How to add a role to user when having basic User model in Yii2 - yii2

Question

Building a lightweight app using basic installation of Yii2.
I need to assign a role for a user but don't want to have users and user roles stored in database.
How can I set a role for users defined in User->users class?
Default User model and default user definition look like this:
class User extends \yii\base\BaseObject implements \yii\web\IdentityInterface
{
public $id;
public $username;
public $password;
public $authKey;
public $accessToken;
private static $users = [
'100' => [
'id' => '100',
'username' => 'admin',
'password' => 'admin',
'authKey' => 'test100key',
'accessToken' => '100-token',
],

Answer 1

You can use RBAC PhpManager for that that will store all roles info in files instead.
First configure your AuthManager component in config/web.php:
// ...
'components' => [
// ...
'authManager' => [
'class' => 'yii\rbac\PhpManager',
],
// ...
],
By default it uses 3 files to keep the data:
#app/rbac/items.php
#app/rbac/assignments.php
#app/rbac/rules.php
So make sure there is folder rbac in your application's root and that it's write-able by the www process. If you want to place the files somewhere else (or rename them) you can provide the new path in the configuration like:
'authManager' => [
'class' => 'yii\rbac\PhpManager',
'itemFile' => // new path here for items,
'assignmentFile' => // new path here for assignments,
'ruleFile' => // new path here for rules,
],
The rest now is just like in the Authorization Guide.
Prepare roles and permissions (example in console command - by running this command once you set all roles; remember that if you want to run it in console you need also configure console.php with the same component).
Assign role to a user (example - here it's done during the signup but you can do it also in the above command).
Now you can control access with direct check or behavior configuration.