详解VUE 对element-ui中的ElTableColumn扩展

<!-- eltablecolumnpro.vue -->
<template>
   <el-table-column v-if="visible" :formatter="formatter" :align='align' :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, $index }) {
   return createelement(
    "div",
    {
     class: "filters",
     style: {
      color: column.color
     }
    },
    [
     createelement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: "200",
        trigger: "click"
       }
      },
      [
       createelement("el-input", {
        props: {
         placeholder: this.placeholder,
         value: this.param
        },
        nativeon: {
         keyup: event => {
          if (event.keycode === 13) {
           this.$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, $index }) {
   return createelement(
    "div",
    {
     class: "filters",
     style: {
      color: column.color
     }
    },
    [
     createelement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: "200",
        trigger: "click"
       }
      },
      [
       createelement(
        "el-select",
        {
         props: {
          placeholder: this.placeholder,
          value: this.param,
          clearable: this.isclear
         },
         on: {
          input: value => {
           this.$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, $index }) {
   return createelement(
    "div",
    {
     class: "filters"
    },
    [
     createelement(
      "el-popover",
      {
       props: {
        placement: "bottom",
        width: this.rederwidth,
        trigger: "click"
       }
      },
      [
       createelement("el-date-picker", {
        props: {
         placeholder: this.placeholder,
         value: this.value,
         type: "daterange",
         rangeseparator:"至",
         startplaceholder:"开始日期",
         endplaceholder:"结束日期",
        },
        style: {
         width: this.rederwidth
        },
        on: {
         input: value => {
          if (value) {
           const startdate = moment(value[0]).format("yyyy-mm-dd");
           const enddate = moment(value[1]).format("yyyy-mm-dd");
           this.$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;

import eltablecolumnpro from 'components/eltablecolumnpro/index' 
...
...
...

vue.use(eltablecolumnpro)

 <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>{{scope.row.content}}</pre>
        </template>
    </el-table-column-pro>
    <el-table-column-pro prop="username" :width="100" label="记录人 " align="center" header-align="center" placeholder="请输入记录人" :callback="getlists" rendertype="input" :param.sync="params.username"></el-table-column-pro>
    <el-table-column prop="createtime" width="150" label="记录时间" align="center" header-align="center" :formatter="$datetimeformat"></el-table-column>
 </el-table>