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这篇文章给大家分享的是有关基于vue-draggable如何实现三级拖动排序效果的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
vue-draggable
之前项目中需要用到拖动排序,就去网上找资料,本来最开始是想用jquery-ui里的拖动的,后面发现不符合我的预期也不知道能不能跟vue.js兼容,后面我试过了,单个的可以但是层级太多就不一样了。
废话少说直接上代码
先看数据结构,和页面的呈现,等会再来上代码。
这就是三层结构渲染出来的图。那个海锚一样的东西是可以点击的,点击后会出现当前类型所带的产品。等会会说的
我们现在来看下我实现后的拖动效果,如下
所有父类型里面的产品拖动如下
控制台的打印
好了,放了那么多图,数据结构也发了。接下来我们来上代码和思路。
先上html的代码,这里我的页面是jsp,但是不影响html兼容,项目中途接手,很古老的jsp我也没办法
<%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %> <c:set var="ctx" value="${pageContext.request.contextPath}"/> <link rel="stylesheet" href="${ctx}/res/ifw/plugins/datatables/dataTables.bootstrap.css" rel="external nofollow" /> <style> [v-cloak] { display: none; } .flip-list-move { transition: transform 0.5s; } .handle { float: right; padding-top: 2px; padding-bottom: 8px; } .no-move { transition: transform 0s; } .ghost { opacity: 0.5; background: #c8ebfb; } .list-group { min-height: 20px; } .list-group-item { cursor: move; } .list-group-item i { cursor: pointer; } </style> <div id="vueSort" class="box box-darkness"> <div class="box-header with-border"> <h4 class="box-title">排序</h4> <div class="box-tools pull-right"> <button type="button" class="btn btn-box-tool" data-widget="collapse"><i class="fa fa-minus"></i> </button> </div> </div> <div class="box-body" > <div class="col-md-3"> <ul id="main-nav1" class="nav nav-tabs nav-stacked"> <draggable class="list-group" tag="ul" v-model="listProductType":move="getdata" @update="datadragEnd"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="(element,index) in listProductType" :key="element.id"> <a :href="'#'+forId(element.uuid)" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-header collapsed" data-toggle="collapse"><i v-show="element.productList.length>0" aria-hidden="true" :class="{'fa fa-anchor':isActive,'glyphicon glyphicon-pushpin':!isActive}" @click="submenu"></i></a> {{element.name}} <i class="fa fa-align-justify handle" v-show="element.productTypes.length>0" @click="showLeve2(index)"></i> <template v-if="element.productList.length>0"> <ur :id="forId(element.uuid)" class="nav nav-list collapse secondmenu"> <draggable class="list-group" tag="ul":move="getdata" v-model="element.productList" @update="datadragEnds"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="e in element.productList" :key="e.id"> <a> {{e.name}}</a> </li> </transition-group> </draggable> </ur> </template> </li> </transition-group> </draggable> </ul> </div> <div class="col-md-3" v-show="one.productTypes.length>0&&showOne"> <span><h4 >--->>>{{one.name}}</h4></span> <ul id="main-nav2" class="nav nav-tabs nav-stacked"> <draggable class="list-group" tag="ul" v-model="one.productTypes" :move="getdata"@update="datadragEnd"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="(element,index) in one.productTypes" :key="element.id"> <a :href="'#'+forId(element.uuid)" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-header collapsed" data-toggle="collapse"><i v-show="element.productList.length>0" aria-hidden="true" :class="{'fa fa-anchor':isActive,'glyphicon glyphicon-pushpin':!isActive}" @click="submenu"></i></a> {{element.name}} <i class="fa fa-align-justify handle" v-show="element.productTypes.length>0" @click="showLeve3(index)"></i> <template v-if="element.productList.length>0"> <ur :id="forId(element.uuid)" class="nav nav-list collapse secondmenu"> <draggable class="list-group" tag="ul":move="getdata" v-model="element.productList" @update="datadragEnds"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="e in element.productList" :key="e.id"> <a> {{e.name}}</a> </li> </transition-group> </draggable> </ur> </template> </li> </transition-group> </draggable> </ul> </div> <div class="col-md-3" v-show="two.productTypes.length>0&&showTwo"> <span><h4 >--->>>{{two.name}}</h4></span> <ul id="main-nav3" class="nav nav-tabs nav-stacked"> <draggable class="list-group" tag="ul" v-model="two.productTypes":move="getdata" @update="datadragEnd"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="(element,index) in two.productTypes" :key="element.id"> <a :href="'#'+forId(element.uuid)" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="nav-header collapsed" data-toggle="collapse"><i v-show="element.productList.length>0" aria-hidden="true" :class="{'fa fa-anchor':isActive,'glyphicon glyphicon-pushpin':!isActive}" @click="submenu"></i></a> {{element.name}} <template v-if="element.productList.length>0"> <ur :id="forId(element.uuid)" class="nav nav-list collapse secondmenu"> <draggable class="list-group":move="getdata" tag="ul" v-model="element.productList" @update="datadragEnds"> <transition-group type="transition" :name="'flip-list'"> <li class="list-group-item" v-for="e in element.productList" :key="e.id"> <a> {{e.name}}</a> </li> </transition-group> </draggable> </ur> </template> </li> </transition-group> </draggable> </ul> </div> </div> <div class="box-footer"> <button type="button" class="btn btn-darkness pull-right" id="doSearch" @click="save">保存 </button> <button type="button" class="btn btn-default pull-right" @click="reset" id="resetSearch">重置</button> </div> </div> <script type="text/javascript" src="${ctx}/res/js/vue/vue.js"></script> <!-- CDNJS :: Sortable (https://cdnjs.com/) --> <script src="${ctx}/res/js/vue/Sortable.min.js"></script> <!-- CDNJS :: Vue.Draggable (https://cdnjs.com/) --> <script src="${ctx}/res/js/vue/vuedraggable.umd.min.js"></script> <script type="text/javascript" src="${ctx}/res/js/sort/combinationSort.js"></script>
接下来是js。
Vue.component('vue-draggable', vuedraggable) var vm = new Vue({ el: '#vueSort', data: { isActive: true, queryObject: {}, listProductType: [], showSon: false, index: 0, one: {productTypes: []}, two: {productTypes: []}, showOne: false, showTwo: false }, methods: { init: function () { var _this = this; $.ajax({ url: '../../mt/combinationSort/sortingData', data: null, type: 'POST', contentType: "application/json", dataType: 'json', success: function (data) { if (data.success = true) { if (data.dataObject.length == 0) { Util.alert('通知', '异常数据', 'info'); return; } _this.listProductType = data.dataObject; } console.log(data) } }) }, reset: function () { var _this = this; _this.listProductType = _this.listProductType.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; for (var i in _this.listProductType) { //排序产品类型 _this.listProductType[i].productTypes = _this.listProductType[i].productTypes.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; //排序产品 _this.listProductType[i].productList = _this.listProductType[i].productList.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; for (var a in _this.listProductType[i].productTypes) { _this.listProductType[i].productTypes[a].productTypes = _this.listProductType[i].productTypes[a].productTypes.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; _this.listProductType[i].productTypes[a].productList = _this.listProductType[i].productTypes[a].productList.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; for (var c in _this.listProductType[i].productTypes[a].productTypes) { _this.listProductType[i].productTypes[a].productTypes[c].productList = _this.listProductType[i].productTypes[a].productTypes[c].productList.sort((one, two) => { return one.displaySeq - two.displaySeq; }) ; } } } }, datadragEnd: function (evt) { console.log('拖动前的索引:' + evt.oldIndex); console.log('拖动后的索引:' + evt.newIndex); var obj = evt.item; obj.style.backgroundColor = '#fff'; }, submenu: function () { var _this = this; if (_this.isActive) _this.isActive = false; else _this.isActive = true; if (_this.showSon) _this.showSon = false; else _this.showSon = true; }, datadragEnds: function (evt) { console.log('拖动前的索引:' + evt.oldIndex); console.log('拖动后的索引:' + evt.newIndex); var obj = evt.item; obj.style.backgroundColor = '#fff'; }, forId: function (index) { return "uuid_" + index }, showLeve2: function (index) { var _this = this; _this.index = index; // if (_this.one.productTypes.length > 0) _this.one.productTypes = []; // else _this.one = _this.listProductType[index]; console.log(_this.one) if (_this.showOne) { _this.showOne = false; _this.showTwo = false; } else _this.showOne = true; }, showLeve3: function (index) { var _this = this; // if (_this.two.productTypes.length > 0) _this.two.productTypes = []; // else _this.two = _this.listProductType[_this.index].productTypes[index]; console.log(_this.two.productTypes) if (_this.showTwo) _this.showTwo = false; else _this.showTwo = true; }, getdata: function (event) { console.log("下来了"); var obj = event.dragged; obj.style.backgroundColor = '#11cc17'; }, save: function () { var _this = this; Util.confirm('提示', '您确定要保存排序吗?', function (isOk) { if (isOk) { console.log(_this.listProductType); $.ajax({ type: "post", url: "../../mt/combinationSort/saveSortingData", data: {list: JSON.stringify(_this.listProductType)}, success: function (json) { console.log(json); } }); Util.alert("提示", '保存成功', 'info'); } }, 'info'); } }, created: function () { var _this = this; _this.init(); // _this.heartbeat(); } });
最重要的是这几行代码
然后是使用vue把vuedraggable模块引入,上面图最下面的js是我刚刚发过的代码文件。
Vue.component('vue-draggable', vuedraggable)
这句话显得尤为重要。注册成vue的组件,虽然它本身就是vue的一个组件了。
当然最后我们会进行排序后的顺序的保存。这里就不得不说vue的双向绑定了,你对象只要在页面改变位置,在内存地址里的位置顺序也会被改变的,所有我们只需要再次将整个对象回传就行。后台去解析保存,当然这种方式我觉得会很繁琐。比如:我贴个获取数据的代码
/** * 获取排序数据 * * @param merchantId * @return */ public List<SortProductTypeVo> treeSorting(Long merchantId) { //获取所有的连接项 List<ProductTypeRef> typeRefList = productTypeRefService.findAll(); //获取所有的产品 Map<Long, ProductVo> productList = productService.sortFindProduct(merchantId).stream().collect( Collectors.toMap(w -> w.getId(), w -> w)); //最上级父级 List<SortProductTypeVo> parentList = byParentProduct(merchantId, 0); //平均未分类 List<SortProductTypeVo> typeList = byParentProduct(merchantId, 1); // //获取产品类型和产品关联 Map<Long, List<ProductTypeRef>> parentIdChildrenMap = typeRefList.stream().filter(productTypeRef -> productTypeRef.getProductTypeId() != null).collect(Collectors.groupingBy(ProductTypeRef::getProductTypeId)); parentList.forEach(p -> { //筛选第二级菜单 List<SortProductTypeVo> districtsOne = typeList.stream().filter(sortProductTypeVo -> sortProductTypeVo.getParentTypeId().equals(p.getId())).collect(Collectors.toList()); districtsOne.forEach(a -> { //第三层菜单 List<SortProductTypeVo> districtsTwo = typeList.stream().filter(productType -> productType.getParentTypeId().equals(a.getId())).collect(Collectors.toList()); districtsTwo.stream().forEach(d -> { //获取产品和产品类型之间的连接关系 List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(d.getId(), new ArrayList<>()); //排序产品关联就相当于产品排序 l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); //根据排序产品关联去找到产品 d.setProductList(l.stream().map(e -> { ProductVo products = productList.get(e.getProductId()); if (null != products) products.setDisplaySeq(e.getDisplaySeq()); return products; }).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList()));//数组中过滤空的产品 // d.setProductTypeRefs(parentIdChildrenMap.getOrDefault(d.getId(), new ArrayList<>())); }); List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(a.getId(), new ArrayList<>()); l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); a.setProductList(l.stream().map(c -> { ProductVo products = productList.get(c.getProductId()); if (null != products) products.setDisplaySeq(c.getDisplaySeq()); return products; }).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList())); districtsTwo.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); a.setProductTypes(districtsTwo); // a.setProductTypeRefs(parentIdChildrenMap.getOrDefault(a.getId(), new ArrayList<>())); }); List<ProductTypeRef> l = parentIdChildrenMap.getOrDefault(p.getId(), new ArrayList<>()); l.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); p.setProductList(l.stream().map(a -> { ProductVo products = productList.get(a.getProductId()); if (null != products) products.setDisplaySeq(a.getDisplaySeq()); return products; }).collect(Collectors.toList()).stream().filter(s -> s != null).collect(Collectors.toList())); // p.setProductTypeRefs(parentIdChildrenMap.getOrDefault(p.getId(), new ArrayList<>())); districtsOne.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); p.setProductTypes(districtsOne); }); parentList.sort((q, b) -> Integer.compare(q.getDisplaySeq(), b.getDisplaySeq())); return parentList; }
jdk8语法,可能还有需要改进的地方。反正目前来说,功能是实现了。
其实本来想代码一点点讲解的,奈何实在是有事。
关于怎么让3级菜单组件相互拖动,你只需要在父级相互拖动这里就能找到答案,
加上这个属性就行,理论上。我没试过,因为我懒,hhhh
Vue是一套用于构建用户界面的渐进式JavaScript框架,Vue与其它大型框架的区别是,使用Vue可以自底向上逐层应用,其核心库只关注视图层,方便与第三方库和项目整合,且使用Vue可以采用单文件组件和Vue生态系统支持的库开发复杂的单页应用。
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