add proper migration for currentfiles view

database/migrations/2020_01_18_001554_add_currentfiles_view.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddCurrentfilesView extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        //
+        DB::statement('create view currentfiles as
+            select `f`.`iid` AS `iid`, `f`.`hash` AS `hash`
+            from `files` `f`
+            where `f`.`created_at` = (select max(`files`.`created_at`)
+                from `files`
+                group by `files`.`iid`
+                having `files`.`iid` = `f`.`iid`);');
+
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        //
+    }
+}