How to restrict special characters in username field

[justinliebregts]

I’d like to restrict users from creating usernames with special symbols such as @,%,# etc. How can I do this? I tried using the Restrict Usernames plugin but it looks like it doesn’t work with your registration system.

Thanks,
Justin

[sourov amin]

Hi,

You can use regex in a custom field to avoid special symbols and use the custom field as username.
regex e.g: ^([a-zA-Z0-9]*)$
This regex will only allow alphabetical and numerical characters but not any special symbols or space.

Thanks.

[STEVE]

I want to do this as well. But how do you define the custom field to be “the” Username field that will actually replace and work in place of the default WordPress Username field? Is it as simple as giving the custom field a field title of “Username”, adding it to the registration form and removing the default WordPress username field from the form?

Thanks.

[justinliebregts]

Thanks Sourov Amin. Works great.

@STEVE
First in the Fields Editor, create your custom field. Name it exactly “Username” and then the meta key modify to user_login. Then on the Forms Editor, remove the default Username field, with your Username (custom) field.

Cheers,
Justin

[STEVE]

@sourov amin
Thanks for the Regex

@justinliebregts
Thanks for the details on creating the field.

And for any other’s who may find this useful, don’t forget to make sure your custom Username field is “Required” and “Unique”.

🙂

[Author]

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