Controller dispatch error in Zend framework 2 - php

Question

I am returning Json response from zend controller.
This is my code
Controller Code
public function get()
{
$result = //calling other function and getting response in array
print("value in controller before calling toJsonModel");
print_r($result);
$temp = $this->toJsonModel($result);
var_dump($temp);
return $temp;
}
toJsonModel function
public function toJsonModel($data = array())
{
$data['requestId'] = $this->getHeader('RequestId');
print("Value just before returning to controller");
print_r($data);
return new JsonModel($data);
}
Response
First and second print displays correct values. But after getting values from toJsonModel when I try to displays wrong values and adds some other values like "captureTo", "terminate" and "children" as protected.
I don't know why it's giving me wrong message.
Can any one guide me to right path and tell me what the problem is ?
Thanks in advance.
EDIT
I am adding new screenshot to display full message.
ERROR :
{"name":"Email Not Found","message":"No account found with this email
address.","code":404,"requestId":"12","reason":"error-controller-cannot-dispatch","display_exceptions":true,"controller":"RSMobile\Controller\ForgotPassword","controller_class":null}

Answer 1

I finally solved this problem.
I was throwing some error from controller whenever there is a problem. I used to throw 404 when email not found. That was causing this error.
At first i thought that this is a problem related to JSON model. But thanks to #Bilal who helped me in figuring out the problem.
When I throw 404 from controller it by default appends all these data at the end. But when i throw any error other than 404, it works.

Answer 2

This is because you are returning an object of JsonModel from method toJsonModel.
return new JsonModel($data);
So, every object has some properties that you can use to manipulate data. See the docs of Zend\View\Model\JsonModel here
So actually the values are not wrong but there is a way to access properties of an object.
Update
Attaching dispatch event
public function onBootstrap($e)
{
// some stuff
$eventManager = $e->getApplication()->getEventManager();
$eventManager->attach("dispatch", function($e) {
echo "Dispatch!";
});
// some stuff
}