guillaumebriday/laravel-blog

use Illuminate\Database\Migrations\Migration;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Support\Facades\Schema;

class CreateLikesTable extends Migration
{
    public function up()
    {
        Schema::create('likes', function (Blueprint $table) {
            $table->nullableMorphs('likeable');
        });
    }
}

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphTo;

class Like extends Model
{
    public function likeable(): MorphTo
    {
        return $this->morphTo();
    }
}

use App\Concern\Likeable;
use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    use Likeable;
}

use App\Models\Like;
use Illuminate\Database\Eloquent\Relations\morphMany;

trait Likeable
{
    public function likes(): morphMany
    {
        return $this->morphMany(Like::class, 'likeable');
    }

    public function like()
    {
        if ($this->likes()->where('author_id', auth()->id())->doesntExist()) {
            return $this->likes()->create(['author_id' => auth()->id()]);
        }
    }
}

use App\Http\Controllers\Controller;
use App\Models\Post;
use Illuminate\Http\Request;

class PostLikeController extends Controller
{
    public function store(Request $request, Post $post)
    {
        return $post->like();
    }
}