How to select records from MongoDB in Yii2?

Question

Yii

Actually, I understand how to select records in monge

db.getCollection('params').find({params: {$elemMatch : {scheduler_settings:{$ne:[]}}}})

And how to implement it through Yii2 component?
Tried these options. But it didn't work.

Params::find()->where([
  'params' => [
    '$elemMatch' => [
      'scheduler_settings' => '{$ne:[]}'
    ]
  ]
])->all();

Params::findAll('{params: {$elemMatch : {scheduler_settings:{$exists:true}}}}');

Answer 1

in pure PHP something like this

$data = $_POST["data"];
    $conn = new MongoClient();
    $db = $conn->ETM;
    $collection = $db->ETM;    
    $cursor = $collection->find(['DEALDATE'=>$data]);