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<!DOCTYPE html>
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<html lang="zh">
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<head>
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<meta charset="UTF-8">
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<title>知识点树形展示</title>
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<!-- 添加LayUI CSS和JS -->
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<link rel="stylesheet" href="/static/layui/css/layui.css">
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<script src="/static/layui/layui.js"></script>
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<style>
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body {
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margin: 0;
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padding: 0;
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font-family: Microsoft YaHei;
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}
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#treeTable {
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width: 100%;
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border-collapse: collapse;
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}
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#treeTable th, #treeTable td {
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padding: 8px;
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border: 1px solid #ddd;
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}
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#treeTable th {
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background: #f5f5f5;
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}
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.level-0 td:first-child {
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padding-left: 10px;
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}
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.level-1 td:first-child {
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padding-left: 30px;
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}
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.level-2 td:first-child {
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padding-left: 50px;
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}
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.level-3 td:first-child {
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padding-left: 70px;
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}
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.toggle-icon {
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cursor: pointer;
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margin-right: 5px;
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}
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#treeTable th:nth-child(2), #treeTable td:nth-child(2),
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#treeTable th:nth-child(3), #treeTable td:nth-child(3),
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#treeTable th:nth-child(4), #treeTable td:nth-child(4) {
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width: 220px;
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min-width: 220px;
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max-width: 220px;
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text-align: center;
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border-right: 1px solid #ddd; /* 确保右侧边框闭合 */
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}
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#treeTable td:nth-child(4) {
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display: flex;
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justify-content: center;
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gap: 5px;
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min-height: 36px; /* 确保空单元格也有高度 */
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}
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</style>
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</head>
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<body>
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<table id="treeTable">
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<thead>
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<tr>
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<th>知识点</th>
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<th>先修知识</th>
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<th>相关知识</th>
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<th>维护</th>
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</tr>
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</thead>
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<tbody id="treeBody"></tbody>
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</table>
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<script src="/static/js/jquery-1.4.4.min.js"></script>
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<script>
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var treeData = [];
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function toggleNode(nodeId) {
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console.log('toggleNode', nodeId);
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var node = findNodeById(treeData, nodeId);
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if (node) {
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node.open = !node.open;
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// 强制重新渲染整个表格
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updateTable();
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}
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}
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function findParentTitle(node) {
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if (!node || !node.parent_id) return '';
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const parent = allNodes.find(n => n.id === node.parent_id);
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return parent ? parent.title : '';
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}
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function findNodeById(nodes, id) {
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for (const node of nodes) {
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if (node.id === id) return node;
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if (node.children) {
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const found = findNodeById(node.children, id);
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if (found) return found;
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}
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}
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return null;
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}
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function updateTable() {
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var html = '';
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function buildRows(nodes, level) {
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level = level || 0;
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for (var i = 0; i < nodes.length; i++) {
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var node = nodes[i];
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html += '<tr class="level-' + level + '">';
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html += '<td style="padding-left:' + (level * 20) + 'px">';
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if (node.children && node.children.length > 0) {
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html += '<span class="toggle-icon" onclick="toggleNode(\'' + node.id + '\')">' +
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(node.open ? '▼' : '▶') + '</span>';
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} else {
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html += '<span style="display:inline-block; width:16px;"></span>';
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}
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html += node.title + '</td>';
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// 修改后的维护按钮显示逻辑
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const isThirdLevel = node.parent_id && allNodes.find(n => n.id === node.parent_id)?.parent_id;
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html += '<td>' + (node.prerequisite && node.prerequisite.length > 0 ?
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node.prerequisite.map(p => p.title).join(', ') : '') + '</td>';
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html += '<td>' + (node.related && node.related.length > 0 ?
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node.related.map(r => r.title).join(', ') : '') + '</td>';
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html += '<td>' + (isThirdLevel ?
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'<button class="layui-btn layui-btn-sm" onclick="prerequisiteUpdate(\'' + node.id + '\')">先修知识</button> ' +
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'<button class="layui-btn layui-btn-sm layui-btn-normal" onclick="relatedUpdate(\'' + node.id + '\')">相关知识</button>' : '') + '</td>';
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html += '</tr>';
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if (node.open && node.children && node.children.length > 0) {
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buildRows(node.children, level + 1);
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}
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}
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}
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buildRows(treeData);
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$("#treeBody").html(html);
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}
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// 初始化数据
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// Move this declaration outside the AJAX call
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var allNodes = [];
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// Add flattenTree function definition before the AJAX call
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function flattenTree(nodes) {
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var result = [];
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nodes.forEach(node => {
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result.push(node);
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if (node.children) {
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result = result.concat(flattenTree(node.children));
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}
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});
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return result;
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}
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$.ajax({
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url: "/api/tree-data",
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type: "GET",
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success: function (res) {
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if (res.code === 0) {
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treeData = res.data;
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allNodes = flattenTree(treeData);
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updateTable();
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}
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}
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});
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// 修改prerequisiteUpdate和relatedUpdate函数
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// 公共函数
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function showKnowledgeSelector(nodeId, title, currentKnowledge, updateType) {
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layui.use(['layer', 'form'], function () {
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var layer = layui.layer;
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var form = layui.form;
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// 构建HTML内容
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let html = '<div style="padding: 20px;">';
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html += '<form class="layui-form">';
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allNodes.forEach(node => {
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if (node.id !== nodeId && !node.isParent) {
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const isSelected = currentKnowledge &&
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currentKnowledge.some(p => p.id === node.id);
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const parentTitle = findParentTitle(node);
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const displayTitle = parentTitle ? `【${parentTitle}】${node.title}` : node.title;
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html += '<div class="layui-form-item">';
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html += '<input type="checkbox" name="node" value="' + node.id + '" title="' + displayTitle + '"' + (isSelected ? ' checked' : '') + '>';
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html += '</div>';
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}
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});
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html += '</form>';
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html += '</div>';
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// 弹出层
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layer.open({
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type: 1,
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title: '选择' + title,
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content: html,
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area: ['500px', '400px'],
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btn: ['确定', '取消'],
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yes: function (index, layero) {
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const selectedNodes = [];
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$('input[name="node"]:checked').each(function () {
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const node = findNodeById(treeData, $(this).val());
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if (node) {
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selectedNodes.push({
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id: node.id,
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title: node.title
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});
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}
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});
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// 调用后端接口
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fetch('/api/update-knowledge', {
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method: 'POST',
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headers: {
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'Content-Type': 'application/json',
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},
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body: JSON.stringify({
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node_id: nodeId,
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knowledge: selectedNodes,
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update_type: updateType
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})
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})
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.then(response => response.json())
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.then(data => {
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if (data.code === 0) {
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layer.msg('保存成功', {icon: 1});
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setTimeout(() => location.reload(), 1000);
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} else {
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layer.msg('保存失败: ' + data.message, {icon: 2});
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}
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})
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.catch(error => {
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console.error('Error:', error);
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layer.msg('保存出错', {icon: 2});
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});
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layer.close(index);
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}
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});
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form.render();
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});
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}
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// 修改后的prerequisiteUpdate函数
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function prerequisiteUpdate(nodeId) {
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const currentNode = findNodeById(treeData, nodeId);
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showKnowledgeSelector(nodeId, '先修知识', currentNode.prerequisite, 'prerequisite');
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}
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// 修改后的relatedUpdate函数
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function relatedUpdate(nodeId) {
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const currentNode = findNodeById(treeData, nodeId);
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showKnowledgeSelector(nodeId, '相关知识', currentNode.related, 'related');
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}
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</script>
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</body>
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</html>
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