Pterodactyl-Panel/database/migrations/2017_10_06_215741_ServiceVariablesToEggVariablesConversion.php

<?php

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

class ServiceVariablesToEggVariablesConversion extends Migration
{
    /**
     * Run the migrations.
     */
    public function up()
    {
        Schema::disableForeignKeyConstraints();

        Schema::rename('service_variables', 'egg_variables');

        Schema::table('server_variables', function (Blueprint $table) {
            $table->dropForeign(['variable_id']);

            $table->foreign('variable_id')->references('id')->on('egg_variables')->onDelete('CASCADE');
        });

        Schema::enableForeignKeyConstraints();
    }

    /**
     * Reverse the migrations.
     */
    public function down()
    {
        Schema::disableForeignKeyConstraints();

        Schema::rename('egg_variables', 'service_variables');

        Schema::table('server_variables', function (Blueprint $table) {
            $table->dropForeign(['variable_id']);

            $table->foreign('variable_id')->references('id')->on('service_variables')->onDelete('CASCADE');
        });

        Schema::enableForeignKeyConstraints();
    }
}