text: <?php
  
  use Illuminate\Database\Migrations\Migration;
  use Illuminate\Database\Schema\Blueprint;
  use Illuminate\Support\Facades\Schema;
  
  class AddEditedToCommentsTable extends Migration
  {
      /**
       * Run the migrations.
       *
       * @return void
       */
      public function up()
      {
          Schema::table('comments', function (Blueprint $table) {
              $table->timestamp('edited_at')->nullable();
          });
      }
  
      /**
       * Reverse the migrations.
       *
       * @return void
       */
      public function down()
      {
          Schema::table('comments', function (Blueprint $table) {
              //
          });
      }
  }
  