How to create global object Laravel - php

Question

I'm using Laravel 5.6 and Instagram API library.
To work with this Instagram API I need to create object $ig = new \InstagramAPI\Instagram(). And then for getting any user's information I must use $ig->login('username', 'password') every time.
So I don't want to use this function all the time. The first I want to create a global variable which will contain $ig = new \InstagramAPI\Instagram(). However, I don't know how to correctly do it.
I tried to use singleton:
$this->app->singleton(Instagram::class, function ($app) {
Instagram::$allowDangerousWebUsageAtMyOwnRisk = true; // As wiki says
return new Instagram();
});
When I called $ig->login('name', 'pass') in any method all user profile's information changed in this object, but then if I call dd($ig = app(Instagram::class)) in another Controller method I see that previous data did not save. "WTF?" - I said.
Someone tells me that singleton just promise me that there won't be created the same object, but it does not save any changes.
I tried to use sessions:
However, when I tried to set variable with object as value anything did not happen.
$ig = new \InstagramAPI\Instagram();
session(['ig' => $ig]);
I think it's because of I tried to put a large object. And from the other hand it's not secure method!
Just let me know:
How can I create an object which I could use in every method with saving change for the next actions?

Answer 1

When I called $ig->login('name', 'pass') in any method all user profile's information changed in this object, but then if I call dd($ig = app(Instagram::class)) in another Controller method I see that previous data did not save.
That is the correct behavior. When a new request is sent to Laravel, a new instance of the Instagram is created. I'm not sure if you understand the meaning of a singleton but in terms of Laravel, there is one instance per HTTP request.
Since the Instagram API you're using does not contain functionality to relogin, I created a class (that would be place in the app/Classes folder).
<?php
namespace App\Classes;
use InstagramAPI\Instagram;
use InstagramAPI\Response\LoginResponse;
class CustomInstagram extends Instagram {
public function relogin(LoginResponse $response) {
$appRefreshInterval = 1800;
$this->_updateLoginState($response);
$this->_sendLoginFlow(true, $appRefreshInterval);
return $this;
}
}
Change the singleton instance so it uses the App\Classes\CustomInstagram class.
$this->app->singleton(Instagram::class, function ($app) {
Instagram::$allowDangerousWebUsageAtMyOwnRisk = true; // As wiki says
return new App\Classes\CustomInstagram();
});
In order to use the Instagram object with an authenticated user, the login information will need to be persisted some how. This would be placed where the login is occurring.
try {
$response = app(Instagram::class)->login($username, $password);
if ($response->isTwoFactorRequired()) {
// Need to handle if 2fa is needed (we're not completely logged in yet)
}
// Can use session to persist \InstagramAPI\Response\LoginResponse but I'd recommend the database.
session(['igLoginResponse' => serialize($response)]);
} catch (\Exception $e) {
// Login failed
}
Then create a middleware to relogin the user to Instagram (if the login response exists). You need to register this as described here. Then, the Instagram singleton can be used in your controller.
namespace App\Http\Middleware;
use Closure;
use InstagramAPI\Instagram;
class InstagramLogin
{
/**
* Handle an incoming request.
*
* #param \Illuminate\Http\Request $request
* #param \Closure $next
* #return mixed
*/
public function handle($request, Closure $next)
{
$responseSerialized = session('igLoginResponse');
if (!is_null($responseSerialized)) {
$ig = app(Instagram::class);
$response = unserialize($responseSerialized);
$ig->relogin($response);
}
return $next($request);
}
}