关于前端:vueelement动态表头的写法三

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这个动静表头是比较复杂的,因为他的不固定的列的表头还是多级表头,这样的话,数据的层级就会比拟多,解决起来比较复杂。过后求教了在公司呆了 12 年的前端大佬才把这个动静表头解决好,上面还是看一下这个动静表头难在哪里吧


<el-table :data="tableListData" style="width: 100%" border height class="table-fixed">
    <el-table-column prop="SectionName" label="标段名称" fixed :key=Math.random() width="120"
        :render-header="labelHead">
    </el-table-column>
    <el-table-column prop="SectionScore" label="标段综合得分" fixed :key=Math.random() width="120"
        :render-header="labelHead">
    </el-table-column>

    <el-table-column v-for="column in lstAssessColumns" :key="Math.random()" :label="column.columnName"
        :render-header="labelHead">
        <el-table-column v-for="child in column.children" :key="Math.random()" :label="child.columnName"
            :render-header="labelHead" :prop="child.columnId" :render-header="labelHead" width="120">
        </el-table-column>
    </el-table-column>

    <el-table-column v-for="column in lstAssessQualityColumns" :key="Math.random()"
        :render-header="labelHead" :label="column.columnName">
        <el-table-column v-for="child in column.children" :key="Math.random()" :label="child.columnName"
            :prop="child.columnId" :render-header="labelHead" width="160">
        </el-table-column>
    </el-table-column>

    <el-table-column v-for="column in lstMesureColumns" :key="Math.random()" :label="column.columnName"
        :render-header="labelHead">
        <el-table-column v-for="child in column.children" :key="Math.random()" :label="child.columnName"
            :prop="child.columnId" :render-header="labelHead" width="160">
            <template scope="scope">
                <div v-if="Object.prototype.toString.call(scope.row[child.columnId]) ==='[object Array]'">
                    <div v-for="d in scope.row[child.columnId]">{{d}}</div>
                </div>
                <div v-else>
                    {{scope.row[child.columnId]}}
                </div>
            </template>
        </el-table-column>
    </el-table-column>
</el-table>
var rows=[
    {
        "TaskId": "bb889c39-ede9-40f2-a52c-2763de810f6b",
        "TaskName": "12 月份精装修品质巡逻三标唐彩",
        "SectionId": "ee571575-db53-4b09-b96b-81abfd871fba",
        "SectionName": "精装修标段 - 唐彩装璜",
        "SectionScore": 92.21,
        "UploadTime": "2020-12-23T08:26:30.06",
        "strUploadTime": "2020-12-23",
        "Rank": 1,
        "Ranking": 1,
        "ContractorSupplierLeader": "韩仕才",
        "SupervisorSupplierLeader": "王昆",
        "BuildingName": "8#,15#",
        "BuildingArea": 59180.53,
        "lstAssessTable": [
            {
                "TableId": "8323f449-3903-438b-a1ab-3f2eff15dafa",
                "TableName": "全装修工程材料查看评估",
                "RowNo": null,
                "TableScore": 94.74,
                "Weight": 20,
                "WeightScore": 18.95,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "c63c9e47-4a13-4391-bd15-3978efc19344",
                "TableName": "全装修工程平安文化施工查看评分表",
                "RowNo": null,
                "TableScore": 86.11,
                "Weight": 20,
                "WeightScore": 17.22,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "5d369cb0-a028-4174-9945-d17c59df2e28",
                "TableName": "全装修工程质量检查评分表",
                "RowNo": null,
                "TableScore": 91.32,
                "Weight": 30,
                "WeightScore": 27.4,
                "MajorType": null,
                "Attribute": null
            }
        ],
        "lstAssessTableQuality": [],
        "lstMesureTable": [
            {
                "TableId": "0a2b1535-1e17-4090-bc95-557101c56e3a",
                "TableName": "全装修工程实测数据记录表(简装)",
                "RowNo": null,
                "MesureTableScore": 95.48,
                "Weight": 30,
                "WeightScore": 28.64,
                "LstMesureRange": [
                    {
                        "BuildingName": "15#",
                        "YIndex": 36,
                        "HouseNo": "3601",
                        "SumPassCount": 87,
                        "SumMesureCount": 88,
                        "MesureRangeScore": 98.86
                    },
                    {
                        "BuildingName": "8#",
                        "YIndex": 37,
                        "HouseNo": "3701",
                        "SumPassCount": 154,
                        "SumMesureCount": 163,
                        "MesureRangeScore": 94.48
                    },
                    {
                        "BuildingName": "15#",
                        "YIndex": 37,
                        "HouseNo": "3702",
                        "SumPassCount": 86,
                        "SumMesureCount": 88,
                        "MesureRangeScore": 97.73
                    },
                    {
                        "BuildingName": "8#",
                        "YIndex": 36,
                        "HouseNo": "3601",
                        "SumPassCount": 81,
                        "SumMesureCount": 88,
                        "MesureRangeScore": 92.05
                    }
                ]
            }
        ],
        "QualityScore": 0,
        "QualitySumWeight": 0,
        "QualityWeightScore": 0
    },
    {
        "TaskId": "dc907d74-c91d-417b-9995-c3e1108b4237",
        "TaskName": "精装修品质巡逻四标和胜",
        "SectionId": "74efe0bd-1944-4976-9f7f-411665aafef5",
        "SectionName": "精装修标段 - 和胜装璜",
        "SectionScore": 91.26,
        "UploadTime": "2020-12-23T08:29:32.52",
        "strUploadTime": "2020-12-23",
        "Rank": 2,
        "Ranking": 2,
        "ContractorSupplierLeader": "郭治国",
        "SupervisorSupplierLeader": "王昆",
        "BuildingName": "19#,18#",
        "BuildingArea": 67122.61,
        "lstAssessTable": [
            {
                "TableId": "5d369cb0-a028-4174-9945-d17c59df2e28",
                "TableName": "全装修工程质量检查评分表",
                "RowNo": null,
                "TableScore": 89.06,
                "Weight": 30,
                "WeightScore": 26.72,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "8323f449-3903-438b-a1ab-3f2eff15dafa",
                "TableName": "全装修工程材料查看评估",
                "RowNo": null,
                "TableScore": 92.86,
                "Weight": 20,
                "WeightScore": 18.57,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "c63c9e47-4a13-4391-bd15-3978efc19344",
                "TableName": "全装修工程平安文化施工查看评分表",
                "RowNo": null,
                "TableScore": 84.78,
                "Weight": 20,
                "WeightScore": 16.96,
                "MajorType": null,
                "Attribute": null
            }
        ],
        "lstAssessTableQuality": [],
        "lstMesureTable": [
            {
                "TableId": "0a2b1535-1e17-4090-bc95-557101c56e3a",
                "TableName": "全装修工程实测数据记录表(简装)",
                "RowNo": null,
                "MesureTableScore": 96.71,
                "Weight": 30,
                "WeightScore": 29.01,
                "LstMesureRange": [
                    {
                        "BuildingName": "18#",
                        "YIndex": 12,
                        "HouseNo": "1201",
                        "SumPassCount": 75,
                        "SumMesureCount": 77,
                        "MesureRangeScore": 97.4
                    },
                    {
                        "BuildingName": "19#",
                        "YIndex": 13,
                        "HouseNo": "1302",
                        "SumPassCount": 54,
                        "SumMesureCount": 56,
                        "MesureRangeScore": 96.43
                    },
                    {
                        "BuildingName": "18#",
                        "YIndex": 10,
                        "HouseNo": "1002",
                        "SumPassCount": 67,
                        "SumMesureCount": 70,
                        "MesureRangeScore": 95.71
                    },
                    {
                        "BuildingName": "19#",
                        "YIndex": 10,
                        "HouseNo": "1002",
                        "SumPassCount": 62,
                        "SumMesureCount": 64,
                        "MesureRangeScore": 96.88
                    },
                    {
                        "BuildingName": "18#",
                        "YIndex": 8,
                        "HouseNo": "801",
                        "SumPassCount": 68,
                        "SumMesureCount": 70,
                        "MesureRangeScore": 97.14
                    }
                ]
            }
        ],
        "QualityScore": 0,
        "QualitySumWeight": 0,
        "QualityWeightScore": 0
    },
    {
        "TaskId": "13f62f14-dbf0-4330-9fe4-bfded7eaa16a",
        "TaskName": "2020 年 12 月简装评估查看",
        "SectionId": "de10a60b-6ce8-46dc-836c-20e7dbafadce",
        "SectionName": "印二标段",
        "SectionScore": 90.89,
        "UploadTime": "2020-12-25T07:55:25.443",
        "strUploadTime": "2020-12-25",
        "Rank": 3,
        "Ranking": 3,
        "ContractorSupplierLeader": "","SupervisorSupplierLeader":" 王昆 ","BuildingName":"5#","BuildingArea": 25481.15,"lstAssessTable": [
            {
                "TableId": "8323f449-3903-438b-a1ab-3f2eff15dafa",
                "TableName": "全装修工程材料查看评估",
                "RowNo": null,
                "TableScore": 92.86,
                "Weight": 20,
                "WeightScore": 18.57,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "5d369cb0-a028-4174-9945-d17c59df2e28",
                "TableName": "全装修工程质量检查评分表",
                "RowNo": null,
                "TableScore": 87.33,
                "Weight": 30,
                "WeightScore": 26.2,
                "MajorType": null,
                "Attribute": null
            },
            {
                "TableId": "c63c9e47-4a13-4391-bd15-3978efc19344",
                "TableName": "全装修工程平安文化施工查看评分表",
                "RowNo": null,
                "TableScore": 82.93,
                "Weight": 20,
                "WeightScore": 16.59,
                "MajorType": null,
                "Attribute": null
            }
        ],
        "lstAssessTableQuality": [],
        "lstMesureTable": [
            {
                "TableId": "0a2b1535-1e17-4090-bc95-557101c56e3a",
                "TableName": "全装修工程实测数据记录表(简装)",
                "RowNo": null,
                "MesureTableScore": 98.42,
                "Weight": 30,
                "WeightScore": 29.53,
                "LstMesureRange": [
                    {
                        "BuildingName": "5#",
                        "YIndex": 8,
                        "HouseNo": "801",
                        "SumPassCount": 37,
                        "SumMesureCount": 38,
                        "MesureRangeScore": 97.37
                    },
                    {
                        "BuildingName": "5#",
                        "YIndex": 10,
                        "HouseNo": "1002",
                        "SumPassCount": 38,
                        "SumMesureCount": 38,
                        "MesureRangeScore": 100
                    },
                    {
                        "BuildingName": "5#",
                        "YIndex": 14,
                        "HouseNo": "1401",
                        "SumPassCount": 38,
                        "SumMesureCount": 38,
                        "MesureRangeScore": 100
                    },
                    {
                        "BuildingName": "5#",
                        "YIndex": 11,
                        "HouseNo": "1102",
                        "SumPassCount": 37,
                        "SumMesureCount": 38,
                        "MesureRangeScore": 97.37
                    },
                    {
                        "BuildingName": "5#",
                        "YIndex": 7,
                        "HouseNo": "701",
                        "SumPassCount": 37,
                        "SumMesureCount": 38,
                        "MesureRangeScore": 97.37
                    }
                ]
            }
        ],
        "QualityScore": 0,
        "QualitySumWeight": 0,
        "QualityWeightScore": 0
    }
]
if (rows && rows.length > 0) {var lstAssessColumnsDD = {}
    _this.lstAssessColumns = []

    var lstAssessQualityDD = {}
    _this.lstAssessQualityColumns = [{
        columnName: '标段品质危险加权分',
        columnId: 'lstAssessTableQuality',
        children: []}]

    var lstMesureColumnsDD = {}
    _this.lstMesureColumns = []

    rows.forEach(function (row) { 
        var lstAssessTable = row.lstAssessTable
        if (lstAssessTable) {lstAssessTable.forEach(function (item) {
                // 去重解决
                if (!lstAssessColumnsDD[item.TableId]) {lstAssessColumnsDD[item.TableId] = true
                    // 解决多级表头,并把行转成列
                    _this.lstAssessColumns.push({columnName: item.TableName + `(${item.Weight}%)`,
                        columnId: item.TableId,
                        children: [
                            {
                                columnId: item.TableId + '_TableScore',
                                columnName: '标段平安文化分'
                            },
                            {
                                columnId: item.TableId + '_WeightScore',
                                columnName: '加权得分'
                            }
                        ]
                    })
                }

                _this.$set(row, item.TableId + '_TableScore', item.TableScore)
                _this.$set(row, item.TableId + '_WeightScore', item.WeightScore)
            })
        }

        var lstAssessQuality = row.lstAssessTableQuality
        if (lstAssessQuality) {lstAssessQuality.forEach(function (item) {if (!lstAssessQualityDD[item.TableId]) {lstAssessQualityDD[item.TableId] = true
                    _this.lstAssessQualityColumns[0].children.push({
                        columnId: item.TableId + '_TableScore',
                        columnName: item.TableName + `(${item.Weight}%)`
                    })
                }

                _this.$set(row, item.TableId + '_TableScore', item.TableScore)
            })  
        }

        var lstMesureTable = row.lstMesureTable
        if (lstMesureTable) {lstMesureTable.forEach(function (item) {if (!lstMesureColumnsDD[item.TableId]) {lstMesureColumnsDD[item.TableId] = true
                    _this.lstMesureColumns.push({columnName: item.TableName + `(${item.Weight}%)`,
                        columnId: item.TableId,
                        children: [{
                                columnId: item.TableId + '_HouseNo',
                                columnName: '实测测区'
                            },
                            {
                                columnId: item.TableId + '_MesureRangeScore',
                                columnName: '测区得分'
                            },
                            {
                                columnId: item.TableId + '_MesureTableScore',
                                columnName: '实测实量均匀得分'
                            },
                            {
                                columnId: item.TableId + '_WeightScore',
                                columnName: '加权得分'
                            }
                        ]
                    })
                }

                _this.$set(row, item.TableId + '_HouseNo', item.LstMesureRange && item.LstMesureRange.map(function (d) {return d.HouseNo}) || [])

                _this.$set(row, item.TableId + '_MesureRangeScore', item.LstMesureRange && item.LstMesureRange.map(function (d) {return d.MesureRangeScore}) || [])

                _this.$set(row, item.TableId + '_MesureTableScore', item.MesureTableScore)
                _this.$set(row, item.TableId + '_WeightScore', item.WeightScore)
            })                                      
        }

    })
    _this.lstAssessQualityColumns[0].children.push({
        columnId: 'QualityScore',
        columnName: '标段品质危险得分'
    })

    _this.lstAssessQualityColumns[0].children.push({
        columnId: 'QualityWeightScore',
        columnName: '加权得分'
    })

}

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