How to parse HTML in Yaml files with Silex/Symfony - php

Question

I use yml text files for storing small paragraph of texts for my Silex/Twig website:
use Symfony\Component\Yaml\Yaml;
$loader = Yaml::parse('/path/to/file.yml');
My files look like:
block_2:
id: 2
title: "Title"
body: |
Lore ipsum <strong>legend</strong>
Lore ipsum dolorem etc.
In my Twig file I display variable
<p>{{ block.body }}</p>
Now the output is not as expected as carriage returns and html entities are not properly parsed. Instead the text is rendered in browser
Lore ipsum <strong>legend</strong> Lore ipsum dolorem etc.
How do I properly parse html and line breaks?

Answer 1

By default, twig escapes all input of the templates. This makes your templates very safe.
In some cases however, it is save to output the raw input. This can be done in 4 ways:
Using the escape filter, marking it as safe HTML: <p>{{ block.body|escape('html') }}</p> (best solution)
Using the raw filter: <p>{{ block.body|raw }}</p> (usefull if you are 200% sure it'll be safe)
Using the autoescape tag, marking it as safe HTML (this prevents faulty JavaScript from comming in your code): {% autoescape 'html' %}<p>{{ block.body }}</p>{% endautoescape %} (usefull when doing it for multiple inputs in the same section)
By disabling auto escaping all together for all templates (not recommended)
See also HTML Escaping in the documentation