Assossiate UID Authentication with key user Database


#1

When I create a user, I use the method Auth to create email and password in authentication and the same time call another service then I save this user in Database
my authprovider.ts

  createUser(user: any, path: any) {
    return this.afu.auth.createUserWithEmailAndPassword(user.email, user.password)
                                .then((res) => {
                                  return this.service.save(user, path)
                                });
  }

this service save send to another provider that to save in Database this user created

  save(user: any, path: string) {
    return new Promise((resolve) => {
      this.db.list(this.PATH + path)
              .push(user)
              .then(() => resolve())
    })
  }

Now, how to assossiate UID of authentication with Database