I would like to have the regex to validate that user has entered any user name but not administrator. So that anything other than “administrator” is just fine.
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I would like to have the regex to validate that user has entered any user name but not administrator. So that anything other than “administrator” is just fine.
A simple string compare will do this job.
But if you want a regex You can use negative look-ahead assertion as:
Rubular Link
You may want to replace
.*with the regex to match a valid username based on allowed character and/or length requirements.