add wate to inventory

console/migrations/m170404_060114_alter_table_inventory_item_add_colum_count_waste.php

@@ -0,0 +1,30 @@
+<?php
+
+use yii\db\Schema;
+use yii\db\Migration;
+
+class m170404_060114_alter_table_inventory_item_add_colum_count_waste extends Migration
+{
+    public function up()
+    {
+        $this->addColumn("inventory_item", "count_waste", "int default 0");
+    }
+
+    public function down()
+    {
+        echo "m170404_060114_alter_table_inventory_item_add_colum_count_waste cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use safeUp/safeDown to run migration code within a transaction
+    public function safeUp()
+    {
+    }
+
+    public function safeDown()
+    {
+    }
+    */
+}