How would I disallow special characters in usernames?

cofihouse

6/9/23, 5:16 AM

By default, Drupal 9 allows usernames to have spaces, periods(.), hyphens(-), apostrophes('), underscores(_) and @ symbols.

How would I disallow spaces, periods, apostrophes and @ symbols?

247

0 + 0

users

forms

Patrick Kenny

6/9/23, 5:29 AM

Maybe [User Name Validation module](https://www.drupal.org/project/username_validation) or [User Restrictions module](https://www.drupal.org/project/user_restrictions) can help.

cofihouse

6/9/23, 5:42 AM

Thanks Patrick. Looks like the User Name Validation module does exactly what I need.

Patrick Kenny

6/9/23, 5:52 AM

Great. If it works for you, feel free to answer your own question with the details of how you configured the module.

Score:2

Drupal

cofihouse

6/9/23, 5:56 AM

Used the Username Validation module suggested in Patrick Kenny's answer. Simple configuration of the 'Blacklist Characters' field at admin > configuration > people did the trick!

0 + 0

anonymous

6/9/23, 6:02 AM

There are also a LOT of other questions on here that ask the same or similar question. See the "Related" block to the right ->

cofihouse

6/9/23, 6:12 AM

All of those questions are outdated or have nothing to do with the question of disallowing characters. I did search the website first before posting. Now admittedly, I didn't search "validation" when googling, which is probably why I didn't find the module that solved my problem.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: How would I disallow special characters in usernames?

TH: ฉันจะไม่อนุญาตให้ใช้อักขระพิเศษในชื่อผู้ใช้ได้อย่างไร

RO: Cum aș interzice caracterele speciale în numele de utilizator?

RU: Как запретить использование специальных символов в именах пользователей?

VI: Làm cách nào để tôi không cho phép các ký tự đặc biệt trong tên người dùng?

Post an answer

Most people don’t grasp that asking a lot of questions unlocks learning and improves interpersonal bonding. In Alison’s studies, for example, though people could accurately recall how many questions had been asked in their conversations, they didn’t intuit the link between questions and liking. Across four studies, in which participants were engaged in conversations themselves or read transcripts of others’ conversations, people tended not to realize that question asking would influence—or had influenced—the level of amity between the conversationalists.