Administrator / test_1

  <?php
  
  use yii\db\Schema;
  use yii\db\Migration;
  
  class m151109_085627_update_news_img extends Migration
  {

      public function safeUp()

      {
          $view = <<< MySQL
          update

              w_news
          set img = CONCAT('/storage/news/',img);

  MySQL;
          $this->execute($view);
  
      }
  
      public function down()
      {
          echo "m151109_085627_update_news_img cannot be reverted.\n";
  

          return true;

      }
  
      /*
      // Use safeUp/safeDown to run migration code within a transaction
      public function safeUp()
      {
      }
  
      public function safeDown()
      {
      }
      */
  }