tethys/routes/api.php

<?php

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Route;
use App\Models\Person;

/*
|--------------------------------------------------------------------------
| API Routes
|--------------------------------------------------------------------------
|
| Here is where you can register API routes for your application. These
| routes are loaded by the RouteServiceProvider within a group which
| is assigned the "api" middleware group. Enjoy building your API!
|
*/

Route::middleware('auth:api')->get('/user', function (Request $request) {
    return $request->user();
});

Route::get('/oai', 'Oai\RequestController@identify');

Route::get('/api/persons', function () {
    $request = request();
    $query = Person::query();//->with('group');
    // handle sort option
    //if (request()->has('sort')) {
    if (null !== ($request->input('sort'))) {
        // handle multisort
        $sorts = explode(',', request()->sort);
        foreach ($sorts as $sort) {
            list($sortCol, $sortDir) = explode('|', $sort);
            $query = $query->orderBy($sortCol, $sortDir);
        }
    } else {
        $query = $query->orderBy('id', 'asc');
    }
    if ($request->exists('filter')) {
        $query->where(function ($q) use ($request) {
            $value = "%{$request->filter}%";
            $q->where('first_name', 'like', $value)
                // ->orWhere('nickname', 'like', $value)
                ->orWhere('email', 'like', $value);
        });
    }
    $perPage = request()->has('per_page') ? (int) request()->per_page : null;
    // $pagination = $query->with('address')->paginate($perPage);
    $pagination = $query->paginate($perPage);
    $pagination->appends([
        'sort' => request()->sort,
        'filter' => request()->filter,
        'per_page' => request()->per_page
    ]);
    // The headers 'Access-Control-Allow-Origin' and 'Access-Control-Allow-Methods'
    // are to allow you to call this from any domain (see CORS for more info).
    // This is for local testing only. You should not do this in production server,
    // unless you know what it means.
    return response()
        ->json($pagination)
        ->header('Access-Control-Allow-Origin', '*')
        ->header('Access-Control-Allow-Methods', 'GET');
});