html 在使用多个选项进行过滤时,使用isotope.js定义AND关系

p8ekf7hl  于 12个月前  发布在  其他
关注(0)|答案(1)|浏览(68)

我有两个包含独特的过滤器选项的内容类型区域。这些是:

  1. type
  2. tag
    我试图利用isotope.js,以实现双重过滤布局,但它总是给最后点击过滤器优先级。
    我希望它的运作方式是:
    1.如果只选择了一个tag,则显示具有该tag的结果
    1.如果选择了多个tag,则显示具有任何这些标签的结果(两个标签不需要同时存在于卡上)
    1.如果选择了type,则仅显示该type下的结果
    1.如果选择了一个type和一个tag,则显示所选type上存在tag的帖子的结果
    1.如果选择了一个type和多个tags,则显示属于该类型的具有这些tags之一的帖子。
    1.如果选择了多个type和一个或多个tag,则显示其中tag存在于任一类型上的帖子
    例如,使用我下面的演示,这里有一些用例:
    1.如果我点击“视频演示和图尔斯”,我应该看到两个视频职位(卡1和3)-作品
    1.如果我点击“视频演示和图尔斯”,然后“Ansible”,我应该只看到卡3 -不工作
    1.如果我点击“博客&新闻”,我应该看到3卡(卡2,4,5)-作品
    1.如果我点击“博客和新闻”,然后点击“Ansible”,我应该会看到卡片4和5
    1.如果我点击“博客和新闻”,“Ansible”,然后“自动化”,我应该看到卡2,4和5
    然而,在我当前的演示中,尽管控制台日志似乎在正确的行上,但它并没有按照我的意图执行。
document.addEventListener("DOMContentLoaded", function () {
  var container = document.querySelector(".grid");
  var gridItems = container.querySelectorAll(".grid-item");
  const optionLinks = document.querySelectorAll(".rSidebar__options-li");

  var iso = new Isotope(container, {
    itemSelector: ".resourceCard",
    layoutMode: "fitRows",
    transitionDuration: "0.5s"
  });

  var filters = {};

  function concatValues(obj) {
    var value = [];
    for (var prop in obj) {
      value.push(obj[prop]);
    }
    return value.flat().join(", ");
  }

  function handleFilterClick(event, filters) {
    var listItem = event;
    var filterGroup = listItem
      .closest(".rSidebar__options")
      .getAttribute("data-filter-group");
    var data_filter = listItem.getAttribute("data-filter");

    if (filterGroup === "type") {
      filters[filterGroup] = [data_filter];
    } else {
      if (!filters[filterGroup]) {
        filters[filterGroup] = [];
      }

      if (listItem.classList.contains("selected")) {
        filters[filterGroup].push(data_filter);
      } else {
        filters[filterGroup] = filters[filterGroup].filter(
          (tag) => tag !== data_filter
        );
      }
    }

    // Combine the type filter with the selected tag filters using an AND relationship
    var filterValues = [];

    // Handle type filter
    if (filters["type"]) {
      filterValues.push("." + filters["type"][0]);
    }

    // Handle tags filter if it's defined
    if (filters["tag"]) {
      var selectedType = filters["type"][0];
      filters["tag"].forEach((tag) => {
        filterValues.push("." + selectedType + "." + tag);
      });
    }

    var finalFilter = filterValues.join(", ");
    console.log(finalFilter);

    iso.arrange({
      filter: finalFilter
    });
  }

  optionLinks.forEach(function (optionLink) {
    optionLink.addEventListener("click", function (event) {
      event.preventDefault();
      this.classList.toggle("selected");
      handleFilterClick(this, filters);
    });
  });
});
.post {
  padding: 100px;
}

.rSidebar__box {
  margin-bottom: 30px;
}
.rSidebar__options {
  padding-left: 0;
}
.rSidebar__options-li {
  margin-bottom: 17px;
  display: flex;
  align-items: center;
  cursor: pointer;
  width: fit-content;
}
.rSidebar__options-li.selected .rSidebar__options-square {
  background-color: #185A7D;
}
.rSidebar__options-square {
  height: 20px;
  width: 20px;
  transition: all 0.5s ease;
  border: 2px solid #000000;
}
.rSidebar__options-label {
  margin-left: 10px;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  margin: -14px 0 0 -14px;
}
.grid-item {
  box-sizing: border-box;
  width: calc(45% - 14px);
  margin: 14px 0 18px 14px;
  border: 2px solid black;
  padding: 20px;
}
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<script src="https://unpkg.com/isotope-layout@3/dist/isotope.pkgd.min.js"></script>

<div class="post">
  <div class="container">
    <div class="row justify-content-between">

      <!-- SIDEBAR -->
      <div class="col-3">
        <div class="rSidebar">

          <!-- tags -->
          <div class="rSidebar__box">
            <span class="rSidebar__label d-block fw-bold">Filter by tag</span>
            <ul class="rSidebar__options button-group" data-filter-group="tag">
              <li class="rSidebar__options-li" data-filter="ansible">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="ansible">Ansible</span>
              </li>
                <li class="rSidebar__options-li" data-filter="automation">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="automation">Automation</span>
              </li>
            </ul>
          </div>

          <!--  type -->
          <div class="rSidebar__box">
            <span class="rSidebar__label d-block fw-bold">Filter by type</span>
            <ul class="rSidebar__options button-group" data-filter-group="type">
              <li class="rSidebar__options-li" data-filter="blogs-and-news">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="blogs-and-news">Blog & News</span>
              </li>
              <li class="rSidebar__options-li" data-filter="video-demos-tour">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="video-demos-tours">Video Demos & Tours</span>
              </li>
            </ul>
          </div>
          <!-- end -->
        </div>
      </div>
      <!-- END -->

      <!-- GRID -->
      <div class="col-7">
        <div class="grid">
          <article class="resourceCard grid-item video-demos-tour automation"><span class="resourceCard__body-title">Card 1<br>Type: Video Demo & Tour<br>Tag: Automation</span></article>
          <article class="resourceCard grid-item blogs-and-news"><span class="resourceCard__body-title">Card 2<br>Type: Blog & News<br>Tag: Automation</span></article>
          <article class="resourceCard grid-item video-demos-tour automation ansible"><span class="resourceCard__body-title">Card 3<br>Type: Video Demo & Tour<br>Tags: Automation, Ansible</span></article>
          <article class="resourceCard grid-item blogs-and-news ansible"><span class="resourceCard__body-title">Card 4<br>Type: Blog & News<br>Tag: Ansible</span></article>
          <article class="resourceCard grid-item blogs-and-news ansible"><span class="resourceCard__body-title">Card 5<br>Type: Blog & News<br>Tags: Ansible, Automations</span></article>
        </div>
      </div>
      <!-- END -->

    </div>
  </div>
</div>
hgqdbh6s

hgqdbh6s1#

如果我理解正确的话,你想用OR组合同一组的合并过滤器,用AND组合组之间的过滤器:

{a,b} x {1,2} -> a1|a2|b1|b2

在选择器中(如Isotope所使用的),这将是:

.a.1, .a.2, .b.1, .b.2

你可以通过查看每个组,将每个元素与之前构建的选择器组合来构建它:

function buildSelectors(filterObject){
  return Object.values(filterObject)  // extract filter arrays
    .reduce(
      (selectors, groupValues) => 
        groupValues.length === 0 ? selectors :  // skip empty groups
        groupValues.flatMap(v => selectors.map(s => `${s}.${v}`)) // combine group elements with existing selectors into new list
      , [''])
    .join(', ')
}

如果你更喜欢常规循环,这是这样的:

function buildSelectors(filterObject){
  let selectors = ['']
  for (const group of Object.values(filterObject)){
    if (group.length === 0) {
      continue
    }
    const mergedSelectors = []
    for (const value of group) {
      for (const selector of selectors) {
        mergedSelectors.push(`${selector}.${value}`)
      }
    }
    selectors = mergedSelectors
  }
  return selectors.join(',')
}

一些一般提示和建议:

  • 卡2和卡5错过了automation类,不确定这是否是故意的
  • 使用所有现有组的空数组示例化filter对象,这样就可以避免您以后弄清楚组属性是否已经存在
  • 将DOM操作与过滤数据操作分离,使代码更易于维护
  • 考虑为Filter创建一个类,以便进一步按关注点分割代码

看看更新的片段:

class Filter{
  groups = {
    tag: [],
    type: [],
  }
  
  updateGroup(group, value, isSelected) {
    const isActiveValue = this.groups[group].includes(value)
    if (isSelected && !isActiveValue){
       this.groups[group].push(value)
    }
    if (!isSelected && isActiveValue){
       this.groups[group] = this.groups[group].filter(v => v !== value)
    }
  }

  buildSelector(){
    return Object.values(this.groups).reduce(
      (selectors, groupValues) => 
        groupValues.length === 0 ? selectors :
        groupValues.flatMap(v => selectors.map(s => `${s}.${v}`))
      , [''])
    .join(', ')
  }
  
  updateSelector(group, value, isSelected){
    this.updateGroup(group, value, isSelected)
    return this.buildSelector()
  }
}

document.addEventListener("DOMContentLoaded", function () {

  const iso = new Isotope('.grid', {
    itemSelector: ".resourceCard",
    layoutMode: "fitRows",
    transitionDuration: "0.5s"
  });

  const activeFilter = new Filter()
  
  function onOptionLinkClick(event){
    event.preventDefault();
    
    this.classList.toggle("selected");
    const isSelected = this.classList.contains("selected")
    
    const group = this
      .closest(".rSidebar__options")
      .getAttribute("data-filter-group");
    const value = this.getAttribute("data-filter");

    const filter = activeFilter.updateSelector(group, value, isSelected)
    iso.arrange({filter})
    
    console.clear()
    console.log('Current filter:', filter)
  }

  const optionLinks = document.querySelectorAll(".rSidebar__options-li");
  optionLinks.forEach(optionLink => optionLink.addEventListener("click", onOptionLinkClick));
})
.post {
  padding: 10px;
}

.rSidebar__box {
  margin-bottom: 30px;
}
.rSidebar__options {
  padding-left: 0;
}
.rSidebar__options-li {
  margin-bottom: 17px;
  display: flex;
  align-items: center;
  cursor: pointer;
  width: fit-content;
}
.rSidebar__options-li.selected .rSidebar__options-square {
  background-color: #185A7D;
}
.rSidebar__options-square {
  height: 20px;
  width: 20px;
  transition: all 0.5s ease;
  border: 2px solid #000000;
}
.rSidebar__options-label {
  margin-left: 10px;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  margin: -14px 0 0 -14px;
}
.grid-item {
  box-sizing: border-box;
  width: calc(45% - 14px);
  margin: 14px 0 18px 14px;
  border: 2px solid black;
  padding: 20px;
}
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<script src="https://unpkg.com/isotope-layout@3/dist/isotope.pkgd.min.js"></script>

<div class="post">
  <div class="container">
    <div class="row justify-content-between">

      <!-- SIDEBAR -->
      <div class="col-3">
        <div class="rSidebar">
          
          <!-- tags -->
          <div class="rSidebar__box">
            <span class="rSidebar__label d-block fw-bold">Filter by tag</span>
            <ul class="rSidebar__options button-group" data-filter-group="tag">
              <li class="rSidebar__options-li" data-filter="ansible">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="ansible">Ansible</span>
              </li>
                <li class="rSidebar__options-li" data-filter="automation">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="automation">Automation</span>
              </li>
            </ul>
          </div>

          <!--  type -->
          <div class="rSidebar__box">
            <span class="rSidebar__label d-block fw-bold">Filter by type</span>
            <ul class="rSidebar__options button-group" data-filter-group="type">
              <li class="rSidebar__options-li" data-filter="blogs-and-news">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="blogs-and-news">Blog & News</span>
              </li>
              <li class="rSidebar__options-li" data-filter="video-demos-tour">
                <span class="rSidebar__options-square"></span>
                <span class="rSidebar__options-label d-block" data-filter="video-demos-tours">Video Demos & Tours</span>
              </li>
            </ul>
          </div>
          <!-- end -->
        </div>
      </div>
      <!-- END -->

      <!-- GRID -->
      <div class="col-7">
        <div class="grid">
          <article class="resourceCard grid-item video-demos-tour automation"><span class="resourceCard__body-title">Card 1<br>Type: Video<br>Tag: Automation</span></article>
          <article class="resourceCard grid-item blogs-and-news automation"><span class="resourceCard__body-title">Card 2<br>Type: Blog<br>Tag: Automation</span></article>
          <article class="resourceCard grid-item video-demos-tour automation ansible"><span class="resourceCard__body-title">Card 3<br>Type: Video<br>Tags: Automation, Ansible</span></article>
          <article class="resourceCard grid-item blogs-and-news ansible"><span class="resourceCard__body-title">Card 4<br>Type: Blog<br>Tag: Ansible</span></article>
          <article class="resourceCard grid-item blogs-and-news ansible automation"><span class="resourceCard__body-title">Card 5<br>Type: Blog<br>Tags: Ansible, Automation</span></article>
          <article class="resourceCard grid-item video-demos-tour ansible"><span class="resourceCard__body-title">Card 6<br>Type: Video <br>Tags: Ansible</span></article>
        </div>
      </div>
      <!-- END -->

    </div>
  </div>
</div>

这有意义吗,有帮助吗?

相关问题