Display CPT UI Posts by ID - html

Question

(Sorry for my english, i'm trying to not use Google Translate ^^)
So.. I created a CPT UI "projets" which contain actually 2 posts (FMXD and Siemens) as you can see here :
I want that when i click on FMXD, i have a first page only displaying the post_thumbnail of FMXD. Like This :
As you can see, my page is displaying FMXD and Siemens and i don't understand why...
Actually, i have a single-projets.php :
<?php
/*
Template Name: Projets
Template Post Type: post, page, product, projets
*/
$context = Timber::get_context();
$posts = Timber::get_posts( array(
'post_type' => 'projets',
'posts_per_page' => -1,
'orderby' => 'title',
'order' => 'ASC',
) );
$context['posts'] = $posts;
Timber::render( [ 'single-projets.twig'], $context );
?>
and a single-projets.twig :
<div class="container-fluid">
{% for post in posts %}
<div class="row">
<div class="imgProjets">
<img src="{{ post.thumbnail.src }}" alt="">
</div>
<div class=" offset-9 col-3 title">
<a href="{{ post.link }}">
{{ post.title }}
</a>
</div>
</div>
<div class="row">
<div class="offset-9 col-3">
{{ post.meta('clients') }}
</div>
</div>
<div class="row">
<div class="offset-9 col-3 bg-light text-dark">
See the projects
</div>
</div>
{% endfor %}
</div>
And after that, i want to click on "See the projets" and see the content of FMXD OR Siemens, and not both.
Sorry it was quit long, but i really need your help, i'm really blocked....

Answer 1

This is the kind of code you might want in archive-projets.php, but not in a template for a single post.
This part:
$posts = Timber::get_posts( array(
'post_type' => 'projets',
'posts_per_page' => -1,
'orderby' => 'title',
'order' => 'ASC',
) );
$context['posts'] = $posts;
is getting all projets posts and passing them to the view to be rendered in a loop.
You can replace that entire part with:
$context['post'] = new Timber\Post();
You don't need a loop in your Twig view at all, since there's only one post to render. So just remove {% for post in posts %} and the corresponding {% endfor %}.