如果指定了多个类型和有效负载选项，为什么Redux Promise会返回未解决的promise？

问题描述

我很难搞清楚为什么会发生这种情况，但基本上Redux Promise对我来说很好，同时返回的内容如下：

I'm having tough time figuring out why this is happening, but essentially Redux Promise was working fine for me while returning something like:

    return {
      type: STORY_ACTIONS.STORY_SPOTIFY_REQUEST,
      payload: request
    }

但是，我现在需要传递其他信息，如此

However, I now need to pass another information with it like so

    return {
     order: 0, // New field
     type: STORY_ACTIONS.STORY_SPOTIFY_REQUEST,
     payload: request
    }

这导致未解决的承诺而不是数据。我尝试将 order 重命名为 position 或 index 。 ..仍然没有。

This results in an unresolved promise instead of data. I tried renaming order to something like position or index... still nothing.

推荐答案

你应该使用 meta 字段，这是Redux Promise所要求的。 Redux Promise使用Flux标准操作（FSA）来验证操作：

You should use the meta field, which is required by Redux Promise. Redux Promise uses Flux Standard Actions (FSA), which validates the action with this code:

import isPlainObject from 'lodash.isplainobject';

const validKeys = [
  'type',
  'payload',
  'error',
  'meta'
];

function isValidKey(key) {
  return validKeys.indexOf(key) > -1;
}

export function isFSA(action) {
  return (
    isPlainObject(action) &&
    typeof action.type !== 'undefined' &&
    Object.keys(action).every(isValidKey)
  );
}

export function isError(action) {
  return action.error === true;
}

如您所见，有效密钥只有四个保留字。所以你应该将order属性添加到'payload'或者更改为'meta'。

As you can see, there are only four reserved words for valid keys. So you should add the order property to the 'payload' or maybe 'meta' instead.

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