grails中list链表操作

1 grails中list链表访问中自动加1

<g:each in="${repositoryInstanceList}" status="i" var="repositoryInstance"> 

XX        

</g:each>


/*status是个计数器,从0开始计数，取值为*/

2 grails中domain类中多对多的操作

user类中

static hasMany = [authorities: Role]
static belongsTo = Role

Role中

static hasMany = [people: User]
String name;

user实例

def userInstance = User.findByUsername(username)

判断user中该用户的角色

userInstance.authorities.name.contains("admin")

或者动态遍历

for( def a:userInstance.authorities)
{
    System.out.println("a="+a.authority);


}