Collection unsed variabled deleted

Collection.php

@@ -162,14 +162,9 @@ public function load ($data = null) {
  $finalData = [];
 
  if ($data === null) {
- $data = \Yii::$app->request->post($this->formName) ?: [\Yii::$app->request->post()];
-
- /*
- * If all keys are not empty and are strings - then wrap with an empty array to normalize to
- * ModelName[][attribute]
- */
- if (array_sum(array_map(function ($key) { return !empty($key) && is_string($key); }, array_keys($data))) > 0) {
- $data = [$data];
+ $data = \Yii::$app->request->post();
+ if (isset($data[$this->formName])) {
+ $data = $data[$this->formName];
  }
  } elseif ($data instanceof \Closure) {
  $data = call_user_func($data, $this->model, $this->formName);
@@ -296,7 +291,7 @@ public function update ($runValidation = true, $attributes = null, $options = []
 
  $results = $this->first->getDb()->createCommand()->perform($command, $data);
 
- if ($result === false || Err::isError($result)) {
+ if ($results === false || Err::isError($results)) {
  throw new HiResException(Err::getError($results), Json::encode($results));
  }
 
@@ -355,7 +350,6 @@ public function collectData ($attributes = null, $options = []) {
  * @return bool
  */
  public function hasErrors () {
- $hasErrors = false;
  foreach ($this->models as $model) {
  /* @var $model ActiveRecord */
  if ($model->hasErrors()) {