Username UNIQUE

Hi

I notice that with CB Query Field we can have an unique 'alias' , and the validation operate without saving the form. (just after a tab for example)

Is is possible to have the same thing with the 'username' who is already 'unique' but validation operate AFTER saving the form.
(I try the tutorials but it doesn't work)

Thank you

You need to edit the Username field and add Query Validation provided by CB Query Field to query the database and check if the username exists then validate on empty results. Example configuration as follows.

Query: Validate On: Empty Results
Ajax Validation: Enabled

I've already tried this and I obtain message display (see the 2 captures).

What's wrong ?

Thank you

CB 2.0.7 Joomla 3.4 CB Query 4.0.5

Username and Email fields are both already unique. There's also a built in username checker that you can turn on within CB > Configuration > Registration and enabling "Ajax Username Checker". The only reason to use CB Query Field is for a more customized check or error display.

As for the query field results your site has errors or something is forcing changes to the buffer or header. Check server error log for notices, warnings, or errors. If you see any then they need fixed. If they output to buffer (e.g. echo) they will break the JSON response. It's similar to why CB Gallery photos would not display for you. Will look into clearing the buffer for next release, but your install should not depend on ajax endpoints having to do this.

forge.joomlapolis.com/issues/5194