Level 102
You could bind it as a singleton in the service container
Jul 7, 2022
6
Level 4
Global variable across Controllers, Views, Services ... computed just once
I have variable $account_value that is used in Controller, View, random Classes, AppServiceProvider. Its value has to be calculated/retrieved from database.
What is the best approach to calculate its value "globally" just once. And then use it in Controller, View, Classes, AppServiceProvider ... ? Calculate just once on each request.
Level 4
That's my current solution. But I run into a issue, where singleton called inside AppServiceProvider will create its own instance.
// Conversion class
class Conversion {
public class __construct(){
Log::debug('i was called');
}
}
If app(Conversion::class)->get()['id'] used only in Controllers/Views log will contain only one message.
But if also used in AppServiceProvider it will run twice!
//AppServiceProvider.php
public function boot()
{
$this->app->singleton(Conversion::class, function () {
return new Conversion();
});
// if I add this line Log will contain "i was called" twice
view()->share('app_currency_id', app(Conversion::class)->get()['id']);
Level 102
@andyandy you can try with a view composer as it uses a function and should be called after bootstrapping
Level 122
or write a helper that gets it from session
Level 102
Or you can use a static property on a helper class (kinda what singletons are under the hood)
Or put it in cache using the array driver (if it only should be there for 1 request)
Level 4
I like idea with Cache. Thanks!
Please or to participate in this conversation.