this._uid:Vue 内部为每个组件实例分配的唯一 ID

Vue 提供了一些方法可以帮助你区分组件实例,例如通过 this._uid(Vue 内部为每个组件实例分配的唯一 ID)或自定义标识符。

以下是具体的实现步骤和代码示例:

 console.log("当前组件实例ID:", this._uid, "时间戳:", new Date().toISOString());

<template> <div class="page-container"> <el-row :gutter="20"> <!-- 查询区域 --> <div class="search-wrapper"> <el-form :inline="true" label-width="100px" @submit.prevent="getList"> <el-form-item label="名称"> <el-input v-model="queryParams.name" placeholder="请输入名称" clearable/> </el-form-item> <el-form-item label="责任人"> <el-input v-model="queryParams.respPerson" placeholder="请输入责任人" clearable/> </el-form-item> <el-form-item> <el-button type="primary" @click="getList">查询</el-button> <el-button @click="resetQuery">重置</el-button> <el-button type="primary" @click="toggleGantt" style="margin-left: 10px;" > {{ showGantt ? '收起甘特图' : '展开甘特图' }} </el-button> </el-form-item> </el-form> </div> <div class="table-container"> <el-table ref="table" :data="listData" row-key="uid" border :row-style="{ height: '30px' }" :tree-props="{ children: 'children', hasChildren: 'hasChildren' }" @row-click="handleRowClick" @expand-change="handleExpandChange" highlight-current-row > <el-table-column prop="code" label="编号" width="120"/> <el-table-column prop="name" label="名称" min-width="180"/> <el-table-column prop="respPerson" label="责任人" width="120"/> <el-table-column prop="schedule" label="完成百分比" width="120"> <template slot-scope="{row}"> <el-progress :percentage="Number(row.schedule)" :show-text="row.schedule > 10" :stroke-width="18" :color="getProgressColor(row.schedule)" /> </template> </el-table-column> <el-table-column prop="planStartDate" label="计划开始日期" width="150"/> <el-table-column prop="planEndDate" label="计划结束日期" width="150"/> <!-- 新增甘特图列 --> <el-table-column label="时间线" min-width="300"> <template slot-scope="{row}"> <div class="gantt-cell" :ref="'gantt_'+row.uid" style="height: 50px;"></div> </template> </el-table-column> <!-- <el-table-column label="操作" width="100">--> <!-- <template slot-scope="scope">--> <!-- <el-button size="mini" icon="el-icon-view" @click.stop="handleUpdate(scope.row)">查看</el-button>--> <!-- </template>--> <!-- </el-table-column>--> </el-table> </div> <!-- <!– 右侧甘特图容器 –>--> <!-- <el-col v-if="showGantt" :span="12">--> <!-- <div ref="ganttContainer" class="gantt-container" style="width: 100%; height: 600px;"></div>--> <!-- </el-col>--> </el-row> <!-- 查看弹窗 --> <el-dialog :title="title" :visible.sync="open" width="850px" append-to-body> <el-form ref="form" :model="form" :rules="rules" label-width="100px" :disabled="disable"> <el-row> <el-col :span="12"> <el-form-item label="编号" prop="code"> <el-input v-model="form.code" placeholder="请输入编号"/> </el-form-item> </el-col> <el-col :span="12"> <el-form-item label="名称" prop="name"> <el-input v-model="form.name" placeholder="请输入名称"/> </el-form-item> </el-col> </el-row> <el-row> <el-col :span="24"> <el-form-item label="备注" prop="remarks"> <el-input v-model="form.remarks" type="textarea" placeholder="请输入备注" rows="3"/> </el-form-item> </el-col> </el-row> <div class="dialog-footer"> <el-button @click="cancel">取 消</el-button> </div> </el-form> </el-dialog> </div> </template> <script> import gantt from 'dhtmlx-gantt'; import 'dhtmlx-gantt/codebase/dhtmlxgantt.css'; import {getPlan, listPlan} from '@/api/dw/plan/planview'; export default { name: 'Planview', data() { return { expandedKeys: new Set(), // 存储所有展开节点的UID listData: [], total: 0, queryParams: { pageNum: 1, pageSize: 1000, // 树形结构不适合分页,增加单页大小 name: null, respPerson: null }, open: false, title: '', form: {}, rules: { name: [{required: true, message: '名称不能为空', trigger: 'blur'}], schedule: [ {required: true, message: '完成百分比不能为空', trigger: 'blur'}, {type: 'number', message: '输入内容不是有效的数字', trigger: 'blur'} ] }, disable: true, showGantt: true, // 控制甘特图显示 flatData: [], // 扁平化数据 ganttInitialized: false, // 甘特图初始化标志 currentSelectedTask: null, // 当前选中的任务ID ganttExpandState: new Map() // 存储甘特图的展开状态 }; }, mounted() { this.getList(); }, methods: { // 初始化单个任务的甘特图 initTaskGantt(row) { const container = this.$refs[`gantt_${row.uid}`]?.[0]; if (!container || container._ganttInitialized) return; // 创建独立的甘特图实例 const taskGantt = gantt.createGanttInstance(); taskGantt.config.show_chart = false; taskGantt.config.show_grid = false; taskGantt.config.scale_height = 0; taskGantt.config.readonly = true; // 配置时间轴 taskGantt.config.scales = [ {unit: "day", step: 1, format: "%j %D"} ]; // 设置时间范围 const start = new Date(row.planStartDate); const end = new Date(row.planEndDate); taskGantt.setWorkTime({start_date: start, end_date: end}); // 添加任务 taskGantt.parse({ data: [{ id: row.uid, text: row.name, start_date: row.planStartDate, end_date: row.planEndDate, progress: row.schedule / 100, duration: this.calculateDuration(row.planStartDate, row.planEndDate) }] }); // 初始化甘特图 taskGantt.init(container); container._ganttInstance = taskGantt; container._ganttInitialized = true; }, // 计算任务持续时间(天) calculateDuration(start, end) { const startDate = new Date(start); const endDate = new Date(end); return Math.ceil((endDate - startDate) / (1000 * 60 * 60 * 24)); }, // 获取进度条颜色 getProgressColor(percentage) { // if (percentage < 30) return '#F56C6C'; // if (percentage < 70) return '#E6A23C'; return '#67C23A'; }, // 初始化甘特图 initGantt() { if (!this.$refs.ganttContainer) return; try { // 清除之前的实例(如果存在) if (gantt.$container) { gantt.destructor(); } gantt.config.date_format = '%Y-%m-%d'; gantt.config.scale_unit = 'month'; gantt.config.step = 1; gantt.config.subscales = [ {unit: 'day', step: 1, date: '%j, %D'} ]; gantt.config.columns = [ {name: 'text', label: '任务名称', tree: true, width: 200}, {name: 'start_date', label: '开始时间', align: 'center', width: 100}, {name: 'end_date', label: '结束时间', align: 'center', width: 100}, {name: 'progress', label: '进度', align: 'center', width: 80, template: (task) => `${task.progress * 100}%`} ]; gantt.config.row_height = 30; gantt.config.grid_width = 500; gantt.templates.task_text = (start, end, task) => task.text; gantt.init(this.$refs.ganttContainer); // 绑定事件 gantt.attachEvent('onTaskSelected', (id) => { this.currentSelectedTask = id; this.scrollToTableRow(id); }); // 绑定展开/折叠事件 gantt.attachEvent('onAfterTaskOpen', (id) => { this.ganttExpandState.set(id, true); this.syncGanttExpandToTable(id, true); }); gantt.attachEvent('onAfterTaskClose', (id) => { this.ganttExpandState.set(id, false); this.syncGanttExpandToTable(id, false); }); this.ganttInitialized = true; console.log('甘特图初始化成功'); } catch (e) { console.error('甘特图初始化失败:', e); } }, // 将甘特图的展开状态同步到表格 syncGanttExpandToTable(taskId, expanded) { const row = this.flatData.find(item => item.uid === taskId); if (!row) return; // 更新展开状态 if (expanded) { this.expandedKeys.add(row.uid); } else { this.expandedKeys.delete(row.uid); } // 更新表格UI this.$nextTick(() => { const tableRow = this.$refs.table.$el.querySelector(`[data-id="${row.uid}"]`); if (tableRow) { const expandIcon = tableRow.querySelector('.el-table__expand-icon'); if (expandIcon) { const isExpanded = expandIcon.classList.contains('el-table__expand-icon--expanded'); if (isExpanded !== expanded) { this.$refs.table.toggleRowExpansion(row, expanded); } } } }); }, // 获取数据 async getList() { try { const res = await listPlan(this.queryParams); this.listData = this.handleTree(res.data, 'uid', 'parentUid'); this.$nextTick(() => { // 初始化所有可见行的甘特图 this.initVisibleGantts(); }); } catch (error) { console.error('获取数据失败:', error); } }, // 初始化所有可见行的甘特图 initVisibleGantts() { this.listData.forEach(item => { this.initTaskGantt(item); if (item.children) { item.children.forEach(child => this.initTaskGantt(child)); } }); }, // 更新甘特图数据 updateGantt() { if (!this.ganttInitialized) return; const tasks = this.getVisibleTasks(); console.log('更新甘特图任务数量:', tasks.length); try { // 保存当前甘特图的展开状态 this.saveGanttExpandState(); gantt.clearAll(); gantt.parse({data: tasks, links: []}); // 恢复甘特图的展开状态 this.restoreGanttExpandState(); this.adjustGanttView(tasks); } catch (e) { console.error('更新甘特图失败:', e); } }, // 保存甘特图的展开状态 saveGanttExpandState() { if (!this.flatData.length) return; // 遍历所有任务,保存展开状态 this.flatData.forEach(item => { if (gantt.isTaskExists(item.uid)) { this.ganttExpandState.set(item.uid, gantt.isTaskOpen(item.uid)); } }); }, // 恢复甘特图的展开状态 restoreGanttExpandState() { this.ganttExpandState.forEach((isOpen, taskId) => { if (gantt.isTaskExists(taskId)) { gantt.openTask(taskId, isOpen); } }); }, // 获取当前可见的任务(根据展开状态) getVisibleTasks() { const visibleTasks = []; const collectVisible = (nodes) => { nodes.forEach(node => { visibleTasks.push({ id: node.uid, text: node.name, start_date: node.planStartDate, duration: node.planDuration || 1, progress: (node.schedule || 0) / 100, parent: node.parentUid || 0, open: this.expandedKeys.has(node.uid) // 设置初始展开状态 }); // 如果节点是展开的,递归收集子节点 if (this.expandedKeys.has(node.uid) && node.children) { collectVisible(node.children); } }); }; collectVisible(this.listData); return visibleTasks; }, // 自动调整甘特图视图 adjustGanttView(tasks) { if (!tasks.length) return; // 计算时间范围 const dates = tasks .filter(t => t.start_date) .map(t => new Date(t.start_date)); if (!dates.length) return; const minDate = new Date(Math.min(...dates.map(d => d.getTime()))); const maxDate = new Date(Math.max(...dates.map(t => { const endDate = new Date(t.start_date); endDate.setDate(endDate.getDate() + (t.duration || 0)); return endDate.getTime(); }))); // 设置时间范围 gantt.setWorkTime({ start_date: minDate, end_date: maxDate }); // 根据时间跨度调整缩放级别 const timeDiffInDays = Math.ceil((maxDate - minDate) / (1000 * 60 * 60 * 24)); if (timeDiffInDays <= 7) { gantt.config.scale_unit = 'day'; gantt.config.step = 1; } else if (timeDiffInDays <= 31) { gantt.config.scale_unit = 'week'; gantt.config.step = 1; } else if (timeDiffInDays <= 365) { gantt.config.scale_unit = 'month'; gantt.config.step = 1; } else { gantt.config.scale_unit = 'year'; gantt.config.step = 1; } gantt.render(); }, // 处理树形结构 handleTree(data, idKey = 'uid', parentKey = 'parentUid') { const map = {}; const tree = []; // 创建映射 data.forEach(item => { map[item[idKey]] = {...item, children: []}; }); // 构建树 data.forEach(item => { const parentId = item[parentKey]; if (parentId && map[parentId]) { map[parentId].children.push(map[item[idKey]]); } else { tree.push(map[item[idKey]]); } }); return tree; }, // 行点击事件 handleRowClick(row) { this.$nextTick(() => { // 高亮当前行 this.$refs.table.setCurrentRow(row); // 在甘特图中选中对应任务 if (this.ganttInitialized) { gantt.selectTask(row.uid); gantt.showTask(row.uid); } }); }, // 滚动到表格行 scrollToTableRow(taskId) { const row = this.flatData.find(item => item.uid === taskId); if (!row) return; this.$nextTick(() => { // 确保所有父节点都展开 this.expandParents(row); // 高亮当前行 this.$refs.table.setCurrentRow(row); // 滚动到元素 const tableBody = this.$refs.table.$el.querySelector('.el-table__body-wrapper'); const rowEl = this.$refs.table.$el.querySelector(`[data-id="${row.uid}"]`); if (tableBody && rowEl) { const rowTop = rowEl.offsetTop; const tableHeight = tableBody.clientHeight; tableBody.scrollTop = rowTop - tableHeight / 2; } }); }, // 展开父节点 expandParents(row) { if (!row.parentUid) return; const parent = this.flatData.find(item => item.uid === row.parentUid); if (parent && !this.expandedKeys.has(parent.uid)) { this.expandedKeys.add(parent.uid); this.$refs.table.toggleRowExpansion(parent, true); this.expandParents(parent); } }, // 树展开/折叠更新甘特图 handleExpandChange(row, expanded) { if (expanded && row.children) { this.$nextTick(() => { row.children.forEach(child => this.initTaskGantt(child)); }); } }, // 递归折叠子节点 collapseChildren(node) { if (node.children && node.children.length) { node.children.forEach(child => { this.expandedKeys.delete(child.uid); this.$refs.table.toggleRowExpansion(child, false); this.collapseChildren(child); }); } }, // 切换甘特图显示 - 解决重新初始化问题 toggleGantt() { this.showGantt = !this.showGantt; if (this.showGantt) { this.$nextTick(() => { // 确保每次展开都重新初始化甘特图 this.ganttInitialized = false; this.initGantt(); this.updateGantt(); }); } }, // 获取数据详情 async handleUpdate(row) { try { const res = await getPlan(row.uid); this.form = res.data; this.open = true; this.title = '查看治理计划'; } catch (error) { console.error('获取详情失败:', error); } }, // 取消按钮 cancel() { this.open = false; }, // 重置查询 resetQuery() { this.queryParams = { pageNum: 1, pageSize: 1000, name: null, respPerson: null }; this.getList(); } } }; </script> <style scoped> .page-container { padding: 20px; background-color: #f5f7fa; } .search-wrapper { background-color: #fff; padding: 15px 20px; border-radius: 4px; box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1); margin-bottom: 20px; } .table-container { background-color: #fff; padding: 15px; border-radius: 4px; box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1); } .gantt-container { background-color: #fff; border-radius: 4px; box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1); padding: 5px; } .dialog-footer { text-align: right; margin-top: 20px; } .toggle-button { margin-bottom: 15px; } .el-table { width: 100%; } .el-table--border { border: 1px solid #ebeef5; } .el-table__row:hover { background-color: #f5f7fa !important; } .el-progress { margin-top: 8px; } .el-form-item { margin-bottom: 18px; } </style> 优化后的代码,甘特图时间线列没有数据是怎么回事
最新发布
07-24
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