cms-token/@core/app/Http/Controllers/Api/PublicRoadmapApiController.php

<?php

namespace App\Http\Controllers\Api;

use App\Http\Controllers\Controller;
use App\Roadmap;

class PublicRoadmapApiController extends Controller
{
    public function index()
    {
        return response()->json([
            'data' => Roadmap::orderBy('milestone_date')->get()
        ]);
    }
}