如何在grails域类中覆盖字段为一对多关系的getter和setter?我知道如何覆盖作为单个对象的字段的getter和setter,但是我对Collections有问题。这是我的情况:
我有Entity域类,它有很多标题。现在我想覆盖标题的getter,只获得标志为isActive equals true的标题。我尝试了类似的东西,但它不起作用:
class Entity {
static hasMany = [
titles: Title
]
public Set<Title> getTitles() {
if(titles == null)
return null
return titles.findAll { r -> r.isActive == true }
}
public void setTitles(Set<Title> s) {
titles = s
}
}
class Title {
Boolean isActive
static belongsTo = [entity:Entity]
static mapping = {
isActive column: 'is_active'
isActive type: 'yes_no'
}
}
感谢您的帮助。
答案 0 :(得分:4)
需要参考Set<Title> titles
。
class Entity {
Set<Title> titles
static hasMany = [
titles: Title
]
public Set<Title> getTitles() {
if(titles == null)
return null;
return titles.findAll { r -> r.isActive == true }
}
public void setTitles(Set<Title> s) {
titles = s
}
}