Yii2: $loadedModules does not show all modules - php

Question

Created module "forum" - exactly as written here. Then created nested module "admin":
//"Module.php" in '#app/modules/forum'
namespace app\modules\forum;
class Module extends \yii\base\Module {
public function init() {
parent::init();
\Yii::configure($this, require(__DIR__ . '/config.php'));
$this->modules = [
'admin' => [
// here is my nested module
'class' => 'app\modules\forum\modules\admin\Module',
],
];
}
}
Also created a non-nested module "games" (in the same way) and wrote in "web.php" (main config-file):
'modules' => [
'forum' => [
'class' => 'app\modules\forum\Module',
],
'games' => [
'class' => 'app\modules\games\Module',
],
'admin' => [
'class' => 'app\modules\forum\modules\admin\Module',
],
],
But when I tried to output:
// codeline is written in application view, not in module view
var_dump(array_keys(\Yii::$app->loadedModules));
I saw only these modules:
array(4) {
string(19) "yii\web\Application"
string(16) "yii\debug\Module"
string(14) "yii\gii\Module"
string(24) "app\modules\forum\Module"
}
"Games" and nested "admin" modules are absent! Although doc says:
$loadedModules property keeps a list of loaded modules, including both direct children and nested ones, indexed by their class names.
But I could get only "forum" myself-created module. What am I understanding wrong?

Answer 1

As documentation says:
$loadedModules property keeps a list of loaded modules
which mean that it keeps modules that loaded in current request. E.g. if you are on module's page example.com/forum/ it will contain app\modules\forum\Module but if you on example.com/site where site is controller's name $loadedModules will contain only modules that are set in $bootstrap config property.
To get list of all modules call Yii::$app->modules. Note that $loadedModules contains app itself since it extends Module class. Yii::$app->modules contains all modules from app config modules property.