How element-ui implements reuse of Table components-JS Tutorial-php.cn

How element-ui implements reuse of Table components

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Release： 2018-04-14 15:02:46

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This time I will show you how element-ui implements the reuse of Table components. What are the precautions for element-ui to implement reuse of Table components. The following is a practical case, let's take a look.

The table component of Ele.me is very powerful and is basically sufficient for various tables in the project, but...I am not used to its column-based operations. =. =So it was changed to another way (I won’t tell you that the essence has not changed).

There are many tables in the project, so reusability is the most important

step one

Let’s start with a basic table display

Official tableData

tableData: [{
 date: '2016-05-02',
 name: '王小虎',
 address: '上海市普陀区金沙江路 1518 弄'
}, {
 date: '2016-05-04',
 name: '王小虎',
 address: '上海市普陀区金沙江路 1517 弄'
}, {
 date: '2016-05-01',
 name: '王小虎',
 address: '上海市普陀区金沙江路 1519 弄'
}, {
 date: '2016-05-03',
 name: '王小虎',
 address: '上海市普陀区金沙江路 1516 弄'
}]

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table.vue

<template>
 <el-table :data="tableData" border>
  <el-table-column prop="date" label="日期"></el-table-column>
  <el-table-column prop="name" label="姓名"></el-table-column>
  <el-table-column prop="address" label="地址"></el-table-column>
 </el-table>
</template>

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Step 2

Simplify the table:

//table.vue
<template>
 <el-table :data="tableData" border>
  <el-table-column v-for="(item,key) in tableKey" 
  :key="key"
  :prop="item.value"
  :label="item.name"></el-table-column>
 </el-table>
</template>
<script>
export default{
 name: 'table',
 data(){
  return{
   tableData:[...],
   tableKey: [{
    name: 'date',
    value: '日期'
   },{
    name: '姓名',
    value: 'name'
   },{
    name: '地址',
    value: 'address'
   }]
  }
 }
}
</script>

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Step 3

To reuse table.vue is to give it data and tell it my field names at the same time

Create a new parent component sl_table.vue

//sl_table.vue
<template>
 <sl-table :tableData="tableData" :tableKey="tableKey"></sl-table>
</template>
<script>
import Table from '@/components/table'
export default{
 name: 'sl-table',
 data(){
  return {
   tableData: [...]
   tableKey: [{
    name: 'date',
    value: '日期'
   },{
    name: '姓名',
    value: 'name'
   },{
    name: '地址',
    value: 'address'
   }]
  }
 },
 components: {
  'sl-table': Table
 }
}
</script>

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table.vue is even simpler

//table.vue
<template>
 <el-table :data="tableData" border>
  <el-table-column v-for="(item,key) in tableKey" 
  :key="key"
  :prop="item.value"
  :label="item.name"></el-table-column>
 </el-table>
</template>
<script>
export default{
 name: 'table',
 data(){
  return{
   
  }
 },
 props:['tableData','tableKey'],
}
</script>

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Step 4

The form of the table can be modified according to needs

Column width

This is relatively simple, you can directly add a attribute

//sl_table.vue
...
 data(){
  return {
   tableData: [...]
   tableKey: [{
    name: 'date',
    value: '日期',
    width: 80
   },{
    name: '姓名',
    value: 'name',
    width: 80
   },{
    name: '地址',
    value: 'address'
   }]
  }
 },
...

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table.vue

//table.vue
...
<el-table-column v-for="(item,key) in tableKey" 
:key="key"
:prop="item.value"
:label="item.name"
:width="item.width"></el-table-column>
...

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Custom template columns

If we need to tell the component which is a custom column, so add a property operate

table.vue

<el-table-column v-for="(item,key) in tableKey" 
v-if="!item.operate"
:key="key"
:prop="item.value"
:label="item.name"
:width="item.width"></el-table-column>
<!-- 自定义 -->
<el-table-column v-else>
 <template scope="scope">
  <slot :name="item.value" :$index="scope.$index" :row="scope.row"></slot>
 </template>
</el-table-column>
//sl_table.vue
<sl-table :tableData="tableData" :tableKey="tableKey">
 <template slot="date" scope="scope">
  <span>{{ scope.row.date | DateFilter }}</span>
 </template>
</sl-table>
...
  data(){
   return {
    tableData: [...]
    tableKey: [{
     name: 'date',
     value: '日期',
     operate: true
    },{
     name: '姓名',
     value: 'name',
     operate: false
    },{
     name: '地址',
     value: 'address',
     operate: false
    }]
   }
  },
  filters: {
   DateFilter(){...}
  }
...

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Table expand row

Similar to width, as long as sl_table.vue passes in an isExpand attribute. Here is an effect that can only expand one line at a time:

//sl_table.vue
<sl-table :tableData="tableData" :tableKey="tableKey" :isExpand="true" :isExpandOnly="true">
 <template slot="expand" scope="scope">
  {{...expand something}}
 </template>
 ...
</sl-table>

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table.vue

//table.vue
<el-table :data="tableData" border @expand="handleExpand" ref="raw_table">
 <el-table-column v-if="isExpand" type="expand">
  <template scope="scope">
   <slot name="expand" :$index="scope.$index" :row="scope.row"></slot>
  </template>
 </el-table-column>
</el-table>
...
props: ['tableData','tableKey','isExpand','isExpandOnly'],
methods: {
 handleExpand(row,is_expand){
  if(this.isExpand && this.isExpandOnly){
   this.$refs.raw_table.store.states.expandRows = expanded ? [row] : [] 
  }
 }
}

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Other (sorting, multi-selection) operations are also added similarly. . . No need to go into details.

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!