Nodejs - 从打字稿控制器调用服务

Question

在我的控制器中，我有这个方法可以渲染一个标记文件，将一个对象发送到带有数据的视图（dataView）

export const renderRecoveryData = (
  req: Request | any,
  reply: ResponseToolkit,
  callback: any
): void => {
  const dataView: { [key: string]: any } = {
    id: 1,
    info: getInfo(req, reply, callback),
  };
  templateEngine.renderFromTemplate(
    "./views/private/info/info.marko",
    dataView,
    req,
    reply,
  );
};

在“信息”属性中，我想使用以下方法加载一个对象，该对象从调用两个服务中获取数据：

const getInfo = (req: Request | any, reply: any, callback: any): void => {
  const headers = helpers.setHeaders(req);
  const idNumber = req.yar.get('idNumber');
  async.parallel({
    personalData: (callback: any) => infoService.personalInfo(idNumber, headers, callback),
    addionalInfo: (callback: any) => infoService.addicionalInfo(headers, callback),
  }, (err: any, responses: any) => {
    if (err) {
      return callback(err);
    }
    console.log("response", responses);
    return responses;
  });
};

console.log 正确地向我显示了我想要保存在“dataView”的“info”属性中的对象，但是当我检查视图获取的内容时，“info”属性没有显示，它只是显示“id”属性

我从路由文件中调用“renderRecoveryData”：

  server.route({
    method: "GET",
    path: "/{locale}/private/info/dashboard/step1",
    handler: renderRecoveryData,
  });

可能是什么问题？谢谢

Answer 1

我在代码中看到 2 个问题：

1. getInfo 是异步函数，在控制器中调用时没有添加回调/等待。
2. 在 getInfo 函数中成功时不会调用回调。

将代码更改为如下所示应该可以：

export const renderRecoveryData = (
  req: Request | any,
  reply: ResponseToolkit,
  callback: any
): void => {

  getInfo(req, reply, (err, info) => {
    if(err) {
      // Handle error
    }

    const dataView: { [key: string]: any } = {
      id: 1,
      info,
    };
   
    templateEngine.renderFromTemplate(
      "./views/private/info/info.marko",
      dataView,
      req,
      reply,
    );
  });
  
};

const getInfo = (req: Request | any, reply: any, callback: any): void => {
  const headers = helpers.setHeaders(req);
  const idNumber = req.yar.get('idNumber');
  async.parallel({
    personalData: (callback: any) => infoService.personalInfo(idNumber, headers, callback),
    addionalInfo: (callback: any) => infoService.addicionalInfo(headers, callback),
  }, (err: any, responses: any) => {
    if (err) {
      return callback(err);
    }
    console.log("response", responses);
    return callback(err, responses);
  });
};

Answer 2

我认为问题在于您返回响应的方式，我认为您应该将响应传递给回调

const getInfo = (req: Request | any, reply: any, callback: any): void => {
  const headers = helpers.setHeaders(req);
  const idNumber = req.yar.get("idNumber");
  async.parallel(
    {
      personalData: (callback: any) =>
        infoService.personalInfo(idNumber, headers, callback),
      addionalInfo: (callback: any) =>
        infoService.addicionalInfo(headers, callback),
    },
    callback // this is better
  );
};