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> ); } |
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' } |
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> |
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> |
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 .$emit( 'selection-change' , val); }, }, }, [... this .genTableSlot(h)] ); } |
分页器区:
如无特殊需求,分页器功能一致,所以直接内置。
实现代码如下:
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genPagination() { return ( <div class= "pagination-wrap" > <el-pagination layout= "total,prev,pager,next,jumper" current-page={ this .current} page-size={ this .pageSize} total={ this .total} {...{ on: { 'current-change' : this .handleCurrentChange }, }} ></el-pagination> </div> ); } |
最后附完整代码和demo:
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<script> export default { name: 'TableTemplate' , props: { data: { type: Array, default : () => [], required: true , }, headers: { type: Array, default : () => [], required: true , }, current: { type: Number, default : 1, }, pageSize: { type: Number, default : 10, }, total: { type: Number, default : 0, }, noSearchBar: Boolean, showAddBtn: Boolean, }, mounted() { this .$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 .$refs.tableRef; }, }, render(h) { return ( <div> { this .genSearchBar()} { this .genTable(h)} { this .genPagination()} </div> ); }, }; </script> <style scoped> .seatch-form { text-align: left; } .pagination-wrap { margin-top: 20px; text-align: right; } </style> |
Demo:
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<template> <div> <table-template border :headers= "headers" :data= "tableData" :current.sync= "current" :total= "total" ref= "tableTemplate" showAddBtn @search= "handleSearch" @reset= "handleReset" @add= "handleAdd" @selection-change= "handleSelectionChange" > <template #searchBar> <el-form-item label= "姓名:" prop= "title" > <el-input class= "filter-item" v-model= "searchForm.title" ></el-input> </el-form-item> </template> <template #tableColumn> <el-table-column prop= "selection" type= "selection" width= "55" ></el-table-column> <el-table-column prop= "test" label= "姓名" width= "180" > <template slot-scope= "scope" > <el-popover trigger= "hover" placement= "top" > <p>姓名:{{ scope.row.name }}</p> <p>住址:{{ scope.row.address }}</p> <div slot= "reference" class= "name-wrapper" > <el-tag size= "medium" >{{scope.row.name}}</el-tag> </div> </el-popover> </template> </el-table-column> </template> </table-template> </div> </template> <script> import TableTemplate from './TableTemplate' ; export default { name: 'Demo' , components: { TableTemplate, }, data() { return { current: 1, total: 100, headers: [ { prop: 'selection' , }, { label: '姓名' , prop: 'name' , width: '100' , }, { label: '年龄' , prop: 'year' , }, { label: '性别' , prop: 'sex' , width: 'sexFilter' , }, { prop: 'test' , }, ], tableData: [ { name: 'curry' , year: 18, sex: 'female' , address: '天安门' , }, ], searchForm: { title: '' , }, }; }, methods: { handleSearch() { console.log( this .current); }, handleReset() { this .searchForm = { title: '' , }; }, handleAdd() { console.log( '添加' ); }, handleSelectionChange(val) { console.log(val); }, getTableRef() { console.log( this .$refs.tableTemplate.getTableRef()); }, }, }; </script> |
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