Grails GORM Mongo hasMany 关联未保存

Question

我有一个具有一对多关联的域 class。看起来是这样的：

class FormResponse {

    static String DRAFT = 'Draft'
    static String SUBMITTED = 'Submitted'
    static String REJECTED = 'Rejected'
    static String APPROVED = 'Approved'

    static mapWith = "mongo"

    ObjectId id
    Date dateCreated
    Date lastUpdated
    User createdBy
    User updatedBy
    Form form
    String currentStatus = DRAFT
    List<FormSectionResponse> formSectionResponses
    List<FormResponseComment> formResponseComments

    static hasMany = [ formSectionResponses: FormSectionResponse, formResponseComments: FormResponseComment ]

    static mapping = {
    }

    static constraints = {
        updatedBy nullable: true
    }

}

FormResponseComment 的域 class：

class FormResponseComment {

    static mapWith = "mongo"

    ObjectId id
    Date dateCreated
    Date lastUpdated
    User createdBy
    String comment

    static belongsTo = [FormResponse]

    static mapping = {
    }

    static constraints = {
    }

}

我有一个用于保存此对象的控制器方法，如下所示：

def saveFormResponse(FormResponse formResponse) {
   def saved = formService.saveFormResponse(formResponse)
   respond(saved)
}

及服务方式：

def saveFormResponse(response) {
    return response.save(flush: true, failOnError: true)
}

当我 post 使用此方法时，我可以看到 formResponseComments 列表已按预期填充：

并保存 FormResponseComment：

但是 FormResponse 对象没有收到与子 FormResponseComment 的关联：

那么这里为什么没有关联呢？

Grails 3.3.3.

Answer 1

已通过添加对 FormResponseComment 域的反向引用来修复 class，如下所示：

static belongsTo = [formResponse: FormResponse]

Grails GORM Mongo hasMany 关联未保存

Grails GORM Mongo hasMany association not saved

grails

groovy

grails-orm

mongodb