element-ui封裝一個Table模板組件的示例
大傢在做後臺管理系統的時候,寫的最多的可能就是表格頁面瞭,一般分三部分:搜索功能區、表格內容區和分頁器區。一般這些功能都是使用第三方組件庫實現,比如說element-ui,或者vuetify。這兩個組件庫都各有各的優點,但就table組件來說,我還是比較喜歡vuetify的實現,不用手寫一個個column,隻要傳入headers的配置數組就行,甚至分頁器都內置在瞭table組件裡,用起來十分方便。有興趣可以看看:vuetify data table。
上面是一個經典的用element-ui開發的table頁面,而且實際工作中如果每個table頁面都寫一遍,重復代碼太多瞭,所以不妨寫一個table模板組件,減少重復代碼。我的思路是這樣的:
搜索功能區:
提供searchBar插槽,可以自定義搜索輸入框,搜索、重置按鈕必有,新增按鈕通過props控制顯隱。這裡對應的代碼如下:
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} > 查詢 </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> ); }
表格內容區:
通過傳入headers自動生成columns,參數如下:
{ label: '性別', prop: 'sex', width: '180', filter: 'sexFilter' }
可對應如下代碼:
<el-table-column prop="sex" label="性別" width="180"> <template slot-scope="scope">{{scope.row.sex | sexFilter}}</template> </el-table-column>
註意,隻支持全局filter。
如果你想自定義column,也提供tableColumn插槽,支持自定義column,可以如下配置:
{ prop: 'action' }
<el-table-column prop="action" label="操作" width="180"> <template slot-scope="scope"> <el-button>編輯</el-button> <el-button>刪除</el-button> </template> </el-table-column>
這樣,就會按傳入的prop匹配對應的column,十分方便。
實現代碼如下:
genTableSlot(h) { let customeColumns = this.$scopedSlots.tableColumn ? this.$scopedSlots.tableColumn() : []; return this.headers.map((item) => { // 根據item.prop判斷是否使用傳入的插槽內容 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) => { // 根據傳入的全局filter處理column數據 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.$emit('selection-change', val); }, }, }, [...this.genTableSlot(h)] ); }
分頁器區:
如無特殊需求,分頁器功能一致,所以直接內置。
實現代碼如下:
genPagination() { return ( <div class="pagination-wrap"> <el-pagination layout="total,prev,pager,next,jumper" current-page={this.current} page-size={this.pageSize} total={this.total} {...{ on: { 'current-change': this.handleCurrentChange }, }} ></el-pagination> </div> ); }
最後附完整代碼和demo:
<script> export default { name: 'TableTemplate', props: { data: { type: Array, default: () => [], required: true, }, headers: { type: Array, default: () => [], required: true, }, current: { type: Number, default: 1, }, pageSize: { type: Number, default: 10, }, total: { type: Number, default: 0, }, noSearchBar: Boolean, showAddBtn: Boolean, }, mounted() { this.$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.$scopedSlots.searchBar()} <el-button class="filter-item" icon="el-icon-search" type="primary" onClick={this.handleSearchBtnClick} > 查詢 </el-button> <el-button class="filter-item" icon="el-icon-refresh" onClick={this.handleResetBtnClick} > 重置 </el-button> <el-button class="filter-item" icon="el-icon-plus" type="primary" v-show={this.showAddBtn} onClick={this.handleAddBtnClick} > 新增 </el-button> </el-form> ); }, genTableSlot(h) { let customeColumns = this.$scopedSlots.tableColumn ? this.$scopedSlots.tableColumn() : []; return this.headers.map((item) => { // 根據item.prop判斷是否使用傳入的插槽內容 let foundItem = customeColumns.find( (ele) => ele.componentOptions && ele.componentOptions.propsData.prop === item.prop ); return foundItem ? foundItem : h('el-table-column', { props: { ...item, }, scopedSlots: { default: (props) => { let filter = this.$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.$refs.tableRef; }, }, render(h) { return ( <div> {this.genSearchBar()} {this.genTable(h)} {this.genPagination()} </div> ); }, }; </script> <style scoped> .seatch-form { text-align: left; } .pagination-wrap { margin-top: 20px; text-align: right; } </style>
Demo:
<template> <div> <table-template border :headers="headers" :data="tableData" :current.sync="current" :total="total" ref="tableTemplate" showAddBtn @search="handleSearch" @reset="handleReset" @add="handleAdd" @selection-change="handleSelectionChange" > <template #searchBar> <el-form-item label="姓名:" prop="title"> <el-input class="filter-item" v-model="searchForm.title" ></el-input> </el-form-item> </template> <template #tableColumn> <el-table-column prop="selection" type="selection" width="55" ></el-table-column> <el-table-column prop="test" label="姓名" width="180"> <template slot-scope="scope"> <el-popover trigger="hover" placement="top"> <p>姓名:{{ scope.row.name }}</p> <p>住址:{{ scope.row.address }}</p> <div slot="reference" class="name-wrapper"> <el-tag size="medium">{{scope.row.name}}</el-tag> </div> </el-popover> </template> </el-table-column> </template> </table-template> </div> </template> <script> import TableTemplate from './TableTemplate'; export default { name: 'Demo', components: { TableTemplate, }, data() { return { current: 1, total: 100, headers: [ { prop: 'selection', }, { label: '姓名', prop: 'name', width: '100', }, { label: '年齡', prop: 'year', }, { label: '性別', prop: 'sex', width: 'sexFilter', }, { prop: 'test', }, ], tableData: [ { name: 'curry', year: 18, sex: 'female', address: '天安門', }, ], searchForm: { title: '', }, }; }, methods: { handleSearch() { console.log(this.current); }, handleReset() { this.searchForm = { title: '', }; }, handleAdd() { console.log('添加'); }, handleSelectionChange(val) { console.log(val); }, getTableRef() { console.log(this.$refs.tableTemplate.getTableRef()); }, }, }; </script>
以上就是element-ui封裝一個Table模板組件的示例的詳細內容,更多關於element-ui封裝組件的資料請關註WalkonNet其它相關文章!
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