Altered user_name column in emails table

added migration to make user_name column as nullable in emails table

database/migrations/2018_08_13_075015_alter_emails_table_make_username_column_nullable.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class AlterEmailsTableMakeUsernameColumnNullable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('emails', function (Blueprint $table) {
+            $table->string('user_name')->nullable()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('emails', function (Blueprint $table) {
+            $table->string('user_name')->nullable(false)->change();
+        });
+    }
+}