XF 2.0 How to disallow Spaces or Special Characters on usernames

[ariel1238a]

I searched about it and found several answers but found no one that really fits what I was looking for,
I want to disallow spaces and special characters
But I do want to allow all the rest and the special character _
Example
Disallow:
john 123
john123!

Allow:
xenFORO123
Xenforo_123


How can I do this?
I have about 100 registered forum members some of whom have already registered with the characters I want to ban, what will happen to them?
In addition, how do I announce on the registration page which characters are not allowed.

Thanks a lot!

 

[Paul B]

You will need to use regex for the user registration options - the exact string depends which characters you want to allow/prohibit.

Any existing members would have to be renamed by an administrator.

 

[ariel1238a]

You will need to use regex for the user registration options - the exact string depends which characters you want to allow/prohibit.

Any existing members would have to be renamed by an administrator.

Can you please help me with this? i am not understand how to do it

 

[ariel1238a]

You will need to use regex for the user registration options - the exact string depends which characters you want to allow/prohibit.

Any existing members would have to be renamed by an administrator.

I find this code:
^[a-zA-Z0-9_]*$

But when i am trying to save its say :
Invalid regular expression

Why is it?

 

[AndyB]

I find this code:
^[a-zA-Z0-9_]*$

But when i am trying to save its say :
Invalid regular expression

Why is it?

I find that it works if I surround the regular expression with the # character.

#^[a-zA-Z0-9\_\ ]+$#

 

[ariel1238a]

I find that it works if I surround the regular expression with the # character.

#^[a-zA-Z0-9\_\ ]+$#

Thank you very much!
Do you know how I can write on the registration page that certain characters forbidden ?
Or write which characters are only allowed, How can i do it?
Thanks a lot!

 

[Mr Lucky]

Search for this phrase and edit the text

this_is_name_that_will_be_shown_with_your_messages

 

[AndyB]

Do you know how I can write on the registration page that certain characters forbidden

I suggest you edit the following phrase:

this_is_name_that_will_be_shown_with_your_messages

 

[AndyB]

Ninja'ed by micro seconds.

 

[ariel1238a]

Search for this phrase and edit the text

this_is_name_that_will_be_shown_with_your_messages

I suggest you edit the following phrase:

this_is_name_that_will_be_shown_with_your_messages

Perfect! thanks

 

[ŽivaAkcija]

not works on my forum i just try and register this name MO123aster098

 

[ariel1238a]

Now I tried to register in my forum with me with the user "MO123aster098"
And its works.. Maybe you put the code in the wrong place?

 

[ŽivaAkcija]

i put it inside User name match regular expression:

 

[ariel1238a]

I find that it works if I surround the regular expression with the # character.

#^[a-zA-Z0-9\_\ ]+$#

I tried right now to sign up with user with space for example: user name10
And it completes the registration..
The space characters is still not considered prohibited, the rest of the characters yes

i put it inside User name match regular expression:

Did you use @AndyB code?

#^[a-zA-Z0-9\_\ ]+$#

I dont know, im doing the same as you

 

[ŽivaAkcija]

 

[ariel1238a]

View attachment 179198

What version of XF do you use, I'm on XF 2

 

[ŽivaAkcija]

xf 2.0.7

 

[PatM]

I tried right now to sign up with user with space for example: user name10
And it completes the registration..
The space characters is still not considered prohibited, the rest of the characters yes

Because the regex explicitly allows the space character, use this instead: #^\w+$#

 

[AndyB]

The space characters is still not considered prohibited

That's because this regular expression allows spaces.

#^[a-zA-Z0-9\_\ ]+$#

if you want to not allw spaces use this:

#^[a-zA-Z0-9\_]+$#

 

[ariel1238a]

That's because this regular expression allows spaces.

#^[a-zA-Z0-9\_\ ]+$#

if you want to not allw spaces us this:

#^[a-zA-Z0-9\_]+$#

Thank you very much!