首页 > 解决方案 > 从模块中的 Promise 调用返回值

问题描述

我有这个应用程序调用 API 并从返回的对象中提取游戏 ID。

/* jshint ignore:start */
        axios
          .get(
            `https://api.mysportsfeeds.com/v1.2/pull/nba/${seasonName}/scoreboard.json?fordate=${
              date.yesterday
            }`,
            config
          )
          .then(response => {
            this.sports_feeds_data = response.data.scoreboard.gameScore;
            return this.sports_feeds_data;
          })
          .then(response => {
            // Fill up array with all the game ID's for today's games
            // This will be used to retrieve the Box Scores later
            response.forEach(function(item, index) {
              gameIDs[index] = item.game.ID;
            });

            return gameIDs;
          })
          // Now call getBoxScores to retrieve box scores
          .then(gameIDs => {
            test = getBoxScores(gameIDs); // **No value returned**
            console.log(test);
          })
          .catch(error => {
            console.log(error);
            this.errored = true;
          });
        /* jshint ignore:end */

现在我们进入 getBoxScores 并获取 boxScores:

let boxScores = [];
let promises = [];

/* jshint ignore:start */
const getBoxScores = gameIDs => {
  gameIDs.forEach(function(item) {
    let myUrl = `https://api.mysportsfeeds.com/v1.2/pull/nba/2018-2019-regular/game_boxscore.json?gameid=${item}`;

    promises.push(
      axios({
        method: "get",
        headers: {
          Authorization:
            "Basic NzAxMzNkMmEtNzVmMi00MjdiLWI5ZDYtOTgyZTFhOnNwb3J0c2ZlZWRzMjAxOA=="
        },
        url: myUrl,
        params: {
          teamstats: "none",
          playerstats: "PTS,AST,REB,3PM",
          sort: "stats.PTS.D",
          limit: 3,
          force: true
        }
      })
    );
  });

  axios
    .all(promises)
    .then(function(results) {
      results.forEach(function(response) {
        boxScores.push(response.data.gameboxscore);
      });

      return boxScores;
    })
    .then(function(boxScores) {
      console.log(boxScores);
      return boxScores;
    });
};
/* jshint ignore:end */

module.exports = getBoxScores;

问题: 1. 无法从 getBoxScores.js 返回 boxScores 数组。

  1. 当我进行 console.log 测试时,数组中什么也没有。控制台记录 boxScores 我看到我已解决的带有值的承诺。任何见解表示赞赏。谢谢...

更新的分辨率:

.then(async gameIDs => {
        // Check if boxscores have been retrieved on previous tab click
        this.sports_feeds_boxscores.nba =
          this.sports_feeds_boxscores.nba || (await getBoxScores(gameIDs));
      })

在 getBoxScores 中:

// axios.all returns a single Promise that resolves when all of the promises passed
// as an iterable have resolved. This single promise, when resolved, is passed to the
// "then" and into the "values" parameter.
await axios.all(promises).then(function(values) {
  boxScores = values;
});

return boxScores;


};


    module.exports = getBoxScores;

上述更新现在有效...

标签: javascriptpromise

解决方案


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