grails - Grails设置脚手架下拉框的默认值

Question

是否可以在Grails中为生成的(脚手架)状态下拉框设置默认值？我希望这是我可以在域类或 Controller 类中执行的操作:

class State {

    String name
    String code

    static mapping = { sort name: "asc" }

    String toString() {
        return this.name;
    }
}

class Person implements Comparable {

    String firstName
    String lastName
    State state

    String toString() {
        return this.lastName + ", " + this.firstName;
    }
}

我试过在State域类中显式设置 String name="Pennsylvania"和 String code="PA"，但是没有运气。我在Bootstrap.groovy中引导状态数据:

def init = { servletContext ->
    if (!State.count()) {
        new State(name: "Alabama", code:"AL").save(failOnError: true)
        new State(name: "Alaska", code:"AK").save(failOnError: true)
        new State(name: "Arizona", code:"AZ").save(failOnError: true)
        new State(name: "Arkansas", code:"AR").save(failOnError: true)
        ....
    }
}

更新:

PersonController.groovy:

def create() {
    // [personInstance = new Person(params)]
    def personInstance = new Person(params)
    personInstance.state = new State("Pennsylvania", "PA")
    [personInstance: personInstance]
}

State.groovy:

public State(String name, String code) {
    this.name = name
    this.code = code
}

Answer 1

如果要为“新Person”页面设置状态下拉列表的默认值，则可能要使Person的“state”成员的默认值为在Bootstrap中创建的“Pennsylvania”状态。

实际上，我认为一种更好的方法是实际生成PersonController，然后修改“create”闭包以设置Person.state的初始值。