How to cache model attributes in Laravel - laravel

Question

In my current configuration, a user's email is stored on a remote server that I need to hit with a curl quest.
Luckily, I only need the email once a day when a certain process runs. However, when that process does run it will need to reference the email multiple times.
This is the current accessor I have set up for email. The problem is the curl request is being called every time I use $user->email. What's the best way to avoid this?
in UserModel:
public function getEmailAttribute(){
$curl = new Curl;
$responseJson = $curl->post('https://www.dailycred.com/admin/api/user.json',array(
'client_id'=>getenv('dailycredId')
,'client_secret'=>getenv('dailycredSecret')
,'user_id'=>$this->id
));
$response = json_decode($responseJson);
return $response->email;
}

Answer 1

private $cached_email = false;
public function getEmailAttribute(){
if ($this->cached_email){
// if set return cached value
return $this->cached_email;
}
// get the email
$curl = new Curl;
$responseJson = $curl->post('https://www.dailycred.com/admin/api/user.json',array(
'client_id'=>getenv('dailycredId')
,'client_secret'=>getenv('dailycredSecret')
,'user_id'=>$this->id
));
$response = json_decode($responseJson);
// cache the value
$this->cached_email = $response->email;
// and return
return $this->cached_email;
}
Depending on your use case make adjustments (ie. session, cache , static property...).

Answer 2

Extend a the Eloquent Model class
namespace App\Models\Utils;
use Illuminate\Database\Eloquent\Model as OldModel;
class MyModel extends OldModel
{
private $cachedAttributes = [];
public function getCachedAttribute(string $key, Callable $callable)
{
if (!array_key_exists($key, $this->cachedAttributes)) {
$this->setCachedAttribute($key, call_user_func($callable));
}
return $this->cachedAttributes[$key];
}
public function setCachedAttribute(string $key, $value)
{
return $this->cachedAttributes[$key] = $value;
}
public function refresh()
{
unset($this->cachedAttributes);
return parent::refresh();
}
}
make your class
class ElementWithEmail extends MyModel
{
const ATTRIBUTE_KEY_FOR_EMAIL = 'Email';
public function getEmailAttribute(){
$key = self::ATTRIBUTE_KEY_FOR_EMAIL;
$callable = [$this, 'getEmail'];
return $this->getCachedAttribute($key, $callable);
}
protected function getEmail()
{
$curl = new Curl;
$responseJson = $curl->post('https://www.dailycred.com/admin/api/user.json',array(
'client_id'=>getenv('dailycredId')
,'client_secret'=>getenv('dailycredSecret')
,'user_id'=>$this->id
));
$response = json_decode($responseJson);
return $response->email;
}
}
Call it from your code
$element = new ElementWithEmail();
echo $element->email;