Advanced search: searching for non-null values

Hi all,

i am new to yii and created a basic application a few days ago. I´ve customized some things so it fits my requirements.

Because i am a absolute php beginner, it´s hard for me to understand all of the code.

I´m looking for a way to search for non-Null-values in Advanced search. How can I implement this?

Any help is welcome!


Good morning I have been trying it a couple of days and I have not got a good result, I am a beginner in php too …

As you say, "Any help is welcome!"