Angular http.post 嵌套 json

Angular http.post nested json

我正在使用带有 FOSUserBundle 的 Angular5 和 Symfony 3.4。

我有类似的东西:

register(username: string, email: string, first: string, second: string)
{
  return this.appHttp.post('register', {username, email, first, second}).subscribe(
    data => {
       this.appHttp.logRequest(data);
    }
  );
}

我需要发送给 API 的是格式化的 json,例如:

{
  "email": "email@test.com",
  "username" : "userTest",
  "plainPassword" : {
    "first" : "123",
    "second": "123"
   }
}

目前,我的 json 看起来像:

{
  "email": "email@test.com",
  "username" : "userTest",
  "first": "123",
  "second": "123",
}

我怎样才能 post 需要 json ?

谢谢!

只需更改:

{username, email, first, second}

{username, email, plainPassword : {first, second} }