invoiceninja/app/Http/Controllers/QuoteApiController.php

<?php namespace App\Http\Controllers;

use Utils;
use Response;
use App\Models\Invoice;
use App\Ninja\Repositories\InvoiceRepository;

class QuoteApiController extends Controller
{
    protected $invoiceRepo;

    public function __construct(InvoiceRepository $invoiceRepo)
    {
        $this->invoiceRepo = $invoiceRepo;
    }

    public function index($clientPublicId = false)
    {
        $invoices = Invoice::scope()
                        ->with('client', 'user')
                        ->where('invoices.is_quote', '=', true);

        if ($clientPublicId) {
            $invoices->whereHas('client', function($query) use ($clientPublicId) {
                $query->where('public_id', '=', $clientPublicId);
            });
        }

        $invoices = $invoices->orderBy('created_at', 'desc')->get();
        $invoices = Utils::remapPublicIds($invoices);

        $response = json_encode($invoices, JSON_PRETTY_PRINT);
        $headers = Utils::getApiHeaders(count($invoices));

        return Response::make($response, 200, $headers);
    }

  /*
  public function store()
  {
    $data = Input::all();
    $invoice = $this->invoiceRepo->save(false, $data, false);

    $response = json_encode($invoice, JSON_PRETTY_PRINT);
    $headers = Utils::getApiHeaders();
    return Response::make($response, 200, $headers);
  }
  */
}