Grails多对多属于

Question

我想要多对多的关系.然后我必须在一侧指定belongsTo,如:

static belongsTo = Answer

但是我已经将belongsTo指定为Map:这里是Code

class Answer {

    String text
    static hasMany = [users:User, filters:Filter]
    static belongsTo = [question:Question]
}

class User {
    String name
    static hasMany = [answers:Answer]
    static belongsTo = Answer
}

class Filter {

    String name
    static hasMany = [answers:Answer]
    static belongsTo = [user:User]
    //static belongsTo = Answer

但是我无法在Filter中指定所有者,因为我已经拥有了Filter的用户所有者...

我该怎么做呢？

编辑:对不起我自己想出了解决方案:

class Filter {

    String name
    User user
    static hasMany = [answers:Answer]
    static belongsTo = [User, Answer]
}

Answer 1

发布 @user1200271 答案，只是为了从未答复列表中删除。

class Filter {
    String name
    User user
    static hasMany = [answers:Answer]
    static belongsTo = [User, Answer]
}