Make file field unique

database/migrations/2016_02_20_155318_add_unique_service_field.php

@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AddUniqueServiceField extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('services', function (Blueprint $table) {
+            $table->string('file')->unique()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('services', function (Blueprint $table) {
+            $table->dropUnique('services_file_unique');
+        });
+    }
+}