JWT Laravel - Modifying the content of the json output - php

Question

I'm trying to modify the json output of authenticate method of JWT in laravel to make it to display roles as an array.
So here i
created_at
:
"2016-08-18 12:33:14"
email
:
"dhenn.espiritu#gmail.com"
id
:
1
last_logged_in
:
"2016-09-21 16:37:35"
name
:
"Dhenn"
roles
:
"{0: admin,
1: user"}
updated_at
:
"2016-09-21 16:37:35"
But I can't. I tried to modify my jwt.auth php file but it returned me an error that i am setting a non property object.
Here's current setup of the jwt-auth.php
public function authenticate($token = false)
{
$id = $this->getPayload($token)->get('sub');
if (! $this->auth->byId($id)) {
return false;
}
$user = $this->auth->user();
return $user;
}
While, I'm having error trying this:
public function authenticate($token = false)
{
$id = $this->getPayload($token)->get('sub');
if (! $this->auth->byId($id)) {
return false;
}
$user = $this->auth->user();
foreach ($user as $roles) {
$roles->roles = explode(",", $roles->roles);
}
return $user;
}

Answer 1

You said this is your user object:
{ email : "dhenn.espiritu#gmail.com"
id : 1
last_logged_in : "2016-09-21 16:37:35"
name : "Dhenn"
roles : "{0: admin, 1: user"}
updated_at : "2016-09-21 16:37:35" }
Assuming $this->auth->user(); returns this, your iteration foreach ($user as $roles) { is not correct, since $user should be an object not an array. This way you try to go through each property of this object, but I figure you want to iterate of the roles array.
This should be something like:
foreach($user->roles as $role) ... // assuming roles is an array
But roles seems to be a encoded JSON string, so you need to decode it too.
foreach(json_decode($user->roles) as $role) ...
Or directly: $user->roles = json_decode($user->roles)

Answer 2

Try to add
protected $casts = ['roles' => 'array'];
to your User model. That should ensure that the attributes are parsed correctly.
Here is the link to the docs https://laravel.com/docs/5.3/eloquent-mutators#attribute-casting

Answer 3

OK, thanks all for your help. I figured out the answer.
Here's my code that worked finally.
public function authenticate($token = false)
{
$id = $this->getPayload($token)->get('sub');
if (! $this->auth->byId($id)) {
return false;
}
$user = $this->auth->user();
$user->roles = explode(",", $user->roles);
return $user;
}