javascript - SequelizeJS 用 promise 返回 "fulfillmentValue"

Question

我想使用 SequelizeJS 和 findAll 函数创建一个项目数组，但出现问题。
查询已经成功，但我得到了一个具有一些意外属性的特殊对象(fulFillmentValue、isFulfilled、isRejected，...)。

我的代码:

associatedItems.includingItems = _.map(includeModels, function(includingModel) {
  return includingModel.model.findAll().then( function(items) {
    return {
      items: items,
      reference: includingModel.reference,
      modelName: includingModel.reference.replace(/_/g, '-')
    };
  })
});

Answer 1

下面的函数返回值的 Promise，而不是您想要的实际值。

function(includingModel) {
  return includingModel.model.findAll().then( function(items) {
    return {
      items: items,
      reference: includingModel.reference,
      modelName: includingModel.reference.replace(/_/g, '-')
    };
  })
}

因此，您必须通过以下方式从 Promise 中获取值。

promises = _.map(includeModels, function(includingModel) {
  return includingModel.model.findAll().then( function(items) {
    return {
      items: items,
      reference: includingModel.reference,
      modelName: includingModel.reference.replace(/_/g, '-')
    };
  })
});

Promise.all(promises)
  .then(results => {
    associatedItems.includingItems = results;
  });