Yii-2 how to update a record on basis of id

I want to update my table/model. The scenario is, I have a 'status' column, I want to SET this column to a value then update the model based on the id. I want to do something like update statement.

Update 'table' SET status = 'status value' where id = 'myid'

My action controller look like

$model = $this->findModel($id);
$ogp_id = $model->id;
$status = $model->status;

I have searched for it but couldn't find a solution

Any help would be highly appreciated

This Works for me

I added a function

 protected function findModel($id)
{
    if (($model = Ogpheader::findOne($id)) !== null) {
        return $model;
    } else {
        throw new NotFoundHttpException('The requested page does not exist.');
    }
}

Then access it inside the controller

$model = $this->findModel($id);
$ogp_id = $model->id;

Then while saving my model I have done the following

if($m->save())
{
   $model->status = Ogpheader::$status_titles[1];
   $model->update();
   //my other code
}

This has updated my table and set the column as required