如何通过列表保存到数据库中，使用play framework ebean？ [英] How to save through a list into the Database, using play Framework ebean?

问题描述

我尝试通过副标题列表保存，但具有相同的部门ID，但是subheadDepartmentID不同。我如何去做呢？

I'm trying to save through a list of subheads but with the same Department Id but different subheadDepartmentID. How do i Go about it?

subHeadDepartment.department= department;
    for(String thissubhead: ConstructedList){
         SubHead subHead = SubHead.retrievebyName(thissubhead);
         subHeadDepartment.subhead=subHead;
         subHeadDepartment.save();
        }

我在这里的代码只更新循环中的第一个subheadDepartment Id。虽然我想要的是为每个输入的子头创建一个subheaddepartmentId，但所有将在DB.Thanks中有相同的departmentId

The code I have here is updating just the first subheadDepartment Id in the loop.While what i want is to create a subheaddepartmentId for each subhead entered but all will have same departmentId in the DB.Thanks

推荐答案

需要为要创建的每个元素创建一个SubHeadDepartment的新实例：

You need to create a new instance of SubHeadDepartment for each element you want to create:

for(String thissubhead: ConstructedList){
     SubHead subHead = SubHead.retrievebyName(thissubhead);
     SubHeadDepartment subHeadDepartment = new SubHeadDepartment();
     subHeadDepartment.department = department;
     subHeadDepartment.subhead = subHead;
     subHeadDepartment.save();
    }

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