yii\db\ActiveRecord::find PHP Method

    public static function find()
    {
        return Yii::createObject(ActiveQuery::className(), [get_called_class()]);
    }

 public function search($params)
 {
     /* @var $query \yii\db\ActiveQuery */
     $query = $this->baseModel->find();
     $table_inheritance_joined = false;
     $dataProvider = new ActiveDataProvider(['query' => &$query, 'pagination' => ['pageSize' => 10], 'sort' => ['defaultOrder' => ['id' => SORT_DESC]]]);
     if (!$this->load($params)) {
         return $dataProvider;
     }
     $object = Object::getForClass($this->baseModel->className());
     $baseModelTableName = $this->baseModel->tableName();
     $eavJoinsCount = 0;
     $osvJoinsCount = 0;
     foreach ($this->propertyGroups as $groupId => $properties) {
         foreach ($properties as $key => $propertyValue) {
             /** @var \app\properties\PropertyValue $propertyValue */
             $prop = Property::findById($propertyValue->property_id);
             if (empty($this->{$prop->key}) === true && $this->{$prop->key} !== '0') {
                 continue;
             }
             // determine property storage type and join needed table if needed
             if ($prop->is_column_type_stored) {
                 if ($table_inheritance_joined === false) {
                     $table_inheritance_joined = true;
                     $query->join('INNER JOIN', $object->column_properties_table_name . ' ti', 'ti.object_model_id = ' . $baseModelTableName . '.id');
                 }
                 if ($prop->value_type === 'STRING' && $prop->property_handler_id !== 3) {
                     $query->andFilterWhere(['like', 'ti.' . $prop->key, $this->{$prop->key}]);
                 } else {
                     $query->andFilterWhere(['ti.' . $prop->key => $this->{$prop->key}]);
                 }
             } elseif ($prop->is_eav) {
                 $eavJoinsCount++;
                 $eavTableName = 'eav' . $eavJoinsCount;
                 $key = 'key' . $eavJoinsCount;
                 $query->join('INNER JOIN', "{$object->eav_table_name} {$eavTableName}", $eavTableName . '.object_model_id = ' . $baseModelTableName . ".id AND {$eavTableName}.key=:{$key}", [$key => $prop->key]);
                 if ($prop->value_type === 'STRING' && $prop->property_handler_id !== 3) {
                     $query->andFilterWhere(['like', $eavTableName . '.value', $this->{$prop->key}]);
                 } else {
                     // numeric - direct match
                     $query->andFilterWhere([$eavTableName . '.value' => $this->{$prop->key}]);
                 }
             } elseif ($prop->has_static_values) {
                 $osvJoinsCount++;
                 $osvTableName = 'osv' . $osvJoinsCount;
                 $query->join('INNER JOIN', "object_static_values {$osvTableName}", "{$osvTableName}.object_id={$object->id} AND {$osvTableName}.object_model_id={$baseModelTableName}.id");
                 // numeric - direct match
                 $query->andFilterWhere(["{$osvTableName}.property_static_value_id", $this->{$prop->key}]);
             }
         }
     }
     return $dataProvider;
 }