When i add a text field to a form and try to set a regular expression 'username' several options are greyed out. So i cannot set the 'Invert match'. It is set to on.
Trying in 'Preview and test' it works as i expected. But when i run in sandbox the inverted in set on. And i cannot enter a correct username.
I think the grayed out field 'Invert match' must be set to off.

Please try and give us a bit more info about your config such as;

• Joomla Version
• Is the issue in sandbox or dev/live environment?
• Cook VersionCook 1.5 or 2.0?
• JS: JQuery or MooTools?
• Form Style: Condensed, Exploded or JDom?
• Features: Reduced, JDom Complete or Maximum?
• DB Automation: Table or Model
• Timeout: 20, 30 or 40secs

One suggestion, you might like to find and edit the file locally:
yoursite/administrator/components/[com_yourcomponent]/models/rules/username.php

Hope this helps!

Gez

Sandbox
Cook 1.5
JQuery
Condensed
Reduced
Table
For my project i have a workaround:
Set username, and after that set cusom. Then i can edit the fields

But for the bug it remain the same. It is only a very small issue, but i think simpel to correct: The grayed out field 'Invert match' must be set to off when i choose 'username'

Does it not work when you switch to custom? I mean, can you not de-select the invert checkbox then?

BTW, if this does allow you to deselect it, you should update the handler to something like customuser just in case you have reference to the original validation rule elsewhere.

Also, try removing the field from any layouts that use it and re-add them.

Hope it helps,

Gez

Can you try again please ?

1. Refresh you page (not the cache)
2. Change the predefined regex for your field
3. Set 'username' again
4. Try in Sandbox.

Should be solved.