fix it?

Answer 1

In general, HTTP responses of 500 will write an error to the Magento log if it is a Magento issue, and will not write to the Magento log if it is not a Magento issue. So first check the log:

$ cd /path/to/magento/installation
$ tail var/log/system.log

This is an answer to the general case of "Why am I getting 500 response". Once you know the answer to that question, you can start to debug the specific issue being faced.

• David Young: Thank you. I just wanted to make an update on the issue, because I found the reason for the 500 code. I found the reason for 500 code. Sometimes my conditions were not met and the post request was not transmitted, so a 500 error occurred