Sanitize an optional parameter

[giacomocerquone]

Hi everybody, thanks for your work! This is a great module :)

I have this check: check('url').optional() and I'd like to sanitize it escaping the string.
So I obviously did: check('url').optional().escape() but it returns TypeError from validator.js telling me that it isn't a string (when the value isnt't there right because it's optional)

How can I handle this?

[giacomocerquone]

Duplicate of the closed #205 apparently

[gustavohenke]

Not really; your issue is with express-validator v4, and #205 is from v2 age.

Anyway, I can see the bug in the code; the sanitizers run before the code that filters out optional fields. Thanks for pointing it out.

[giacomocerquone]

I know #205 is from v2, but the user reported a behavior that is exactly the same that I encountered.

Anyway I'd love to have time to make a PR... I'll see if it'll be possible!

[vne-trietdang]

Any update on this? Since sanitize('notExistedField') will throw the same error, too!

[gustavohenke]

Fix published in v4.2.1.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.