add files to project

migrations/m170619_135243_create_links_table.php

@@ -0,0 +1,30 @@
+<?php
+
+use yii\db\Migration;
+
+/**
+ * Handles the creation of table `links`.
+ */
+class m170619_135243_create_links_table extends Migration
+{
+    /**
+     * @inheritdoc
+     */
+    public function up()
+    {
+        $this->createTable('links', [
+            'id' => $this->primaryKey(),
+            'user_id' => $this->integer(),
+            'code' => $this->string()->unique(),
+            'tm' => $this->timestamp()->defaultExpression('NOW()')
+        ]);
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function down()
+    {
+        $this->dropTable('links');
+    }
+}