laravel-backend/app/Services/ContributionService.php

<?php

namespace App\Services;

use App\Repositories\Contribution;

class ContributionService
{
    private $contributionRepository;

    public function __construct(Contribution $contributionRepository)
    {
        $this->contributionRepository = $contributionRepository;
    }

    public function save(array $data)
    {
        if (isset($data['id'])) {
            $contribution = $this->contributionRepository->findOrFail($data['id']);
            $contribution->update($data);
        } else {
            $contribution = $this->contributionRepository->create($data);
        }

        return $contribution;
    }

    public function delete($id)
    {
        $contribution = $this->contributionRepository->findOrFail($id);
        $contribution->delete();
    }

    public function get($id)
    {
        return $this->contributionRepository->findOrFail($id);
    }

    public function getAll()
    {
        return $this->contributionRepository->all();
    }

    public function with(array $children)
    {
        return $this->contributionRepository->with($children)->get();
    }

    public function getOneWith($id, array $children)
    {
        return $this->contributionRepository->with($children)->findOrFail($id);
    }
}