??? ??? ??? PHP ???????? ???? ??? ???? ? ?? ???? ??? ?? ?????. ??????? ?????? ??? ?????? ?? ???? ??? ???? ?? ?? ??? ?????? ????. ? ????? ???? ?? ???? ??? ??? ??? ?? ??? ??, PHP ???????? ?? ???? ??? ???????.

??? ??? ???? ??????

??? ??? ??? ?? ???? ?? ??? ?? ??????? ??? ???? ???? ????. ?? ??? ???? ???? ??? ??? ?? ??????? ?????? ?? ??? ??? ??? ???? ???? ????? ??? ??? ??? ?? ???? ??? ? ???? ?? ???? ? ?? ?????.

??? ?? ??? ???? ??? ??????

PHP ??????? ??? ??? ??? ???? ??? ?? ? ?? ??? ????.

• ???? ??: ????? ???? ???? ??? ???? ???? ?? ???? ??????.
• ??? ???: ???? ??????? ????? ???? ??? ??? ????? ?? ? ?????.
• ???: ??? ??????? ?? ??? ???? ??? ??? ???? ????? ??? ??? ????.

??? ?? ?? ??

?? ?? ?? ??? ???? ?? ??? ???? ???? ?? ???????. ? ??????? ??? ?? ? ????? ??? ???? ??? ???? ?? PostService ???? ?????. ? ????? ??? ??, ??? ?? ??, ??? ????? ????? ?? ???? ?????.

1??: ??? ??? ??

?? ?? ??? ???? ? ??? ???? ??? PostService ???? ??? ??? ???????. ? ???? app/Services? ?? ????? ??? ???.

<?php

namespace App\Services;

use App\Models\Post;
use Illuminate\Support\Facades\DB;

class PostService
{
    public function createPost(array $postData): Post
    {
        return DB::transaction(function () use ($postData) {
            $post = Post::create($postData);
            $this->updatePostMetadata($post);

            return $post;
        });
    }

    public function updatePostMetadata(Post $post): void
    {
        $post->metadata = json_encode(['likes' => 0, 'shares' => 0]);
        $post->save();
    }
}

2??: ?????? ??? ?? ??

PostService ???? ?????? ?? ????? ??? ?????. ??? ?? ????? HTTP ?? ? ?? ??? ???? ??? ???? ??? ???? ???? ???.

<?php

namespace App\Http\Controllers;

use App\Services\PostService;
use Illuminate\Http\Request;

class PostController extends Controller
{
    protected function postService(): PostService
    {
        return new PostService();
    }

    public function store(Request $request)
    {
        $validatedData = $request->validate([
            'title' => 'required|string|max:255',
            'content' => 'required|string',
            'user_id' => 'required|integer|exists:users,id'
        ]);

        $post = $this->postService()->createPost($validatedData);

        return response()->json($post, 201);
    }
}

3??: ??? ?? ???

???? ??? ???? ????? ????? ??? ??? ????? ?? ?????. ???? HTTP ???? ????? PostService ???? ???? ?? ?? ???? ??? ? ????.

??? PostService ???? ?? ?? ??????.

<?php

namespace Tests\Unit\Services;

use App\Models\Post;
use App\Services\PostService;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class PostServiceTest extends TestCase
{
    use RefreshDatabase;

    protected $service;

    protected function setUp(): void
    {
        parent::setUp();

        $this->service = new PostService();
    }

    public function test_create_post_sets_initial_metadata()
    {
        $postData = [
            'title' => 'Sample Post',
            'content' => 'This is a test post content.',
            'user_id' => 1
        ];

        $post = $this->service->createPost($postData);

        $metadata = json_decode($post->metadata, true);
        $this->assertEquals(['likes' => 0, 'shares' => 0], $metadata);
    }
}

? ???? ???? ?? ?????? PostService ??? ???? ?????? ?????.

??? ??? ? ??? ??

??? PostService? ?? ??? ???? ?? ??(? ?? Post ??)? ?? ?????. ? ??? ??? ??????? ? ???? ?? ???? ??? ?? ?????? ?? ? ??? ???. ?? ?? PostService?? ????? ?? ???? createPost ? updatePostMetadata? ?? ???? ???? ?? ?? ??? ?? ??? ? ?? ?????. ? ??? ?? ?? ??? ?? ??? ??? ???(?: UserService, CommentService)? ???? ? ???? ?? ??? ? ???? ?? ???? ??? ? ????.

??? ?? ?? ??? ?? ?? ?

• ??? ??: ??? ??? ???? ??? ???? ???? ?? ???? ???? ??? ???? ?????.
• ???? ??: ??? ??? ?? ?????? ??? ??? ? ?????? ????? ???? ???? ?????.
• ?? ??: ???? ???? ?? ?? ??? ??? ?? ??? ?? ????? ???? ??? ? ??? ??? ?? ??? ?????.

?? ??? ?? ??? ???? ????

??? ??? ??? ???? ??? ??? ??? ??????? ??????. ????? ??? ??? ?? ??? ????? ??? ???? ??? ??? ??? ???? ???? ? ????.

??

??? ??? ??? ???? ?? ??? ???? ??? ???? ??? ?????. ?? ??? ???? ??? ?? ??????? ?? ? ??? ? ?? ?? ?? ? ???? ??? ?????? ??? ? ????. ??? ?? ????? ?? ?????? ? ??? ??? ???. ??? ?????!

? ??? ???? ?? ??? ??? ?? PHP?? ??? ??? ?? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!