大家在做后台管理系统的时候,写的最多的可能就是表格页面了,一般分三部分:搜索功能区、表格内容区和分页器区。一般这些功能都是使用第三方组件库实现,比如说element-ui,或者vuetify。这两个组件库都各有各的优点,但就table组件来说,我还是比较喜欢vuetify的实现,不用手写一个个column,只要传入headers的配置数组就行,甚至分页器都内置在了table组件里,用起来十分方便。有兴趣可以看看:vuetify data table。
上面是一个经典的用element-ui开发的table页面,而且实际工作中如果每个table页面都写一遍,重复代码太多了,所以不妨写一个table模板组件,减少重复代码。我的思路是这样的:
搜索功能区:
提供searchBar插槽,可以自定义搜索输入框,搜索、重置按钮必有,新增按钮通过props控制显隐。这里对应的代码如下:
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genSearchBar() {
if ( this .noSearchBar || ! this .$scopedSlots.searchBar) return '' ;
return (
<el-form class= "seatch-form" inline={ true } label-width= "100" >
{ this .$scopedSlots.searchBar()}
<el-button
class= "filter-item"
icon= "el-icon-search"
type= "primary"
onClick={ this .handleSearchBtnClick}
>
查询
</el-button>
<el-button
class= "filter-item"
icon= "el-icon-refresh"
onClick={ this .handleResetBtnClick}
>
重置
</el-button>
<el-button
class= "filter-item"
icon= "el-icon-plus"
type= "primary"
v-show={ this .showAddBtn}
onClick={ this .handleAddBtnClick}
>
新增
</el-button>
</el-form>
);
}
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表格内容区:
通过传入headers自动生成columns,参数如下:
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{
label: '性别' ,
prop: 'sex' ,
width: '180' ,
filter: 'sexFilter'
}
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可对应如下代码:
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<el-table-column
prop= "sex"
label= "性别"
width= "180" >
<template slot-scope= "scope" >{{scope.row.sex | sexFilter}}</template>
</el-table-column>
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注意,只支持全局filter。
如果你想自定义column,也提供tableColumn插槽,支持自定义column,可以如下配置:
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{
prop: 'action'
}
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<el-table-column
prop= "action"
label= "操作"
width= "180" >
<template slot-scope= "scope" >
<el-button>编辑</el-button>
<el-button>删除</el-button>
</template>
</el-table-column>
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这样,就会按传入的prop匹配对应的column,十分方便。
实现代码如下:
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genTableSlot(h) {
let customeColumns = this .$scopedSlots.tableColumn
? this .$scopedSlots.tableColumn()
: [];
return this .headers.map((item) => {
// 根据item.prop判断是否使用传入的插槽内容
let foundItem = customeColumns.find(
(ele) =>
ele.componentOptions &&
ele.componentOptions.propsData.prop === item.prop
);
return foundItem
? foundItem
: h( 'el-table-column' , {
props: {
...item,
},
scopedSlots: {
default : (props) => {
// 根据传入的全局filter处理column数据
let filter = this .$options.filters[
item.filter
];
let itemValue = props.row[item.prop];
return h(
'span' ,
filter ? filter(itemValue) : itemValue
);
},
},
});
});
}
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genTable(h) {
return h(
'el-table' ,
{
ref: 'tableRef' ,
props: {
... this .$attrs,
data: this .data,
},
on: {
'selection-change' : (val) => {
this .$emit( 'selection-change' , val);
},
},
},
[... this .genTableSlot(h)]
);
}
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分页器区:
如无特殊需求,分页器功能一致,所以直接内置。
实现代码如下:
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genPagination() {
return (
<div class= "pagination-wrap" >
<el-pagination
layout= "total,prev,pager,next,jumper"
current-page={ this .current}
page-size={ this .pageSize}
total={ this .total}
{...{
on: { 'current-change' : this .handleCurrentChange },
}}
></el-pagination>
</div>
);
}
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最后附完整代码和demo:
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<script>
export default {
name: 'TableTemplate' ,
props: {
data: {
type: Array,
default : () => [],
required: true ,
},
headers: {
type: Array,
default : () => [],
required: true ,
},
current: {
type: Number,
default : 1,
},
pageSize: {
type: Number,
default : 10,
},
total: {
type: Number,
default : 0,
},
noSearchBar: Boolean,
showAddBtn: Boolean,
},
mounted() {
this .$nextTick(() => {
this .$emit( 'search' );
});
},
methods: {
genSearchBar() {
if ( this .noSearchBar || ! this .$scopedSlots.searchBar) return '' ;
return (
<el-form class= "seatch-form" inline={ true } label-width= "100" >
{ this .$scopedSlots.searchBar()}
<el-button
class= "filter-item"
icon= "el-icon-search"
type= "primary"
onClick={ this .handleSearchBtnClick}
>
查询
</el-button>
<el-button
class= "filter-item"
icon= "el-icon-refresh"
onClick={ this .handleResetBtnClick}
>
重置
</el-button>
<el-button
class= "filter-item"
icon= "el-icon-plus"
type= "primary"
v-show={ this .showAddBtn}
onClick={ this .handleAddBtnClick}
>
新增
</el-button>
</el-form>
);
},
genTableSlot(h) {
let customeColumns = this .$scopedSlots.tableColumn
? this .$scopedSlots.tableColumn()
: [];
return this .headers.map((item) => {
// 根据item.prop判断是否使用传入的插槽内容
let foundItem = customeColumns.find(
(ele) =>
ele.componentOptions &&
ele.componentOptions.propsData.prop === item.prop
);
return foundItem
? foundItem
: h( 'el-table-column' , {
props: {
...item,
},
scopedSlots: {
default : (props) => {
let filter = this .$options.filters[
item.filter
];
let itemValue = props.row[item.prop];
return h(
'span' ,
filter ? filter(itemValue) : itemValue
);
},
},
});
});
},
genTable(h) {
return h(
'el-table' ,
{
ref: 'tableRef' ,
props: {
... this .$attrs,
data: this .data,
},
on: {
'selection-change' : (val) => {
this .$emit( 'selection-change' , val);
},
},
},
[... this .genTableSlot(h)]
);
},
genPagination() {
return (
<div class= "pagination-wrap" >
<el-pagination
layout= "total,prev,pager,next,jumper"
current-page={ this .current}
page-size={ this .pageSize}
total={ this .total}
{...{
on: { 'current-change' : this .handleCurrentChange },
}}
></el-pagination>
</div>
);
},
resetPagination() {
this .$emit( 'update:current' , 1);
},
handleCurrentChange(val) {
this .$emit( 'update:current' , val);
this .$emit( 'search' );
},
handleSearchBtnClick() {
this .$emit( 'search' );
},
handleResetBtnClick() {
this .resetPagination();
this .$emit( 'reset' );
},
handleAddBtnClick() {
this .$emit( 'add' );
},
getTableRef() {
return this .$refs.tableRef;
},
},
render(h) {
return (
<div>
{ this .genSearchBar()}
{ this .genTable(h)}
{ this .genPagination()}
</div>
);
},
};
</script>
<style scoped>
.seatch-form {
text-align: left;
}
.pagination-wrap {
margin-top: 20px;
text-align: right;
}
</style>
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Demo:
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<template>
<div>
<table-template
border
:headers= "headers"
:data= "tableData"
:current.sync= "current"
:total= "total"
ref= "tableTemplate"
showAddBtn
@search= "handleSearch"
@reset= "handleReset"
@add= "handleAdd"
@selection-change= "handleSelectionChange"
>
<template #searchBar>
<el-form-item label= "姓名:" prop= "title" >
<el-input class= "filter-item" v-model= "searchForm.title" ></el-input>
</el-form-item>
</template>
<template #tableColumn>
<el-table-column
prop= "selection"
type= "selection"
width= "55"
></el-table-column>
<el-table-column prop= "test" label= "姓名" width= "180" >
<template slot-scope= "scope" >
<el-popover trigger= "hover" placement= "top" >
<p>姓名:{{ scope.row.name }}</p>
<p>住址:{{ scope.row.address }}</p>
<div slot= "reference" class= "name-wrapper" >
<el-tag size= "medium" >{{scope.row.name}}</el-tag>
</div>
</el-popover>
</template>
</el-table-column>
</template>
</table-template>
</div>
</template>
<script>
import TableTemplate from './TableTemplate' ;
export default {
name: 'Demo' ,
components: {
TableTemplate,
},
data() {
return {
current: 1,
total: 100,
headers: [
{
prop: 'selection' ,
},
{
label: '姓名' ,
prop: 'name' ,
width: '100' ,
},
{
label: '年龄' ,
prop: 'year' ,
},
{
label: '性别' ,
prop: 'sex' ,
width: 'sexFilter' ,
},
{
prop: 'test' ,
},
],
tableData: [
{
name: 'curry' ,
year: 18,
sex: 'female' ,
address: '*' ,
},
],
searchForm: {
title: '' ,
},
};
},
methods: {
handleSearch() {
console.log( this .current);
},
handleReset() {
this .searchForm = {
title: '' ,
};
},
handleAdd() {
console.log( '添加' );
},
handleSelectionChange(val) {
console.log(val);
},
getTableRef() {
console.log( this .$refs.tableTemplate.getTableRef());
},
},
};
</script>
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以上就是element-ui封装一个Table模板组件的示例的详细内容,更多关于element-ui封装组件的资料请关注服务器之家其它相关文章!
原文链接:https://segmentfault.com/a/1190000038785865