update lấy features từ ảnh upload

controllers/ApiController.php

@@ -8,6 +8,7 @@ use yii\filters\VerbFilter;
 use yii\helpers\FileHelper;
 use app\models\CaptureLogs;
 use app\models\ListManagement;
+use app\models\common;
 
 /**
  * CardController implements the CRUD actions for Card model.
@@ -58,7 +59,7 @@ class ApiController extends Controller {
         if (Yii::$app->request->post()) {
             $post = Yii::$app->request->bodyParams;
             $time = date_format(date_create_from_format('Y-m-d H:i:s', $post['time']), 'U');
-            $key = $this->generateRandomString();
+            $key = common::generateRandomString();
             $RootFolder = Yii::getAlias('@webroot') . "/data/uploads";
             $targetPath = $RootFolder . "/face";
             $fileName = "face_" . $key . "_" . $time . ".png";
@@ -95,14 +96,4 @@ class ApiController extends Controller {
         return $allFeatures;
     }
 
-    public function generateRandomString($length = 10) {
-        $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
-        $charactersLength = strlen($characters);
-        $randomString = '';
-        for ($i = 0; $i < $length; $i++) {
-            $randomString .= $characters[rand(0, $charactersLength - 1)];
-        }
-        return $randomString;
-    }
-
 }