How to use VUE to extend ElTableColumn in element-ui

This time I will show you how to use VUE to extend ElTableColumn in element-ui, and what are the precautions for using VUE to extend ElTableColumn in element-ui. The following is a practical case, let's take a look. .

The company has a new requirement. Click on the head of ElTableColumn to search. My colleagues have already made this function, but it is a bit inconvenient to use. I plan to encapsulate it into a component and learn about it.

ElTableColumn originally looked like this:

What it wants to do is like this:

I will put the code directly, it is too much to explain one after another.

Structure of the code:

Components

<!-- ElTableColumnPro.vue -->
<template>
   <el-table-column v-if="visible" :formatter="formatter" :align=&#39;align&#39; :prop="prop" :header-align="headerAlign" :label="label" :width="width" :render-header="renderHeader" >
     <template slot-scope="scope">
      <slot :row="scope.row" :$index="scope.$index" >
       <span>{{fomatMethod(scope.row[prop])}}</span>
      </slot>
     </template>
   </el-table-column>
</template>
<script>
import moment from "moment";
export default {
 name: "el-table-column-pro",
 props: {
  prop: {
   type: String
  },
  label: {
   type: String
  },
  width: {
   type: Number
  },
  renderType: {
   type: String,
   validator: value => ["date", "input", "select"].includes(value)
  },
  placeholder: {
   type: String
  },
  rederWidth: {
   type: String,
   default: "230px"
  },
  param: {
   type: String,
   default: ""
  },
  startDate: {
   type: String
  },
  endDate: {
   type: String
  },
  selectList: {
   type: Array
  },
  isClear: {
   type: Boolean,
   default:true
  },
  visible: {
   type: Boolean,
   default: true
  },
  filterIcon: {
   type: String,
   default: "el-icon-search"
  },
  callback: {
   type: Function
  },
  formatter: {
   type: Function,
   default:(row, column, cellValue)=>cellValue
  },
  align:{
   type:String 
  },
  headerAlign:{
   type:String
  }
 },
 data() {
  return {
   formatD:this.filterIcon
  };
 },
 
 methods: {
  fomatMethod(value){
   return this.formatter('','',value)
  },
  
  renderHeader(createElement, { column, $index }) {
   switch (this.renderType) {
    case "date":
     return this.renderDate(createElement, { column, $index });
    case "input":
     return this.rederInput(createElement, { column, $index });
     
    case "select":
     return this.rederSelect(createElement, { column, $index });
    
    default:
     return column.label;
   }
  },
  rederInput(createElement, { column, $index }) {
   return createElement(
    "p",
    {
     class: "filters",
     style: {
      color: column.color
     }
    },
    [
     createElement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: "200",
        trigger: "click"
       }
      },
      [
       createElement("el-input", {
        props: {
         placeholder: this.placeholder,
         value: this.param
        },
        nativeOn: {
         keyup: event => {
          if (event.keyCode === 13) {
           this.$emit("update:param", event.target.value);
           this.callback && this.callback();
          }
         }
        },
        on: {
         blur: event => {
          this.$emit("update:param", event.target.value);
          this.callback && this.callback();
         }
        }
       }),
       createElement(
        "span",
        {
         slot: "reference"
        },
        [
         column.label,
         createElement("i", {
          class: this.filterIcon,
          style: {
           marginLeft: "4px"
          }
         })
        ]
       )
      ]
     )
    ]
   );
  },
  rederSelect(createElement, { column, $index }) {
   return createElement(
    "p",
    {
     class: "filters",
     style: {
      color: column.color
     }
    },
    [
     createElement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: "200",
        trigger: "click"
       }
      },
      [
       createElement(
        "el-select",
        {
         props: {
          placeholder: this.placeholder,
          value: this.param,
          clearable: this.isClear
         },
         on: {
          input: value => {
           this.$emit("update:param", value);
           this.callback && this.callback();
          }
         }
        },
        [
         this.selectList.map(item => {
          return createElement("el-option", {
           props: {
            value: item.value,
            label: item.label
           }
          });
         })
        ]
       ),
       createElement(
        "span",
        {
         slot: "reference"
        },
        [
         column.label,
         createElement("i", {
          class: this.filterIcon,
          style: {
           marginLeft: "4px"
          }
         })
        ]
       )
      ]
     )
    ]
   );
  },
  renderDate(createElement, { column, $index }) {
   return createElement(
    "p",
    {
     class: "filters"
    },
    [
     createElement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: this.rederWidth,
        trigger: "click"
       }
      },
      [
       createElement("el-date-picker", {
        props: {
         placeholder: this.placeholder,
         value: this.value,
         type: "daterange",
         rangeSeparator:"至",
         startPlaceholder:"开始日期",
         endPlaceholder:"结束日期",
        },
        style: {
         width: this.rederWidth
        },
        on: {
         input: value => {
          if (value) {
           const startDate = moment(value[0]).format("YYYY-MM-DD");
           const endDate = moment(value[1]).format("YYYY-MM-DD");
           this.$emit("update:startDate", startDate);
           this.$emit("update:endDate", endDate);
           this.callback && this.callback();
          }
         }
        }
       }),
       createElement(
        "span",
        {
         slot: "reference"
        },
        [
         column.label,
         createElement("i", {
          class: this.filterIcon,
          style: {
           marginLeft: "4px"
          }
         })
        ]
       )
      ]
     )
    ]
   );
  }
 }
};
</script>
<!-- index.js -->
import ElTableColumnPro from './ElTableColumnPro'
ElTableColumnPro.install = function(Vue) {
 Vue.component(ElTableColumnPro.name, ElTableColumnPro);
};
export default ElTableColumnPro;

Installation

import ElTableColumnPro from 'components/ElTableColumnPro/index' 
...
...
...
Vue.use(ElTableColumnPro)

Use

 <el-table :data="bankFlow" style="width:100%" stripe>
    <el-table-column-pro :visible="showMore" prop="transactionId" label="流水号" :width="120"> </el-table-column-pro>
    <el-table-column-pro prop="clientCode" label="客户代码 " :width="120" placeholder="请输入客户代码" :callback="requestTransactionLogs" renderType="input" :param.sync="request_params.clientCode"> </el-table-column-pro>
    <el-table-column-pro prop="eventTypeName" label="事件 " placeholder="请选择事件"  :selectList="listEventEnum" :callback="requestTransactionLogs" renderType="select" :param.sync="request_params.event" :width="100"> </el-table-column-pro>
    <el-table-column-pro prop="createTime" :callback="requestTransactionLogs" :startDate.sync="request_params.startDate" :endDate.sync="request_params.endDate" :formatter="$timeformat" label="时间" renderType="date" :width="180" ></el-table-column-pro>
 </el-table>

 <el-table :data="lists.content" v-loading="loading" @row-dblclick="detail" >
    <el-table-column-pro :width="120" prop="clientCode" label="客户代码 " align="center" header-align="center" placeholder="请输入客户代码" :callback="getLists" renderType="input" :param.sync="params.clientCode"></el-table-column-pro>      
    <el-table-column-pro label="内容 " placeholder="请输入内容" :callback="getLists" renderType="input" :param.sync="params.content">
        <template slot-scope="scope">
           <pre class="brush:php;toolbar:false">{{scope.row.content}}

                          I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

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How to use Vue data monitoring method watch

The above is the detailed content of How to use VUE to extend ElTableColumn in element-ui. For more information, please follow other related articles on the PHP Chinese website!