problem found while creating a new CRUD page. The I variable is used in the 
 edit.component.html template, so why change it to the I variable specifically? why not use the default record? As shown below: 
 
paramsName
table.js    145-149
paramsName 
 this code is located in delon.module.ts 
 Please do not hesitate to comment on how to use ng-alain for the first time 
