Vue+EleMentUI实现el-table-colum表格select下拉框可编辑

说明：

在进行采购入库的过程中，有必要对表格中的一行进行快速编辑保存，节省时间，提高工作效率！，而不是每次编辑都要弹窗才可编辑
源码：https://gitee.com/charlinchenlin/store-pos

效果图：

1、在data定义supplier数组等元素

data(){return{       
        suppliers:[],   //保存供应商数据    
        showInput: "", //用来判断是否显示哪个单元格
        oldData: {}, //用来存修改前的数据
        currentData: {},  //用来保存新的数据     
      }},

2、为el-table表格单击和双击添加tableDbEdit事件

<el-table :data="dataList"size="mini" v-loading="dataListLoading" @selection-change="selectionChangeHandle"style="width: 100%;" @cell-click="tableDbEdit" @cell-dblclick="tableDbEdit"height="320"
      :header-cell-style="{ background: '#fcfcfc', color: '#606266', height:'36px'}"><el-table-column type="selection" header-align="center"align="center"width="50"></el-table-column>
     
        ------
      
    </el-table>

控制是否显示select下拉框

tableDbEdit(row, column, event){
   this.showInput = column.property + row.inboundId;
   this.oldData[column.property]= row[column.property];},

3、为供应商列添加下拉框

如果showInput的值与当前的inboundId相同，则显示下拉选项，否则显示数据信息

<el-table-column prop="supplierName" header-align="center"align="center"label="供应商名称"width="150" show-overflow-tooltip><template slot-scope="scope"><el-select size="mini" @focus="getSuppliers()" @click="getSuppliers()" @change='blurInput(scope.row, "supplierName", scope.row.supplierName)' v-model="scope.row.supplierName" clearable
            v-if="showInput == `supplierName${scope.row.inboundId}`"placeholder="请选择"><el-option v-for="item in suppliers" :key="item.supplierId" :label="item.supplierName" :value="item.supplierName"></el-option></el-select><span v-else class="active-input">{{scope.row.supplierName}}</span></template></el-table-column>

聚焦或单击时获取供应商数据

async getSuppliers(){
        const res = await this.$http({
          url: `/product/supplier/getSupplies`,
          method: 'get',
          params: this.$http.adornParams()})let data = res.data
        if(data && data.code ===0){
          this.suppliers = data.data
        }},

触发change事件时给当前列赋值，并设置供应商信息

// 当input失去光标后进行的操作
      async blurInput(row, name, value){
        // 判断数据是否有所改变，如果数据有改变则调用修改接口
        if(this.oldData[name]!= value){
          row[name]= value         
        }
        this.showInput =""
        this.currentData = row
        if(name ==='supplierName'){
          this.setSuppliers(row)}},

    setSuppliers(row){for(let index in this.suppliers){let item = this.suppliers[index]if(row.supplierName === item.supplierName){
              row.supplierId = item.supplierId
              return}}},

4、保存当前列，成功后重新加载数据

async saveHandle(row){
        console.log("saveHandle row===", row)
        row.status = row.status ? 1:0
        const res = await this.$http({
          url: `/purchase/purchasesinboundorder/update`,
          method: 'post',
          data: this.$http.adornData(row)});let data = res.data
        if(data && data.code !==0){
          row.status =!row.status;return this.$message.error('修改失败!');}
        this.$message.success('更新成功！');
        this.getDataList();},

5、定义v-focus

directives: {
      // 通过自定义指令实现的表单自动获得光标的操作
      focus: {
        inserted: function(el){if(el.tagName.toLocaleLowerCase()=="input"){
            el.focus()}else{if(el.getElementsByTagName("input")){
              el.getElementsByTagName("input")[0].focus()}}
          el.focus()}},
      focusTextarea: {
        inserted: function(el){if(el.tagName.toLocaleLowerCase()=="textarea"){
            el.focus()}else{if(el.getElementsByTagName("textarea")){
              el.getElementsByTagName("textarea")[0].focus()}}
          el.focus()}}},