course-site/database/migrations/2021_08_12_221232_create_course_comments_table.php

<?php

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateCourseCommentsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('course_comments', function (Blueprint $table) {
            $table->id();

            $table->integer('user_id');
            $table->integer('course_id');
            $table->integer('course_video_id')->default(0);
            $table->text('content')->nullable(true);

            $table->softDeletes();
            $table->timestamps();
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::dropIfExists('course_comments');
    }
}