init

vendor/yiisoft/yii2/views/migration.php

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+<?php
+/**
+ * This view is used by console/controllers/MigrateController.php.
+ *
+ * The following variables are available in this view:
+ */
+/* @var $className string the new migration class name without namespace */
+/* @var $namespace string the new migration class namespace */
+
+echo "<?php\n";
+if (!empty($namespace)) {
+    echo "\nnamespace {$namespace};\n";
+}
+?>
+
+use yii\db\Migration;
+
+/**
+ * Class <?= $className . "\n" ?>
+ */
+class <?= $className ?> extends Migration
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function safeUp()
+    {
+
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function safeDown()
+    {
+        echo "<?= $className ?> cannot be reverted.\n";
+
+        return false;
+    }
+
+    /*
+    // Use up()/down() to run migration code without a transaction.
+    public function up()
+    {
+
+    }
+
+    public function down()
+    {
+        echo "<?= $className ?> cannot be reverted.\n";
+
+        return false;
+    }
+    */
+}