c3lf-system-3/database/migrations/2019_11_14_213133_create_events_table.php

<?php

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

class CreateEventsTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('events', function (Blueprint $table) {
            $table->charset = 'utf8';
            $table->collation = 'utf8_unicode_ci';
            $table->bigIncrements('eid');
            $table->string('name');
            $table->string('slug');
            $table->timestamps();
            $table->timestamp('start')->nullable();
            $table->timestamp('end')->nullable();
            $table->timestamp('pre_start')->nullable();
            $table->timestamp('post_end')->nullable();

            $table->unique('slug','uslug');
        });
    }

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