go-zap/database/migrations/2020_07_11_151925_create_role_permission_table.php

<?php

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

/**
 * Class CreateRolePermissionTable
 *
 * @author Andrey Girnik <girnikandrey@gmail.com>
 */
class CreateRolePermissionTable extends Migration
{
    /**
     * Run the migrations.
     * @return void
     */
    public function up()
    {
        Schema::create('role_permission', function (Blueprint $table) {
            $table->unsignedInteger('role_id');
            $table->unsignedInteger('permission_id');
            $table->timestamps();
            $table->unique(['permission_id','role_id']);
            $table->foreign('role_id')->references('id')->on('roles')->onDelete('cascade');
            $table->foreign('permission_id')->references('id')->on('permissions')->onDelete('cascade');
        });
    }

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