Yii Framework--ajax Request problem

Hello, little friends.

　　Today I'm working on a project that uses asynchronous operations, but always skips the $.ajax () method.

Later check n times, the front end also called to help, or did not find where the wrong.

At last!!! Bright didn't bring his brain to work today (^?) when he found the mistake.

Next, let's say I dug the hole for myself!

Controller:

　　

　　Page:

　　

　　Because Ajax does not add the data parameter!! No data parameter added!! No data parameter added!! (The important thing to say three times!) ) (and be sure to pass the value to the data parameter!) ）

So the controller's if ($_post) {} request does not go at all! the $_post is empty!

Workaround:

　　

　　This is the real judge of whether the post request

Are you going to be bleating, stupid, crying? (°?°)?

Yii Framework--ajax Request problem