有没有办法立即显示最新的回复?目前,我使用这段代码:
api.onPageChange(() => {
if (window.location.pathname === "/") {
const container = document.querySelector(".latest-topic-list");
if (!container || container.dataset.modified === "true") return;
fetch("/posts.json?order=created")
.then(res => res.json())
.then(data => {
const replies = data.latest_posts
.filter(p => p.post_number > 1 && !p.topic_slug.includes("private-message"))
.slice(0, 15);
const topicFetches = replies.map(post =>
fetch(`/t/${post.topic_id}.json`)
.then(res => res.json())
.then(topic => {
return {
post,
category: topic.category_id ? topic.category_name : null,
tags: topic.tags || []
};
})
);
Promise.all(topicFetches).then(results => {
const rows = results.map(({ post, category, tags }) => {
const url = `/t/${post.topic_slug}/${post.topic_id}/${post.post_number}`;
const avatarUrl = post.avatar_template.replace("{size}", "45");
const excerpt = post.excerpt?.replace(/<\/?[^\s>]+(\>|$)/g, "")?.slice(0, 120) + (post.excerpt?.length > 120 ? '...' : '') || '';
const categoryHtml = category
? `<span style="font-size: 0.85em; color: #666;">Categoria: <strong>${category}</strong></span><br>`
: '';
const tagsHtml = tags.length
? `<span style="font-size: 0.85em; color: #666;">Tags: ${tags.map(tag => `<span style="background:#eee; padding:2px 6px; border-radius:3px; margin-right:4px;">${tag}</span>`).join("")}</span>`
: '';
return `
<tr class="topic-list-item">
<td class="main-link clearfix">
<div style="display: flex; align-items: center; gap: 16px; padding: 8px 0;">
<div style="flex-shrink: 0;">
<a class="avatar-link" href="/u/${post.username}">
<img loading="lazy" width="45" height="45" src="${avatarUrl}" class="avatar" alt="${post.username}">
</a>
</div>
<div style="display: flex; flex-direction: column; justify-content: center; padding-top: 8px; padding-bottom: 8px;">
<span class="link-top-line" style="margin-bottom: 6px;">
<a href="${url}" class="title raw-link">${excerpt}</a>
</span>
<div class="link-bottom-line">
${categoryHtml}
${tagsHtml}
</div>
</div>
</div>
</td>
</tr>
`;
}).join("");
// Cria o container da seção de últimos comentários
const latestRepliesContainer = document.createElement("div");
latestRepliesContainer.className = "latest-replies-container";
latestRepliesContainer.style.marginTop = "2em";
latestRepliesContainer.innerHTML = `
<table class="topic-list latest-topic-list">
<thead>
<tr>
<th class="default">Últimos Comentários</th>
</tr>
</thead>
<tbody>
${rows}
</tbody>
</table>
`;
container.parentNode.insertBefore(latestRepliesContainer, container.nextSibling);
container.dataset.modified = "true";
});
})
.catch(error => {
console.error("Erro ao buscar últimos comentários:", error);
});
}
});
/script```
但内容平均需要 2 秒钟才会出现。带有“最新评论”的右侧边栏块也是如此。这正常吗?
[引述=“David_Ghost, post:1, topic:365041”]
目前,我使用这段代码
[/引述]
你为什么要添加任何代码?
它可以开箱即用,没有任何特殊情况;对你来说是不是坏了?
这就是他的问题。
我认为这是可以预期的,因为代码进行了多次 API 请求。
它检索最新的帖子,然后为每个主题 ID(此处为 15 个)发出一个请求以检索类别名称。
目前,我不知道除了使用插件和进行自定义 SQL 查询之外,还有没有其他方法。
完全正确。
但是右侧边栏区块也会发出请求吗?它给我的最近回复结果一样。需要 2 秒才能出现。
我将看看如何制作一个插件。谢谢。
是的,它在检索最新的帖子方面做得一样,但仅此而已。它不会尝试获取类别名称,这就是区别。
最后,我目前使用的是这个:
<script type="text/discourse-plugin" version="0.11.3">
api.onPageChange(() => {
if (window.location.pathname === "/") {
const container = document.querySelector(".latest-topic-list");
if (!container) return;
// 避免多次初始化
if (window.latestRepliesInitialized) return;
window.latestRepliesInitialized = true;
// 配置
const POLLING_INTERVAL = 2000; // 2 秒
const COMMENTS_TO_SHOW = 15;
const CACHE_DURATION = 30 * 60 * 1000; // 30 分钟
// 缓存键
const CACHE_KEY = "discourse_latest_replies_data";
const CACHE_TIMESTAMP_KEY = "discourse_latest_replies_timestamp";
const CACHE_LAST_ID_KEY = "discourse_latest_replies_last_id";
// 存储最后看到的帖子 ID 以进行比较
let lastSeenPostId = parseInt(localStorage.getItem(CACHE_LAST_ID_KEY) || "0");
let pollingIntervalId = null;
console.log(`正在初始化最新评论插件(缓存中的最后 ID:${lastSeenPostId})`);
// 加载评论的函数
function loadLatestReplies(silent = false, forceRefresh = false) {
// 如果不是强制刷新,先检查缓存
if (!forceRefresh) {
const cachedData = localStorage.getItem(CACHE_KEY);
const cacheTimestamp = localStorage.getItem(CACHE_TIMESTAMP_KEY);
const now = Date.now();
// 如果我们有有效的缓存数据
if (cachedData && cacheTimestamp && now - parseInt(cacheTimestamp) < CACHE_DURATION) {
try {
const results = JSON.parse(cachedData);
console.log(`使用缓存数据(${results.length} 条评论,缓存于 ${Math.round((now - parseInt(cacheTimestamp)) / 1000 / 60)} 分钟前)`);
renderLatestReplies(results, false);
// 如果不是静默模式,无需执行其他操作
if (!silent) {
return;
}
// 如果是静默模式,继续检查更新
} catch (e) {
console.error("处理缓存时出错:", e);
// 如果缓存出错,继续获取新鲜数据
}
} else if (cachedData) {
console.log("缓存已过期,获取新鲜数据");
} else {
console.log("未找到缓存,获取新鲜数据");
}
} else {
console.log("强制刷新,忽略缓存");
}
// 如果不是静默模式,显示加载指示器
if (!silent) {
// 如果已存在评论容器,则不显示指示器
const existingContainer = document.querySelector(".latest-replies-container");
if (!existingContainer) {
let loadingIndicator = document.getElementById("latest-replies-loading");
if (!loadingIndicator) {
loadingIndicator = document.createElement("div");
loadingIndicator.id = "latest-replies-loading";
loadingIndicator.innerHTML = `
<div style="text-align: center; padding: 20px;">
<span class="spinner small"></span>
<span style="margin-left: 10px;">正在加载最新评论...</span>
</div>
`;
container.parentNode.insertBefore(loadingIndicator, container.nextSibling);
}
}
}
// 获取最新数据
fetch("/posts.json?order=created")
.then(res => res.json())
.then(data => {
// 诊断日志
if (!silent) {
console.log("从 API 接收到的数据:", data.latest_posts.length);
}
const replies = data.latest_posts
.filter(p => p.post_number > 1 && !p.topic_slug.includes("private-message"))
.slice(0, COMMENTS_TO_SHOW);
// 检查是否有新帖子
const maxId = replies.length > 0 ? Math.max(...replies.map(post => post.id)) : 0;
const hasNewPosts = maxId > lastSeenPostId;
// 诊断日志
if (hasNewPosts && !silent) {
console.log(`检测到新帖子。最后 ID: ${lastSeenPostId}, 新最大 ID: ${maxId}`);
}
// 更新最后看到的 ID
if (maxId > lastSeenPostId) {
lastSeenPostId = maxId;
localStorage.setItem(CACHE_LAST_ID_KEY, lastSeenPostId.toString());
}
// 如果没有新帖子且是静默检查,且不强制刷新,则不执行任何操作
if (!hasNewPosts && silent && !forceRefresh) {
return;
}
// 获取主题详情
const topicPromises = replies.map(post => {
// 检查是否有缓存的主题
const topicCacheKey = `discourse_topic_${post.topic_id}`;
const cachedTopic = localStorage.getItem(topicCacheKey);
if (cachedTopic && !forceRefresh) {
try {
return Promise.resolve(JSON.parse(cachedTopic));
} catch (e) {
console.error(`处理主题 ${post.topic_id} 的缓存时出错:`, e);
// 如果缓存出错,从服务器获取
}
}
return fetch(`/t/${post.topic_id}.json`)
.then(res => res.json())
.then(topic => {
// 将主题存入缓存
localStorage.setItem(topicCacheKey, JSON.stringify(topic));
return topic;
})
.catch(error => {
console.error(`获取主题 ${post.topic_id} 时出错:`, error);
return { category_id: null, category_name: null, tags: [] };
});
});
Promise.all(topicPromises)
.then(topics => {
const results = replies.map((post, index) => {
const topic = topics[index];
return {
post,
category: topic.category_id ? topic.category_name : null,
tags: topic.tags || []
};
});
// 将结果存入缓存
localStorage.setItem(CACHE_KEY, JSON.stringify(results));
localStorage.setItem(CACHE_TIMESTAMP_KEY, Date.now().toString());
// 渲染结果
renderLatestReplies(results, hasNewPosts || forceRefresh);
})
.catch(error => {
console.error("处理主题时出错:", error);
});
})
.catch(error => {
console.error("获取最新评论时出错:", error);
// 如果出错,移除加载指示器
if (!silent) {
const loadingElement = document.getElementById("latest-replies-loading");
if (loadingElement) loadingElement.remove();
}
});
}
// 渲染结果的函数
function renderLatestReplies(results, animate = false) {
// 移除加载指示器
const loadingElement = document.getElementById("latest-replies-loading");
if (loadingElement) loadingElement.remove();
// 如果没有结果,不执行任何操作
if (!results || results.length === 0) {
console.log("未找到要显示的评论");
return;
}
const rows = results.map(({ post, category, tags }) => {
const url = `/t/${post.topic_slug}/${post.topic_id}/${post.post_number}`;
const avatarUrl = post.avatar_template.replace("{size}", "45");
const excerpt = post.excerpt?.replace(/</?[^>]+(>|$)/g, "")?.slice(0, 120) + (post.excerpt?.length > 120 ? '...' : '') || '';
const categoryHtml = category
? `<span style="font-size: 0.85em; color: #666;">分类:<strong>${category}</strong></span><br>`
: '';
const tagsHtml = tags.length
? `<span style="font-size: 0.85em; color: #666;">标签: ${tags.map(tag => `<span style="background:#eee; padding:2px 6px; border-radius:3px; margin-right:4px;">${tag}</span>`).join("")}</span>`
: '';
const animationClass = animate ? 'new-comment' : '';
return `
<tr class="topic-list-item ${animationClass}" data-post-id="${post.id}">
<td class="main-link clearfix">
<div style="display: flex; align-items: center; gap: 16px; padding: 8px 0;">
<div style="flex-shrink: 0;">
<a class="avatar-link" href="/u/${post.username}">
<img loading="lazy" width="45" height="45" src="${avatarUrl}" class="avatar" alt="${post.username}">
</a>
</div>
<div style="display: flex; flex-direction: column; justify-content: center; padding-top: 8px; padding-bottom: 8px;">
<span class="link-top-line" style="margin-bottom: 6px;">
<a href="${url}" class="title raw-link">${excerpt}</a>
</span>
<div class="link-bottom-line">
${categoryHtml}
${tagsHtml}
</div>
</div>
</div>
</td>
</tr>
`;
}).join("");
// 如果尚未添加,则添加动画样式
if (!document.getElementById('latest-replies-style')) {
const style = document.createElement('style');
style.id = 'latest-replies-style';
style.textContent = `
@keyframes highlightNew {
0% { background-color: rgba(255, 255, 0, 0.3); }
100% { background-color: transparent; }
}
.new-comment {
animation: highlightNew 2s ease-out;
}
`;
document.head.appendChild(style);
}
// 如果存在,移除现有容器
const existingContainer = document.querySelector(".latest-replies-container");
if (existingContainer) {
existingContainer.remove();
}
// 创建最新评论部分的容器
const latestRepliesContainer = document.createElement("div");
latestRepliesContainer.className = "latest-replies-container";
latestRepliesContainer.style.marginTop = "2em";
// 添加手动刷新按钮和状态指示器
const cacheTime = new Date(parseInt(localStorage.getItem(CACHE_TIMESTAMP_KEY) || Date.now()));
const formattedTime = cacheTime.toLocaleTimeString();
latestRepliesContainer.innerHTML = `
<table class="topic-list latest-topic-list">
<thead>
<tr>
<th class="default">
最新评论
<span id="comments-status" style="font-size: 0.8em; font-weight: normal; margin-left: 10px;">
</span>
<button id="refresh-comments" class="btn btn-flat no-text btn-icon" style="float: right;" title="刷新评论">
<svg class="fa d-icon d-icon-sync svg-icon svg-string" width="16" height="16" aria-hidden="true"><use xlink:href="#sync"></use></svg>
</button>
</th>
</tr>
</thead>
<tbody id="latest-replies-tbody">
${rows}
</tbody>
</table>
`;
container.parentNode.insertBefore(latestRepliesContainer, container.nextSibling);
container.dataset.modified = "true";
// 为刷新按钮添加点击事件
document.getElementById("refresh-comments").addEventListener("click", function() {
// 更新状态文本
const statusElement = document.getElementById("comments-status");
if (statusElement) {
statusElement.textContent = "(正在更新...)";
}
// 强制刷新
loadLatestReplies(false, true);
});
console.log(`已渲染 ${results.length} 条评论`);
}
// 启动初始加载(使用缓存)
loadLatestReplies(false, false);
// 配置高频轮询
pollingIntervalId = setInterval(() => {
// 仅当用户在主页时更新
if (window.location.pathname === "/") {
loadLatestReplies(true, false); // 静默模式,如有缓存则使用
}
}, POLLING_INTERVAL);
console.log(`轮询已设置为每 ${POLLING_INTERVAL}ms 执行一次`);
// 当用户离开页面时清除间隔
api.onPageChange((url) => {
if (url !== "/") {
console.log("正在离开主页,清理资源");
if (pollingIntervalId) {
clearInterval(pollingIntervalId);
pollingIntervalId = null;
}
window.latestRepliesInitialized = false;
}
});
}
});
</script>
它按预期工作。它会自动添加新评论,然后将其加入缓存。我知道这不是最理想的方案。我很快就会尝试开发一个插件。
这里的目标是:与其使用具有“最新主题”页面样式的分类,我更希望有一个具有“最新回复”样式的分类。