Extjs form hidden textfield value assignment is not easy to use

A strange problem occurs. When the form in ExtJs is submitted for creation, an operator ID is obtained from the session, and a component with the xtype as hidden is added to the form, write a value for it, and it appears strange. There is no problem in one of the machines. If you change the machine, you cannot assign a value to it, I am depressed. I used a method to solve this problem, but I always felt it was uncomfortable to solve this problem. Have you ever encountered this problem? Please give me some advice.

Let's talk about my solution first.

Add an ID to the hidden component and trigger a method when the form is submitted.Ext. getCmp ('id'). setValue (userId );Effective. You can submit the data.