我是 VueJS 新手。我不知道如何在 ui-element 库的表中使用“计算”值。这是我的尝试：
<template>
<div class="row">
<div class="col-md-12">
<h4 class="title">Commandes en cours</h4>
</div>
<!--<div v-if="$can('manage-order')">You can manage order.</div>-->
<div class="col-12">
<card title="">
<div>
<div class="col-12 d-flex justify-content-center justify-content-sm-between flex-wrap">
<el-select
class="select-default mb-3"
style="width: 200px"
v-model="pagination.perPage"
placeholder="Per page">
<el-option
class="select-default"
v-for="item in pagination.perPageOptions"
:key="item"
:label="item"
:value="item">
</el-option>
</el-select>
<el-input type="search"
class="mb-3"
style="width: 200px"
placeholder="Search records"
v-model="searchQuery"
aria-controls="datatables"/>
</div>
<div class="col-sm-12">
<el-table stripe
style="width: 100%;"
:data="queriedData"
border>
<el-table-column v-for="column in tableColumns"
:key="column.label"
:min-width="column.minWidth"
:prop="column.prop"
:label="column.label">
</el-table-column>
<el-table-column
:min-width="120"
fixed="right"
label="Actions">
<template slot-scope="props">
<a v-tooltip.top-center="'Like'" class="btn-info btn-simple btn-link"
@click="handleLike(props.$index, props.row)">
<i class="fa fa-heart"></i></a>
<a v-tooltip.top-center="'Edit'" class="btn-warning btn-simple btn-link"
@click="handleEdit(props.$index, props.row)"><i
class="fa fa-edit"></i></a>
<a v-tooltip.top-center="'Delete'" class="btn-danger btn-simple btn-link"
@click="handleDelete(props.$index, props.row)"><i class="fa fa-times"></i></a>
</template>
</el-table-column>
</el-table>
</div>
</div>
<div slot="footer" class="col-12 d-flex justify-content-center justify-content-sm-between flex-wrap">
<div class="">
<p class="card-category">Showing {{from + 1}} to {{to}} of {{total}} entries</p>
</div>
<l-pagination class="pagination-no-border"
v-model="pagination.currentPage"
:per-page="pagination.perPage"
:total="pagination.total">
</l-pagination>
</div>
</card>
</div>
</div>
</template>
<script>
import {Table, TableColumn, Select, Option} from 'element-ui'
import LPagination from 'src/components/Pagination.vue'
import Fuse from 'fuse.js'
export default {
components: {
LPagination,
[Table.name]: Table,
[Select.name]: Select,
[Option.name]: Option,
[TableColumn.name]: TableColumn
},
computed: {
clientName(customer){
return customer.firstname + ' '+ customer.lastname
},
pagedData () {
return this.tableData.slice(this.from, this.to)
},
/***
* Searches through table data and returns a paginated array.
* Note that this should not be used for table with a lot of data as it might be slow!
* Do the search and the pagination on the server and display the data retrieved from server instead.
* @returns {computed.pagedData}
*/
queriedData () {
let result = this.tableData
if (this.searchQuery !== '') {
result = this.fuseSearch.search(this.searchQuery)
this.pagination.total = result.length
}
return result.slice(this.from, this.to)
},
to () {
let highBound = this.from + this.pagination.perPage
if (this.total < highBound) {
highBound = this.total
}
return highBound
},
from () {
return this.pagination.perPage * (this.pagination.currentPage - 1)
},
total () {
this.pagination.total = this.tableData.length
return this.tableData.length
}
},
data () {
return {
pagination: {
perPage: 5,
currentPage: 1,
perPageOptions: [5, 10, 25, 50],
total: 0
},
searchQuery: '',
propsToSearch: ['id_order'],
tableColumns: [
{
prop: 'id_order',
label: 'ID',
minWidth: 200
},
{
prop: "clientName(customer)",
label: 'Client',
minWidth: 200,
}
],
fuseSearch: null,
tableData:[]
}
},
methods: {
handleLike (index, row) {
alert(`Your want to like ${row.name}`)
},
handleEdit (index, row) {
alert(`Your want to edit ${row.name}`)
},
handleDelete (index, row) {
let indexToDelete = this.tableData.findIndex((tableRow) => tableRow.id === row.id)
if (indexToDelete >= 0) {
this.tableData.splice(indexToDelete, 1)
}
}
},
mounted () {
this.fuseSearch = new Fuse(this.tableData, {keys: ['id_order']})
},
created (){
this.$store.dispatch('ps_orders/get_ps_orders').then(
this.tableData = this.$store.getters["ps_orders/orders"])
}
}
</script>
<style>
</style>
我的对象就像（一行）
{
"id_order": 4641,
"customer": {
"id_customer": 9008,
"firstname": "Pierre",
"lastname": "dupont"
}
}
在“客户”栏中我想要
customer.firstname + " " + customer.lastname答案是：你不能声明一个带有参数的计算，这里是解决方法
<el-table-column
label="Client" >
<template slot-scope="scope">
{{ clientName(scope.row.customer) }}
</template>
</el-table-column>
并且
computed: {
clientName(){
return (customer) => customer.firstname + ' '+ customer.lastname
},
抱歉，但这是简单的方法 - 计算 clientName 返回函数，它没有意义。正确的方法是将 clientName 按原样放入方法中，这只是给初学者洗脑:)
methods: {
clientName(customer){
return customer.firstname + ' '+ customer.lastname
},
}