Question

我正在尝试提取用户数据，然后在另一个函数中使用返回的结果。我正在尝试使用 async / await 来实现它，但是没有成功。

  const userAllowedToDeploy = (user_id, project) => {
    controller.storage.users.get(user_id, async function(err, user) {
      result = await (some calculations related to returned user here);
      return result;
    });
   });

  controller.hears(['^deploy (\\w+)'], 'direct_mention, mention', function(bot, message) {
    let channel = message.channel;
    let project = message.match[1];

    result = userAllowedToDeploy(message.user, project)
    console.log('final result: ' + result);

但是由于某种原因，最终结果是 undefined

Answer 1

我设法使其与Promises一起使用。但是我仍然很想知道如何使用async / promise重写它。

  const userAllowedToDeployWithPromise = (user_id, project, env) => {
    return new Promise(function(resolve, reject) {
      controller.storage.users.get(user_id, function(err, stored_user) {
        let result = (some calculations from stored_user here);
        resolve(result);
      });
    });
  };

  controller.hears(['^deploy (\\w+) (\\w+)'], 'direct_mention, mention', function(bot, message) {
    let channel = message.channel;
    let project = message.match[1];

    let allowed_promise = userAllowedToDeployWithPromise(message.user, project);

    allowed_promise.then(function(allowed) {
      if(allowed) {
        deployProject(project);
      } else {
        // some message here
      }
    });

Botkit-异步提取用户数据

1 个答案: