如何使用Liquid来对Jekyll的数据项进行分页

时间:2018-07-23 22:54:00

标签: jekyll liquid jekyll-paginator

嗨,我正在尝试访问上一个和下一个数组中的元素。确切地说,我想访问页面的上一个和下一个网址。这是我到目前为止所做的。谢谢!

{% assign page_venue = site.data.venues-array | where: "venueID",   page.venue | first %
//This outputs the current url
{{venue.url}}

这是yml文件的一部分:

venueID: Red-Radish
name: Red Radish
url: redradish
building: 65
neighborhood: University Union

venueID: Poly-Deli
name: Poly Deli
url: polydeli
building: 19
neighborhood: University Union

venueID: Myrons
name: Myron's
url: myrons
previous: MustangStation
building: 19
neighborhood: University Union

所以,假设我是第二个场馆(Poly-Deli),我想看看:
当前网址:polydeli
上一个网址:带红色
下一个网址:myrons
我尝试使用以下命令输出上一个和下一个URL,但它无法正常工作:

<p>{{page.next.url}}</p>
<p>{{venue.next.url}}</p>
<p>{{paginate.next.url}}</p>
<p>{{paginator.next_page}}</p>

有人帮助了我,它确实起作用了,但它输出了整个列表。我只想输出这样的内容,因为这是因为我有30个数组(30个不同的位置):
当前网址:polydeli
上一个网址:带红色
下一个网址:myrons

这是输出整个列表的代码:

{% for venue in site.data.venues-array %}

  {% assign next = forloop.index0 | plus: 1 %}
  {% assign previous = forloop.index0 | minus: 1 %}
    <div>Name: {{ venue.name }}</div>
    <div>Current URL: {{ venue.url }}</div>

    <div>Previous url:{{ site.data.venues-array[previous].url }}</div>
    <div>Next URL is:{{ site.data.venues-array[next].url }}</div>
    <hr>

{% endfor %} 

1 个答案:

答案 0 :(得分:1)

正如我在之前的评论中提到的那样,我找不到合适的插件来分页_data集合。可用的工具很少,但都需要大量的骇客攻击,而且对于如此简单的要求,它们非常肿。

您可以将以下HTML和JS添加到场所页面的内容部分。 (即,在最下面)。

HTML:

---
---
<div class="venue">

</div>

JavaScript:

<script type="text/javascript">

  /**
   * Setting for whether to keep looping or not.
   * If set to true, the first venue will show the URL of the last venue as
   * the previous venue, while the last venue will show the URL of the first
   * venue as the next one.
   *
   * If set to false, the first venue will not include a previous URL, while the last venue * * won't display the next URL.
   */
  var infinite = true

  // Gets all the venues adta and parses it as JSON.
  var venues = '{{ site.data.venues-array | jsonify }}'
  venues = JSON.parse(venues)


  // Inits the html content.
  var html = ''

  // The array index of the current venue.
  var currentVenueIndex = 0

  /**
   * Displays the current venue. Includes the previous and next links.
   *
   */
  var generateHtmlForCurrentVenue = function (venueName) {
    var venueContent = '<p>Current Venue Name: ' + venueName + '</p>' +

    getPreviousLink() + getNextLink()

    html = venueContent
  }

  /**
   * Gets the previous URL link unless we're not infinitely looping and the
   * current Venue is the first item in the array.
   */
  var getPreviousLink = function () {
    link = ''
    if (!infinite&& currentVenueIndex == 0) {
      return link
    }
    previousIndex = 0
    if (currentVenueIndex == 0) {
      previousIndex = (venues.length - 1)
    } else {
      previousIndex = (currentVenueIndex - 1)
    }

    return '<p>Previous: <a href="#" class="previous-venue">' +
      venues[previousIndex].url + '</a></p>'

  }

  /**
   * Gets the next URL link unless we're not infnitely looping and the
   * current Venue is the last item in the array.
   */
  var getNextLink = function () {
    link = ''
    if (!infinite&& currentVenueIndex >= (venues.length -1)) {
      return link
    }
    nextIndex = 0
    if (!(currentVenueIndex >= (venues.length - 1))) {
      nextIndex = (currentVenueIndex + 1)
    }
    return '<p>Next: <a href="#" class="next-venue">' +
      venues[nextIndex].url + '</a></p>'
  }


  /**
   * Shows the Previous Venue.
   */
  var showPreviousVenue = function () {
    if (currentVenueIndex == 0) {
      currentVenueIndex = (venues.length -1)
    } else {
      currentVenueIndex --
    }
    $('.venue').html('')
    generateHtmlForCurrentVenue(venues[currentVenueIndex].name)
    $('.venue').html(html)
  }

  /**
   * Shows the Next Venue.
   */
  var showNextVenue = function () {
    if (currentVenueIndex == (venues.length -1)) {
      currentVenueIndex = 0
    } else {
      currentVenueIndex ++
    }
    $('.venue').html('')
    generateHtmlForCurrentVenue(venues[currentVenueIndex].name)
    $('.venue').html(html)
  }

  /**
   * Previous venue link click event handler.
   */
  $(document.body).on('click', '.previous-venue', function (event) {
    event.preventDefault()
    showPreviousVenue()
  })


  /**
   * Next venue link click event handler.
   */
  $(document.body).on('click', '.next-venue', function (event){
    event.preventDefault()
    showNextVenue()
  })

  generateHtmlForCurrentVenue(venues[currentVenueIndex].name)

  $('.venue').html(html)

</script>

您可以通过切换infinite变量来更改是否继续循环,如代码注释中所述。

请注意:

我的系统(v3.0.2)上安装了较旧版本的Jekyll,因此jsonify的文本值中有单引号时,venues-array.yml过滤器将中断。即 Myron的坏了,我无法逃脱,如下所示: enter image description here

如果您有Jekyll >= 3.2,那么我相信您不会遇到此问题,因为Jekyll将在运行过滤器之前自动使用UTF-8编码。由于客户端的站点需要此版本并且没有Docker容器,因此无法升级我的计算机。如果确实有此问题,请尝试:

1)在yml文件上强制执行UTF-8。要么 2)在过滤器之前清除单引号或 3)不要使用单引号:)

转义对我不起作用。

除此之外,所有功能都可以正常运行,如下所示:

enter image description here