Remove unnecessary check $this->posts[$slug] on PostRepository

[samsonasik]

slug seems never be a key, it is the values of the $this->posts data, so mark slug as key always never exists, see

tomasvotruba.com/app/Repository/PostRepository.php

Line 79 in 08a6986

$posts[$post->getId()] = $post;

use loop and compare its value instead per previous check.

[samsonasik]

All checks have passed 🎉 @TomasVotruba I think it is ready.

[TomasVotruba]

Indeed, thanks 👍