Grails BootStrap：没有方法签名：* .addTo *适用 [英] Grails BootStrap: No signature of method: *.addTo* applicable
问题描述
我有两个域类：用户
class用户{
字符串用户名
字符串密码
字符串电子邮件
日期dateCreated
日期lastUpdated
// static belongsTo = [profile：Profile]
static constraints = {
用户名大小：3..20，unique：true，nullable：false，验证器：{_username - >
_username.toLowerCase（）== _username
}
密码大小：6..100，可为空：false，验证器：{_password，user - >
_password！= user.username
}
电子邮件电子邮件地址：true，blank：false
//配置文件可为空：true
}
}
和配置文件：
class Profile {
字符串名字
字符串中间名
字符串姓氏
字节[]照片
日期dateCreated
日期lastUpdated
static属性= [用户]
静态约束= {
firstName空白：false
middleName可空值：true
姓氏空白：false
photo nullable：true，maxSize：2 * 1024 ** 2
}
}
配置文件只能属于一个用户，而用户只能拥有（或属于？）只有一个配置文件。当我尝试在当前设置中创建 BootStrap.groovy 中的对象时，出现错误，提示 addTo（）方法不存在。我真的不知道我做错了什么。这是我在 BootStrap.groovy 中创建它们的方式：
用户arun = new User（用户名：'arun'，密码：'password'，电子邮件：'arun@email.com'）save（failOnError：true）
Profile arunProfile = new Profile（firstName：'Arun'， lastName：'Allamsetty'）。addToUser（arun）.save（failOnError：true）
指出错误。我确信这很愚蠢。
严格的双向一对一关系是您所要求的： p>
配置文件只能属于一个用户，而用户只能拥有一个配置文件
在域类中主要需要三个修改：
// User.groovy
static hasOne = [profile：Profile]
static constraints = {
profile unique：true
}
//Profile.groovy
用户用户
以上是双向一对一的关系。在创建它们时，您不需要 addTo * 。
用户名：'arun'，密码：'密码'，
电子邮件地址：'arun'，密码：'密码'，
$ b用户arun = 'arun@email.com'，
profile：arunProfile）.save（）
I have two domain classes: User
class User {
String username
String password
String email
Date dateCreated
Date lastUpdated
// static belongsTo = [profile: Profile]
static constraints = {
username size: 3..20, unique: true, nullable: false, validator: { _username ->
_username.toLowerCase() == _username
}
password size: 6..100, nullable: false, validator: { _password, user ->
_password != user.username
}
email email: true, blank: false
// profile nullable: true
}
}
and Profile:
class Profile {
String firstName
String middleName
String lastName
byte[] photo
Date dateCreated
Date lastUpdated
static belongsTo = [User]
static constraints = {
firstName blank: false
middleName nullable: true
lastName blank: false
photo nullable: true, maxSize: 2 * 1024**2
}
}
A profile can belong to only one user and a user can have (or belong to?) only one profile. When I try to create the objects in BootStrap.groovy in the current setup I get an error saying that the addTo() method does not exist. I don't really know what I am doing wrong. This is how I am creating them in BootStrap.groovy:
User arun = new User(username: 'arun', password: 'password', email: 'arun@email.com').save(failOnError: true)
Profile arunProfile = new Profile(firstName: 'Arun', lastName: 'Allamsetty').addToUser(arun).save(failOnError: true)
Can someone please point out the mistake(s). I am sure it's silly.
A strict bi-directional one-one relationship is required as you have requested for:
A profile can belong to only one user and a user can have (or belong to?) only one profile
Three modifications are mainly required in domain classes:
//User.groovy
static hasOne = [profile: Profile]
static constraints = {
profile unique: true
}
//Profile.groovy
User user
Above is a bi-directianl one-one relationship. You do not need addTo* anymore while creating each of them.
Profile arunProfile = new Profile(firstName: 'Arun', lastName: 'Allamsetty')
User arun = new User(username: 'arun', password: 'password',
email: 'arun@email.com',
profile: arunProfile).save()
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