使用 axios 的 redux-thunk 的通用数据加载器

Question

我正在开发一个有很多异步操作的应用程序。我想使用 redux-saga，但大多数人坚持要继续使用 redux-thunk。在 redux-thunk 中，在每个动作中，我们必须使用 then、dispatch、catch 等进行异步操作。这使得看起来动作如此混乱，并且会重复大量代码。我想创建一个通用的 dataLoader 来使用 redux-thunk 和 axios 但不能同时考虑 post（可能是令牌）和 get 选项。

这是我的尝试：

export class Company {
/**
* Generic api data loader
*/
static dataLoader(apiUri, onSuccess, onError, data, ...actionArguments) {
  const requestURL = `${API_BASE}${apiuri}`;
  try {
    let options;
    if (data !== undefined) {
      // if we have data to post
      options = {
      method: 'POST',
      url: requestURL,
      body: JSON.stringify(data),
      headers: {
         'Content-Type': 'application/json',
         'X-Requested-With': 'XMLHttpRequest',
      },
      };
    }
  }
  return function(dispatch) {
    axios(options)
    .then(response => {
      dispatch({
        type: onSucess,
        payload: response.data
      });
    })
    .catch(error => {
      dispatch({ type: onError, payload: err});
    });
  }
}

static get(apiUri, onSuccess, onError, ...actionArguments) {
    return this.dataLoader(apiUri, onSuccess, onError, undefined, ...actionArguments);
  }

  /*
   * Shorthand POST function
   */
  static post(apiUri, onSuccess, onError, data, ...actionArguments) {
    return this.dataLoader(apiUri, onSuccess, onError, data, ...actionArguments);
  }

}

我想将以下代码转换为进一步的代码：

export function showResultofApartment() {
  return (dispatch) => {
    dispatch({ type: 'APARTMENT_FETCH_START' });
    const token = localStorage.getItem('token');
    return axios.get(`${API_URL}/newoffers/apartment/`)
    .then((response) => {
      console.log('response apart', response.data);
        dispatch({ type: 'APARTMENT_FETCH_SUCCESS', payload: response.data });
    })
    .catch((err) => {
      dispatch({ type: 'APARTMENT_FETCH_FAILURE', payload: err });
    });
  };
}

这样或比这更有效率：

export function showResultofApartment() {
  return(dispatch) => {
    dispatch({ type: APARTMENT_FETCH_START });
    const token = localStorage.getItem('token');
    return Company.get('/apartments', APARTMENT_FETCH_SUCCESS, APARTMENT_FETCH_ERROR);
    // if post then Company.post('/apartment', APARTMENT_POST_SUCCESS, APARTMENT_POST_ERROR, data)
  }
}

这种方式只考虑发布请求（如果数据！==未定义）。我应该如何有效地处理获取和发布？

Answer 1

好吧，你为什么不这样处理：

公司.js

import { merge } from 'lodash';
import axios from 'axios';

function getHeaders() {
  return {
   'Content-Type': 'application/json'
 };
}

export class Company {

static callAPI(endpoint, extendedOptions, onSuccess, onError) {
  const initalHttpData = {
    method: 'GET', // By default it's GET in case you didnt specify anything
    headers: getHeaders(),
    url: `${API_BASE}${endpoint}`
  };

  // merge takes care of replacing or adding the specific key's provided via the extendedOptions
  const options = merge(initalHttpData, extendedOptions);

  // Fire the request for the prepared options.
  let request = axios(options);

  // The request once fired, needs it's success handler and error handler.
  return function(dispatch) {
    request
    .then(response => {
      dispatch({
        type: onSucess,
        payload: response.data
      });
    })
    .catch(error => {
      dispatch({ type: onError, payload: err});
    });
  }
};
}

那么我们就可以使用action来专门把东西传递给这个api util：

GET API 调用：

// GET Action
export function showResultofApartment() {
  return (dispatch) => {
    dispatch({ type: APARTMENT_FETCH_START });
    const token = localStorage.getItem('token');

    // FOR GET API
    return Company.callApi('/apartments', {}, APARTMENT_FETCH_SUCCESS, APARTMENT_FETCH_ERROR);
  }
}

POST API 调用：

// POST Action
export function showResultOfAppartmentPost() {
  return (dispatch) => {
    dispatch({ type: APARTMENT_FETCH_START });
    const token = localStorage.getItem('token');

    // This will merge, essentially replace the method=GET once it gets called.
    const extendedOptions = {
      method: 'POST',
      body: JSON.stringify(data),
      headers: {
         'X-Requested-With': 'XMLHttpRequest',
      }
    }

    // FOR GET API
    return Company.callApi('/apartments', extendedOptions, APARTMENT_FETCH_SUCCESS, APARTMENT_FETCH_ERROR);
}

因此，给出动作，定义它自己的一组 API 主体或请求。