<?php
  
  use Illuminate\Database\Migrations\Migration;
  use Illuminate\Database\Schema\Blueprint;
  use Illuminate\Support\Facades\Schema;
  
  return new class extends Migration
  {
      /**
       * Run the migrations.
       *
       * @return void
       */
      public function up()
      {
          Schema::table('messages', function (Blueprint $table) {
              $table->boolean('flag_new')->default(1);
          });
      }
  
      /**
       * Reverse the migrations.
       *
       * @return void
       */
      public function down()
      {
          Schema::table('messages', function (Blueprint $table) {
              $table->dropColumn('flag_new');
          });
      }
  };