Add a tutorial "How to manage file upload in modern/Symfony pages ?"

[mickaelandrieu]

This is not that hard for Symfony developers but a complete change for PrestaShop developers.

This could be as simple as "How to add a new collection of pictures linked to a Product for a specific sales channel?"

1. Render the form, PHP/Twig and Javascripts
2. How to handle the files (validation + upload at the right place)
3. How to retrieve them (using database references ?)
4. How to display a thumbnail of the image, once the file is uploaded
5. BONUS: How to pre-render a thumbnail once the file has been added to the form (but not yet uploaded to the server)

Some resources

• https://symfony.com/doc/3.4/controller/upload_file.html
• https://symfonycasts.com/screencast/symfony-uploads/form-image
• https://www.novaway.fr/blog/tech/optimisation-images-bundles-vichuploader-liipimagine

WDYT ?

[direwald]

This would be extremely helpful. Currently fighting with trying to upload a custom image to categories and I can't say the Symfony documentation is too helpful when trying to apply it to Prestashop