Documentation:
-
Symfony Twig templates:
https://symfony.com/doc/current/templating.html -
Symfony forms:
https://symfony.com/doc/current/forms.html -
Google Map API PHP by Yohann Cerda (GNU GPL):
http://www.ycerdan.fr/developpement/google-maps-api-v3/
https://github.com/Apen/google-maps-v3
February 2018, Maxime MARMONT