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<!DOCTYPE html>
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<html>
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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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<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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</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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</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/zTree/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(', ') : '') +
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(isThirdLevel ? '<button onclick="prerequisiteUpdate(\'' + node.id + '\')">维护</button>' : '') + '</td>';
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html += '<td>' + (node.related || '') +
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(isThirdLevel ? '<button onclick="relatedUpdate(\'' + node.id + '\')">维护</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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function prerequisiteUpdate(nodeId) {
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const currentNodeId = nodeId; // Define the variable from function parameter
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const modal = document.createElement('div');
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modal.style.cssText = `
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position: fixed;
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top: 50%;
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left: 50%;
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transform: translate(-50%, -50%);
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background-color: rgba(255, 255, 255, 0.95); // 修改背景为不透明
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padding: 20px;
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border-radius: 5px;
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box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
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z-index: 1000;
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width: 500px;
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max-width: 90%;
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modal.style.width = '600px';
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modal.style.padding = '20px';
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modal.style.backgroundColor = 'white';
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modal.style.border = '1px solid #ccc';
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modal.style.borderRadius = '5px';
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modal.style.boxShadow = '0 0 10px rgba(0,0,0,0.2)';
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modal.style.zIndex = '1000';
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`;
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// 创建标题和关闭按钮
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const header = document.createElement('div');
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header.style.display = 'flex';
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header.style.justifyContent = 'space-between';
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header.style.alignItems = 'center';
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header.style.marginBottom = '15px';
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const title = document.createElement('h3');
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title.textContent = '选择先修知识';
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title.style.margin = '0';
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const closeBtn = document.createElement('button');
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closeBtn.innerHTML = '×';
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closeBtn.style.background = 'none';
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closeBtn.style.border = 'none';
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closeBtn.style.fontSize = '20px';
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closeBtn.style.cursor = 'pointer';
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closeBtn.onclick = function () {
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document.body.removeChild(modal);
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};
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header.appendChild(title);
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header.appendChild(closeBtn);
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// 创建多选下拉框
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// 替换select元素为checkbox列表
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const container = document.createElement('div');
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container.style.cssText = `
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max-height: 300px;
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overflow-y: auto;
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margin-bottom: 10px;
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`;
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// 为每个节点创建checkbox
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allNodes.forEach(node => {
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console.log('Node title:', typeof node.title, node.title); // 添加调试
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if (node.id !== currentNodeId && !node.isParent) {
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const div = document.createElement('div');
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const checkbox = document.createElement('input');
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checkbox.type = 'checkbox';
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checkbox.value = node.id;
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checkbox.id = `node_${node.id}`;
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const label = document.createElement('label');
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label.htmlFor = `node_${node.id}`;
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label.textContent = node.title; // 修改这里，直接显示节点title
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div.appendChild(checkbox);
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div.appendChild(label);
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container.appendChild(div);
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}
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});
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// Create confirm button before using it
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const confirmBtn = document.createElement('button');
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confirmBtn.textContent = '确定';
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confirmBtn.style.marginTop = '10px';
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confirmBtn.style.padding = '5px 15px';
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confirmBtn.style.backgroundColor = '#4CAF50';
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confirmBtn.style.color = 'white';
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confirmBtn.style.border = 'none';
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confirmBtn.style.borderRadius = '4px';
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confirmBtn.style.cursor = 'pointer';
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confirmBtn.onclick = function () {
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const currentNode = findNodeById(treeData, currentNodeId);
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if (!currentNode) {
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console.error('找不到当前节点:', currentNodeId);
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return;
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}
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const selectedNodes = [];
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const checkboxes = container.querySelectorAll('input[type="checkbox"]:checked');
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checkboxes.forEach(checkbox => {
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const node = findNodeById(treeData, checkbox.value);
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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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console.log(`当前操作的三级节点ID: ${currentNodeId}, 名称: ${currentNode.title}`);
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console.log('选中的先修知识:');
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selectedNodes.forEach(node => {
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if (node.parentTitle) {
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console.log(`ID: ${node.id}, 名称: 【${node.parentTitle}】${node.title}`);
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} else {
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console.log(`ID: ${node.id}, 名称: ${node.title}`);
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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-prerequisites', {
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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: currentNodeId,
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prerequisites: selectedNodes
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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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alert('保存成功');
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location.reload(); // 刷新页面
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} else {
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alert('保存失败: ' + data.message);
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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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alert('保存出错');
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});
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modal.remove();
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};
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// 添加到模态框
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modal.appendChild(header);
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modal.appendChild(container);
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modal.appendChild(confirmBtn);
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// 添加到页面
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document.body.appendChild(modal);
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}
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function relatedUpdate(nodeId) {
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// 同样修改relatedUpdate函数
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const node = findNodeById(treeData, nodeId);
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if (node) {
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alert(`相关知识 Node ID: ${node.id}\nNode Title: ${node.title}`);
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} else {
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console.error('Node not found:', nodeId);
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}
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}
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</script>
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</body>
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</html> |
