Grails3.3框架 脚手架自动生成Controller和View 标准写法

官方API3.3文档标准写法：

Examples
An example of enabling "dynamic" scaffolding:

class BookController {
    static scaffold = Book  // static scaffold = true  form is not supported in grails 3.0 and above

}

以前的写法1 只能生成controller 不能生成view层
class AirlineController {
    def scaffold = Airline
}
以前的写法2 已经被抛弃
class AirlineController {
   static scaffold = true
}