如何过滤关系 - TypeORM

Question

Hello a couple of questions about TypeORM in TypeScript.

Using only Find() I have 2 tables on my DB. Users & Sessions . I would like to get an User and all his Sessions where the column sessions_deleted_at is NULL.

How am I getting an User?

const user = await getRepository(Users)
    .findOne({
        select: ["user_id", "user_email", "user_password"],
        relations: ["sessions"],
        where: {
            user_email: email,
            user_deleted_at: IsNull(),
        }
    })

That is getting the user correctly all the sessions in user.sessions But I just want the sessions where session_delete_at column is NULL. I tried next but not working.

const user = await getRepository(Users)
    .findOne({
        select: ["user_id", "user_email", "user_password"],
        relations: ["sessions"],
        where: {
            user_email: email,
            user_deleted_at: IsNull(),
            
            sessions: {
                session_deleted_at: IsNull()
            }
        }
    })

I am trying to use always find to pull data from the DB and QueryBuilders to Insert/Delete/Update . I guess this is not Bad... Why use QueryBuilders if you have a Find method that 'make things easier'.

Answer 1

If your table columns in DB tables have names like id , email , deleted_at etc. – code below should help you.

const user = await getRepository(Users).createQueryBuilder('user')
  .innerJoin(Sessions, 'session') 
  .select(["user.id", "user.email", "user.password", "user.deleted_at", "session.deleted_at"])
  .where('user.email = :email', { email: <user email here> })
  .addWhere({ 'user.deleted_at': IsNull() })
  .addWhere({ 'session.deleted_at': IsNull() })
  .getOne();

---

Else if your columns named like user_id , user_email , user_deleted_at , session_deleted_at :

const user = await getRepository(Users).createQueryBuilder('user')
  .innerJoin(Sessions, 'session') 
  .select(["user.user_id", "user.user_email",  "user.user_password", "user.user_deleted_at", "session.session_deleted_at"])
  .where('user.user_email = :email', { email: <user email here> })
  .addWhere({ 'user.user_deleted_at': IsNull() })
  .addWhere({ 'session.session_deleted_at': IsNull() })
  .getOne();