source: database/migrations/2019_10_25_180620_create_post_securities_table.php

<?php

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

class CreatePostSecuritiesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::create('post_securities', function (Blueprint $table) {
            $table->bigIncrements('id');
            $table->unsignedInteger('role_id');
            $table->string('phase_ids');

            $table->foreign("role_id")
                ->references("id")
                ->on("roles")
                ->onDelete("cascade");

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

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