I've read the docs but found no way to make a filed can only be displayed in "add record" panel and won't be displayed in "edit record" panel. As some data we can add it to db but we can't modify it anymore.

Now, I have a work around:

colModel:         {name: "canNOTChangeAgain", width:100, hidden:true, key:true, hidedlg:true, hideedit:true; editable:true, editrules:{edithidden:true, required:true, integer:true}},

{afterShowForm:afterShowEdit}

function afterShowEdit(id)

{

	$(won't displayed elements hideedit:true) set visible : hidden;

}

Is there an official way or an even better way?