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這篇文章主要介紹“ElementUI中table單元格合并問題怎么解決”,在日常操作中,相信很多人在ElementUI中table單元格合并問題怎么解決問題上存在疑惑,小編查閱了各式資料,整理出簡單好用的操作方法,希望對大家解答”ElementUI中table單元格合并問題怎么解決”的疑惑有所幫助!接下來,請跟著小編一起來學習吧!
項目中遇到表格單元格合并的需求,在此記錄整個解決過程。
項目使用的是 Element UI,表格使用的是 table 組件。Element UI 的 table 表格組件中對單元格進行合并,需要使用 table 組件的 span-method 屬性。
先看一張成果圖(完整代碼放在末尾):
項目后臺返回的數據格式為樹形結構,這里做簡化展示:
[ { 'column1': '111', 'column2': '222', 'column3': '333', 'children1': [ { 'column6': 666, 'column4': '4440', 'column5': '5550', 'children2': [ { 'column7': '77701', 'column8': '88801', 'column9': '99901' } ] } ] } ]
需要先將樹結構數據轉為一維數組:
// table 表格數據初始化處理,將樹結構數據轉為一維數組 handleData(data, parentId) { data.map((res, index) => { var obj = { id: parentId } for (const key in res) { const isarr = Object.values(res).find((age) => { return Array.isArray(age) }) if (isarr) { if (Array.isArray(res[key])) { for (let i = 0; i < res[key].length; i++) { Object.assign(obj, res[key][i]) data.push(obj) res[key].splice(i, 1) if (res[key].length === 0) { data.splice(index, 1) } this.handleData(data, parentId) } } else { Object.assign(obj, { [key]: res[key] }) } } } }) return data }
因為后臺返回的數據里沒有唯一標識符,所以需要單獨添加一個唯一標識表示轉換為一維數組的數據是出自同一組樹結構里。故此處在展開時單獨加了一個 id 屬性,用來代替唯一標識。如果后臺返回的數據格式就是一個一維數組,可跳過數據格式化步驟。
data() { return { tableData: [], // 合并單元格 column1Arr: [], // column1 column1Index: 0, // column1索引 column2Arr: [], // column2 column2Index: 0, // column2索引 column3Arr: [], // column3 column3Index: 0, // column3索引 column4Arr: [], // column4 column4Index: 0, // column4 column5Arr: [], // column5 column5Index: 0, // column5索引 column6Arr: [], // column6 column6Index: 0 // column6索引 } }
以第一行為基準,一層層對比,參數 data 就是格式化以后的表格數據,以每個數據里的唯一標識 id 作為合并的參照字段:
// 初始化合并行數組 mergeInit() { this.column1Arr = [] // column1 this.column1Index = 0 // column1索引 this.column2Arr = [] // column2 this.column2Index = 0 // column2索引 this.column3Arr = [] // column3 this.column3Index = 0 // column3索引 this.column4Arr = [] // column4 this.column4Index = 0 // column4索引 this.column5Arr = [] // column5 this.column5Index = 0 // column5索引 this.column6Arr = [] // column6 this.column6Index = 0 // column6索引 }, // 合并表格 mergeTable(data) { this.mergeInit() if (data.length > 0) { for (var i = 0; i < data.length; i++) { if (i === 0) { // 第一行必須存在,以第一行為基準 this.column1Arr.push(1) // column1 this.column1Index = 0 this.column2Arr.push(1) // column2 this.column2Index = 0 this.column3Arr.push(1) // column3 this.column3Index = 0 this.column4Arr.push(1) // column4 this.column4Index = 0 this.column5Arr.push(1) // column5 this.column5Index = 0 this.column6Arr.push(1) // column6 this.column6Index = 0 } else { // 判斷當前元素與上一元素是否相同 // column1 if ( data[i].column1 === data[i - 1].column1 && data[i].id === data[i - 1].id ) { this.column1Arr[this.column1Index] += 1 this.column1Arr.push(0) } else { this.column1Arr.push(1) this.column1Index = i } // column2 if ( data[i].column2 === data[i - 1].column2 && data[i].id === data[i - 1].id ) { this.column2Arr[this.column2Index] += 1 this.column2Arr.push(0) } else { this.column2Arr.push(1) this.column2Index = i } // column3 if ( data[i].column3 === data[i - 1].column3 && data[i].id === data[i - 1].id ) { this.column3Arr[this.column3Index] += 1 this.column3Arr.push(0) } else { this.column3Arr.push(1) this.column3Index = i } // column4 if ( data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column4Arr[this.column4Index] += 1 this.column4Arr.push(0) } else { this.column4Arr.push(1) this.column4Index = i } // column5 if ( data[i].column5 === data[i - 1].column5 && data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column5Arr[this.column5Index] += 1 this.column5Arr.push(0) } else { this.column5Arr.push(1) this.column5Index = i } // column6 if ( data[i].column6 === data[i - 1].column6 && data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column6Arr[this.column6Index] += 1 this.column6Arr.push(0) } else { this.column6Arr.push(1) this.column6Index = i } } } } },
注意,同一組數據里可能會有多個 children1 或者 children2,這時合并的時候會有多個條件進行判斷:
handleSpanMethod({ row, column, rowIndex, columnIndex }) { if (columnIndex === 0 || columnIndex === 1) { // 第一列 column1 const _row_1 = this.column1Arr[rowIndex] const _col_1 = _row_1 > 0 ? 1 : 0 return { rowspan: _row_1, colspan: _col_1 } } else if (columnIndex === 2) { // 第二列 column2 const _row_2 = this.column2Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 3) { // 第三列 column3 const _row_2 = this.column3Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 4) { // 第四列 column4 const _row_2 = this.column4Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 5) { // 第五列 column5 const _row_2 = this.column5Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 6) { // 第六列 column6 const _row_2 = this.column6Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } }
<template> <div class="table-wrap"> <el-table :data="tableData" :span-method="handleSpanMethod" :cell- border > <el-table-column prop="id" label="序號" align="center" width="80"> <template slot-scope="scope"> {{ scope.row.id + 1 }} </template> </el-table-column> <el-table-column prop="column1" label="column1" align="center" /> <el-table-column prop="column2" label="column2" align="center" /> <el-table-column prop="column3" label="column3" align="center" /> <el-table-column prop="column4" label="column4" align="center" /> <el-table-column prop="column5" label="column5" align="center" /> <el-table-column prop="column6" label="column6" align="center" /> <el-table-column prop="column7" label="column7" align="center" /> <el-table-column prop="column8" label="column8" align="center" /> <el-table-column prop="column9" label="column9" align="center" /> </el-table> </div> </template> <script> export default { name: 'CellMerge', data() { return { tableData: [], // 合并單元格 column1Arr: [], // column1 column1Index: 0, // column1索引 column2Arr: [], // column2 column2Index: 0, // column2索引 column3Arr: [], // column3 column3Index: 0, // column3索引 column4Arr: [], // column4 column4Index: 0, // column4 column5Arr: [], // column5 column5Index: 0, // column5索引 column6Arr: [], // column6 column6Index: 0 // column6索引 } }, mounted() { this.initTableData() }, methods: { // 初始化表格數據 initTableData() { const newTableData = [ { 'column1': '111', 'column2': '222', 'column3': '333', 'children1': [ { 'column6': 666, 'column4': '4440', 'column5': '5550', 'children2': [ { 'column7': '77701', 'column8': '88801', 'column9': '99901' }, { 'column7': '77702', 'column8': '88802', 'column9': '99902' }, { 'column7': '77703', 'column8': '88803', 'column9': '99903' } ] }, { 'column6': 666, 'column4': '4441', 'column5': '5551', 'children2': [ { 'column7': '77711', 'column8': '88811', 'column9': '99911' } ] }, { 'column6': 666, 'column4': '4442', 'column5': '5552', 'children2': [ { 'column7': '77721', 'column8': '88821', 'column9': '99921' }, { 'column7': '77722', 'column8': '88822', 'column9': '99922' } ] } ] }, { 'column1': '111', 'column2': '222', 'column3': '333', 'children1': [ { 'column6': 666, 'column4': '4440', 'column5': '5550', 'children2': [ { 'column7': '77701', 'column8': '88801', 'column9': '99901' } ] }, { 'column6': 666, 'column4': '4441', 'column5': '5551', 'children2': [ { 'column7': '77711', 'column8': '88811', 'column9': '99911' }, { 'column7': '77712', 'column8': '88812', 'column9': '99912' } ] } ] }, { 'column1': '111', 'column2': '222', 'column3': '333', 'children1': [ { 'column6': 666, 'column4': '4440', 'column5': '5550', 'children2': [ { 'column7': '77701', 'column8': '88801', 'column9': '99901' }, { 'column7': '77702', 'column8': '88802', 'column9': '99902' }, { 'column7': '77703', 'column8': '88803', 'column9': '99903' } ] }, { 'column6': 666, 'column4': '4441', 'column5': '5551', 'children2': [ { 'column7': '77711', 'column8': '88811', 'column9': '99911' } ] } ] } ] this.tableData = [] newTableData.map((res, index) => { const parentId = index this.tableData.push.apply( this.tableData, this.handleData([res], parentId) ) }) this.mergeTable(this.tableData) }, // table 表格數據初始化處理,將樹結構數據轉為一維數組 handleData(data, parentId) { data.map((res, index) => { var obj = { id: parentId } for (const key in res) { const isarr = Object.values(res).find((age) => { return Array.isArray(age) }) if (isarr) { if (Array.isArray(res[key])) { for (let i = 0; i < res[key].length; i++) { Object.assign(obj, res[key][i]) data.push(obj) res[key].splice(i, 1) if (res[key].length === 0) { data.splice(index, 1) } this.handleData(data, parentId) } } else { Object.assign(obj, { [key]: res[key] }) } } } }) return data }, // 初始化合并行數組 mergeInit() { this.column1Arr = [] // column1 this.column1Index = 0 // column1索引 this.column2Arr = [] // column2 this.column2Index = 0 // column2索引 this.column3Arr = [] // column3 this.column3Index = 0 // column3索引 this.column4Arr = [] // column4 this.column4Index = 0 // column4索引 this.column5Arr = [] // column5 this.column5Index = 0 // column5索引 this.column6Arr = [] // column6 this.column6Index = 0 // column6索引 }, // 合并表格 mergeTable(data) { this.mergeInit() if (data.length > 0) { for (var i = 0; i < data.length; i++) { if (i === 0) { // 第一行必須存在,以第一行為基準 this.column1Arr.push(1) // column1 this.column1Index = 0 this.column2Arr.push(1) // column2 this.column2Index = 0 this.column3Arr.push(1) // column3 this.column3Index = 0 this.column4Arr.push(1) // column4 this.column4Index = 0 this.column5Arr.push(1) // column5 this.column5Index = 0 this.column6Arr.push(1) // column6 this.column6Index = 0 } else { // 判斷當前元素與上一元素是否相同 // column1 if ( data[i].column1 === data[i - 1].column1 && data[i].id === data[i - 1].id ) { this.column1Arr[this.column1Index] += 1 this.column1Arr.push(0) } else { this.column1Arr.push(1) this.column1Index = i } // column2 if ( data[i].column2 === data[i - 1].column2 && data[i].id === data[i - 1].id ) { this.column2Arr[this.column2Index] += 1 this.column2Arr.push(0) } else { this.column2Arr.push(1) this.column2Index = i } // column3 if ( data[i].column3 === data[i - 1].column3 && data[i].id === data[i - 1].id ) { this.column3Arr[this.column3Index] += 1 this.column3Arr.push(0) } else { this.column3Arr.push(1) this.column3Index = i } // column4 if ( data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column4Arr[this.column4Index] += 1 this.column4Arr.push(0) } else { this.column4Arr.push(1) this.column4Index = i } // column5 if ( data[i].column5 === data[i - 1].column5 && data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column5Arr[this.column5Index] += 1 this.column5Arr.push(0) } else { this.column5Arr.push(1) this.column5Index = i } // column6 if ( data[i].column6 === data[i - 1].column6 && data[i].column4 === data[i - 1].column4 && data[i].id === data[i - 1].id ) { this.column6Arr[this.column6Index] += 1 this.column6Arr.push(0) } else { this.column6Arr.push(1) this.column6Index = i } } } } }, handleSpanMethod({ row, column, rowIndex, columnIndex }) { if (columnIndex === 0 || columnIndex === 1) { // 第一列 column1 const _row_1 = this.column1Arr[rowIndex] const _col_1 = _row_1 > 0 ? 1 : 0 return { rowspan: _row_1, colspan: _col_1 } } else if (columnIndex === 2) { // 第二列 column2 const _row_2 = this.column2Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 3) { // 第三列 column3 const _row_2 = this.column3Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 4) { // 第四列 column4 const _row_2 = this.column4Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 5) { // 第五列 column5 const _row_2 = this.column5Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } else if (columnIndex === 6) { // 第六列 column6 const _row_2 = this.column6Arr[rowIndex] const _col_2 = _row_2 > 0 ? 1 : 0 return { rowspan: _row_2, colspan: _col_2 } } } } } </script> <style lang="scss" scoped> .table-wrap { width: 100%; height: 100%; padding: 20px; } </style>
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