3 回答

• 1

  解决这个问题的一种方法是使用RxJS

  我们将构建一个小的Observable流，它将：

  • 输出所有发布数据

  • 不要强迫我们事先知道帖子或页面的总数

  • 不强制在分页的情况下跟踪"where we're at"

  我们将使用的库：

  • Axios（简化HTTP GET，因为它在节点和浏览器环境中都有效）

  • RxJS v6（目前是Alpha版本，但此处的API与RxJS 5相同）

  您的环境和用例会有所不同，对于此示例，我将进入Node环境 .

  /**
   *      This will get all posts from a default WordPress REST API
   *      First we see how many pages there are
   *      Then we make subsequent XHR requests (via Axios)
   *      That paginate through every page of posts
   */
  
  // Importing Axios for simple AJAX request
  const axios = require('axios')
  
  // Importing RxJS @ v6.0.0-alpha.3
  const { Observable, from, range } = require('rxjs')
  const { switchMap, concatMap } = require('rxjs/operators')
  
  const endpoint = 'http://demo.wp-api.org/wp-json/wp/v2/posts'
  
  /**
   *      This sets up the initial request and the Observable stream
   *      In the return from the endpoint, the Axios request headers will have x-wp-totalpages,
   *      which gives us... the total pages of posts ;)
   */
  const posts$ = Rx.Observable.from(axios.get(endpoint))
      /**
       *     We now know the total number of pages,
       *     so we'll switch to a new Observable that is just a range of numbers
       *     We'll start with 1, and end with whatever the total number of pages is
       *     This gives us a stream of 1--n--n--n... (example: 1, 2, 3, 4...)
       */
      .switchMap((
          { headers }, // using ES6 function header destructuring and arrow functions here
      ) => Rx.Observable.range(1, Number(headers['x-wp-totalpages'])))
      /**
       *     We can now paginate through all posts, getting 10/page
       *     concatMap will fire off a request, waits until it completes, and then fire the next one
       *     In each subsequent firing, we ask for the next page of posts
       */
      .concatMap(page =>
          axios.get(endpoint, {
              params: {
                  page,
              },
          }),
      )
      .subscribe(
          // data here is an Array of WordPress Posts, tacking .length shows us how many per page we are getting
          ({ data }) => console.log(data.length),
          err => console.log('Oh no, an error!', err),
      )
  

  资源

  • RunKit example with the code above（唯一的区别是在RunKit示例中导入RxJS v5，因为v6尚不可用，但此示例的API没有区别）

  • RxJS In Depth - Ben Lesh（视频，来自主要维护者的RxJS的良好入门级别）

  • The introduction to Reactive Programming you've been missing（@andrestaltz RxJS简介的最佳文字资源）

  • https://www.learnrxjs.io/

  • Destructuring objects as function parameters in ES6

  • Arrow Functions on MDN（检查基本和高级语法）

  回复于 2024-05-05T13:56:42+08:00
• 0

  您可以使用 wp_remote_retrieve_body($url) 或 wp_remote_post($url) 来获取发布数据而不是其他API使用情况 . wp_remote函数独立于默认分页 .

  回复于 2024-05-05T13:56:42+08:00
• 0

  大型查询可能会损害网站性能，因此per_page的上限为100条记录 . 如果您希望检索超过100条记录，例如构建所有可用类别的客户端列表，您可以发出多个API请求并将结果合并到您的应用程序中 . see this for complet expalin

  回复于 2024-05-05T13:56:42+08:00