如何在grails域类中使用arraylist
我不熟悉grails。我有以下要求,如何实现如何在grails域类中使用arraylist,grails,Grails,我不熟悉grails。我有以下要求,如何实现 class File { list<Employee> listOfCaseWorkersWhoHaveWorkedOnThisFile; <<<---- how to achieve this ? static constraints = { } } class Employee { list<File> filesOwnedByHim <<<<
class File {
list<Employee> listOfCaseWorkersWhoHaveWorkedOnThisFile; <<<---- how to achieve this ?
static constraints = {
}
}
class Employee {
list<File> filesOwnedByHim <<<<<-------- also this ?
static constraints = {
}
}
类文件{
列出处理过该文件的CaseWorkers列表;您可以使用hasMany
,它是类之间的一对多关联
class File {
static hasMany = [employees: Employee]
static constraints = {
}
}
class Employee {
static hasMany = [files: File]
static constraints = {
}
}
然后,您可以轻松地对其使用GORM操作(addTo、findBy等)
参考: