yii2-redis find() returns empty results - php

Question

I have the following simple model:
<?php
namespace app\models;
use Yii;
use yii\base\Model;
use \yii\redis\ActiveRecord;
use \yii\db\ActiveQuery;
class StatsModel extends ActiveRecord
{
public function attributes()
{
return ['user'];
}
public function rules()
{
return [
['user' : 'string']
];
}
public static function getDb()
{
return \Yii::$app->db_redis;
}
}
\Yii::$app->db_redis; is a config in web.php:
<?php
return [
'class' => 'yii\redis\Connection',
'hostname' => 'localhost',
'port' => 6379,
'database' => 0
];
I do in the redis-cli:
127.0.0.1:6379> select 0
OK
127.0.0.1:6379> hmset key123 user michael
OK
127.0.0.1:6379>
But when i do $test = \app\models\StatsModel::find()->all(); inside layout view i see in the xdebug debugger, that it returns empty set, like there are no records inside redis. I can't understand why, i just added a user and a key to database with index 0. Can someone explain it

Answer 1

ActiveRecord for redis uses dedicated structure and multiple keys to store data about models. Don't expect that you can push some data with random keys and it will be interpreted as active record model. StatsModel::find()->all() does not return anything, because you've not created any model - you've pushed some data to redis, but this is not a active record model. You should use ActiveRecord to save model, if you want to use it with StatsModel::find():
$model = new StatsModel();
$model->id = 1;
$model->user = 'rob006';
$model->save();
$result = StatsModel::find()->all(); // finds one model
Or don't use ActiveRecord and use queries directly:
$result = Yii::$app->db_redis->hget('key123', 'user'); // "michael"