vue使用el-table篩選tree樹形結(jié)構(gòu)的數(shù)據(jù)問題

更新時(shí)間：2024年07月25日 10:02:40 作者：蜂巢糖FCT

這篇文章主要介紹了vue使用el-table篩選tree樹形結(jié)構(gòu)的數(shù)據(jù)問題,具有很好的參考價(jià)值,希望對大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教

實(shí)現(xiàn)難點(diǎn)

1.對于普通列數(shù)據(jù)el-table表格可做到多條件篩選，但是對于帶tree樹形結(jié)構(gòu)類型的數(shù)據(jù)只能篩選到最上層節(jié)點(diǎn)，子節(jié)點(diǎn)不會篩選

2.考慮到缺陷，因此查看文檔只能通過文檔提供的filter-change事件手動篩選數(shù)據(jù)。

思路

1.通過filter-change事件使用filterObj對象保存點(diǎn)擊的篩選狀態(tài)

2.先將當(dāng)前樹形數(shù)據(jù)轉(zhuǎn)變成普通列數(shù)據(jù)，再進(jìn)行手動過濾，過濾后以普通列數(shù)據(jù)展示

3.當(dāng)無篩選條件時(shí)再以樹形結(jié)構(gòu)展示

圖例

實(shí)現(xiàn)步驟

1.數(shù)據(jù)初始化

data:{
    return{
         targetNode:{},//總數(shù)據(jù)，保持tree數(shù)據(jù)類型
         tableData:[],//展示在table上的數(shù)據(jù)
         filterObj:{isEnable:[],filterTypeAttr:[],filterTypeCondition:[]},//過濾條件,由于表        格組件filterchange方法只會提示當(dāng)前的篩選項(xiàng)，
            //所以使用filterObj來保存所有篩選過的選項(xiàng)   
    }
}

2.表格

<el-table
 :data="tableData"
 row-key="id"
 border
 default-expand-all
 v-loading="loading"
 @filter-change="filterChange"
 ref="filterTable"
 :tree-props="{children: 'children', hasChildren: 'hasChildren'}">
 <el-table-column prop="index"  label="順序"  width="180">
    <template slot-scope="scope">{{(scope.$index + 1)}}</template>
 </el-table-column>
 <el-table-column prop="filterName" label="篩選項(xiàng)" width="180">
    <template slot-scope="scope"><span :class="        
      [scope.row.filterTypeCondition==1?'filter-name':'']">{{ scope.row.filterName }} 
     </span><i v-if="scope.row.filterTypeAttr!==2" class="el-icon-plus" style="color: 
     #03a9f4;font-size: 12px;margin-left: 10px;cursor: pointer;" 
     @click="addCondition(scope.row)"></i>
   </template>
</el-table-column>
<el-table-column
  prop="filterTypeAttr" 
  column-key="filterTypeAttr"
  :filters="[{ text: '自定義', value: '1' }, { text: '機(jī)構(gòu)名稱', value: '2'},{ text: '無', 
  value: ''}]"
  label="篩選類型屬性">
    <template slot-scope="scope">{{ scope.row.filterTypeAttr==1?'自定義':      
      scope.row.filterTypeAttr==2?'機(jī)構(gòu)名稱':''}}</template>
    <template slot="header" slot-scope="scope">
       <!-- {{filterObj.filterTypeAttr.length==0?'篩選類型屬 
    性':filterObj.filterTypeCondition.length==1 && 
     filterObj.filterTypeCondition[0]==1?'1-篩選類型'
                        :filterObj.filterTypeCondition.length==1 && 
       filterObj.filterTypeCondition[0]==2?'2-篩選條件':'篩選類型屬性-全部'}} -->
                        {{filterObj.filterTypeAttr.length==3?'篩選類型屬性-全部':'篩選類型 
      屬性'+(filterObj.filterTypeAttr.includes(1)?'-自定義':'')+ 
      (filterObj.filterTypeAttr.includes(2)?'-機(jī)構(gòu)名稱':'')+ 
       (filterObj.filterTypeAttr.includes(0)?'-無':'')}}
     </template>
</el-table-column>
<el-table-column 
    prop="filterTypeCondition"
    column-key="filterTypeCondition"
    :filters="[{ text: '1-篩選類型', value: '1' }, { text: '2-篩選條件', value: '2'}]"
    label="標(biāo)識">
    <template slot-scope="scope">{{ scope.row.filterTypeCondition==1?'1-篩選類型':'2-篩選條件'}}</template>
     <template slot="header" slot-scope="scope">
       {{filterObj.filterTypeCondition.length==0?'標(biāo)識':filterObj.filterTypeCondition.length==1 && filterObj.filterTypeCondition[0]==1?'標(biāo)識-1-篩選類型':filterObj.filterTypeCondition.length==1 && filterObj.filterTypeCondition[0]==2?'標(biāo)識-2-篩選條件':'標(biāo)識-全部'}}
    </template>
</el-table-column>
<el-table-column prop="defaultSelected" label="是否屬于默認(rèn)展示項(xiàng)">
 <template slot-scope="scope">
   {{scope.row.defaultSelected==1?'是':scope.row.defaultSelected==0?'否':''}}
 </template>
</el-table-column>
<el-table-column prop="action" label="操作" width="250">
  <template slot-scope="scope">
    <span v-if="scope.row.filterTypeCondition==2" class="scope-span" :class=" 
   [scope.row.rule && scope.row.rule!=''?'filter-span':'']" 
    @click="showRegular(scope.row)">規(guī)則式</span>
    <span class="scope-span" @click="updateFilter(scope.row)">編輯</span>
        <el-popconfirm
           title="是否確定刪除？"
           @confirm="delFilter(scope.row)"
          >
             <span class="scope-span" slot="reference" >刪除</span>
       </el-popconfirm>
   </template>
</el-table-column>
<el-table-column 
    prop="isEnable"
    label="狀態(tài)" 
    column-key="isEnable"
    :filters="[{ text: '啟用', value: '1' }, { text: '禁用', value: '0' }]"
                    >
   <template slot-scope="scope">{{ scope.row.isEnable==1?'啟用':'禁用'}}</template>
   <template slot="header" slot-scope="scope">
       {{filterObj.isEnable.length==0?'狀態(tài)'
        :filterObj.isEnable.length==1 && filterObj.isEnable[0]==1?'狀態(tài)-啟用'
        :filterObj.isEnable.length==1 && filterObj.isEnable[0]==0?'狀態(tài)-禁用':'狀態(tài)-全部'}}
   </template>
</el-table-column>
</el-table>

要點(diǎn)：

default-expand-all：默認(rèn)展開全部子節(jié)點(diǎn)
filterChange：獲取點(diǎn)擊的篩選條件狀態(tài)，對應(yīng)列表頭上設(shè)置:filters屬性的列

<template slot="header" slot-scope="scope">設(shè)置篩選后用來替換表頭的label內(nèi)容

3.filterChange函數(shù)

filterChange(filters){//觸發(fā)過濾事件時(shí)過濾數(shù)據(jù)
        console.log('filters',filters);
        if(filters['isEnable']){
            this.filterObj['isEnable'] = filters['isEnable'].map(Number);
        }
        if(filters['filterTypeAttr']){
            this.filterObj['filterTypeAttr'] = filters['filterTypeAttr'].map(Number);
        }
        if(filters['filterTypeCondition']){
            this.filterObj['filterTypeCondition'] = filters['filterTypeCondition'].map(Number);
        }
 
        if(this.filterObj['isEnable'].length==0 && this.filterObj['filterTypeAttr'].length==0 && this.filterObj['filterTypeCondition'].length==0){
            this.tableData = this.targetNode.filterList;
        }else{
            let dataList = [];
            this.targetNode.filterList.forEach(item=>{//層級數(shù)據(jù)轉(zhuǎn)變成普通列數(shù)據(jù)
                let obj = {
                    filterName:item.filterName,
                    filterTypeAttr:item.filterTypeAttr,
                    sort:item.sort,
                    isEnable:item.isEnable,
                    columnId:item.columnId,
                    id:item.id,
                    filterTypeCondition:1,
                    index:item.index
                }
                dataList.push(obj);
                if(item.children){
                    dataList = dataList.concat(this.getLineData(item.children))
                }
               
            }) 
            console.log('線性數(shù)據(jù)',dataList);
            if(this.filterObj['isEnable'].length>0){//狀態(tài)
                dataList = dataList.filter(item=>{
                    return this.filterObj['isEnable'].includes(item.isEnable)
                }) 
            }
            if(this.filterObj['filterTypeCondition'].length>0){//標(biāo)識
                dataList = dataList.filter(item=>{
                    return this.filterObj['filterTypeCondition'].includes(item.filterTypeCondition)
                }) 
            }
            if(this.filterObj['filterTypeAttr'].length>0){//屬性
                console.log('11',this.filterObj['filterTypeAttr']);
                dataList = dataList.filter(item=>{
                    return this.filterObj['filterTypeAttr'].includes(item.filterTypeAttr?item.filterTypeAttr:0)
                }) 
            }
           
            console.log('過濾數(shù)據(jù)',dataList);
            this.tableData = dataList;
        }
        
      },
      getLineData(data){//層級數(shù)據(jù)變成行數(shù)據(jù)
        let list = [];
        data.forEach(item=>{
            let obj = {};
            if(item.filterTypeCondition==1){//篩選類型
                obj = {
                    filterName:item.filterName,
                    filterTypeAttr:item.filterTypeAttr,
                    sort:item.sort,
                    isEnable:item.isEnable,
                    parentId:item.parentId,
                    id:item.id,
                    filterTypeCondition:1,
                    index:item.index
                }
            }else{
                obj = {
                    filterName:item.filterName,
                    sort:item.sort,
                    isEnable:item.isEnable,
                    parentId:item.parentId,
                    id:item.id,
                    defaultSelected:item.defaultSelected,
                    filterTypeCondition:2,
                    index:item.index
                }
            }
            list.push(obj);
            if(item.children){
                list = list.concat(this.getLineData(item.children))
            }
        })
        return list;
      },

步驟

1.fiters參數(shù)為當(dāng)前點(diǎn)擊的篩選項(xiàng)，數(shù)據(jù)結(jié)構(gòu)如下：

2.使用filterObj保存當(dāng)前篩選狀態(tài)，篩選重置時(shí)為[]空數(shù)組
3.保存后判斷filterObj各項(xiàng)是否都是空數(shù)組，是則直接賦值
4.否則將樹形結(jié)構(gòu)轉(zhuǎn)換成普通列數(shù)據(jù)，注意考慮淺克隆的問題，getLineData函數(shù)作用是將子節(jié)點(diǎn)children也插入到普通列中
5.數(shù)據(jù)轉(zhuǎn)換成普通列數(shù)據(jù)后進(jìn)行過濾