从商店中选择复杂数据

Question

我的商店：

{
  entities: {
    posts: {
      6: {
        id: 1,
        title: 'Some title',
        account_id: 2,
        ...
      }
    }
    comments: {
      1: {
        id: 1,
        name: 'Some name',
        ...
      }
    }
    accounts: {
      1: {
        id: 2,
        name: 'Antonio',
        ...
      }
    }
  }
  pagination: {
    // Comments by POST ID
    comments: {
      6: {
        ids: [1,2, ..., 6],
        isFetching: false,
        ...
      }
    }
  }
}

对于每个帖子页面，我都有一个评论部分，其中我显示所有评论。评论组件包括作者username和评论详细信息。评论和作者作为实体（comments，accounts）单独存储在商店中，并且仅通过 FK （account_id）连接。我需要的是显示帖子的所有评论，包括作者信息（username）。

所以，我决定为此创建2个（reselect）选择器：

const getComments = state => state.entities.comments;
const getCommentIds = (state, props) => {
  const id = props.match.params.post;
  const comments = state.pagination.comments[id];

  return (comments && !comments.isFetching) ? comments.ids : [];
}
const getUsers = state => state.entities.accounts;

export const getPostComments = createSelector(
  [ getComments, getCommentIds ], (comments, ids) => {
    return ids.map(id => comments[id]);
  }
)

export const getCommentsWithAuthors = createSelector(
  [ getPostComments, getUsers ], (comments, users) => {
    return comments.map(comment => {
      const { username } = users[comment.account_id];

      return Object.assign({}, comment, { username });
    });
  }
)

mapStateToProps 功能：

const mapStateToProps = (state, props) => {
  const id = props.match.params.post;
  const { posts } = state.entities;

  return {
    post: state.entities.posts[id],
    comments: getCommentsWithAuthors(state, props)
  }
}

一切正常，但我想知道这是否是常见方法，或者我的state对象的架构可能很差，这就是我遇到这样一个解决方案的原因？