[英]Is there a way to convert createdAt from MongoDB in the format of "day ago" when passing multiple posts with multiple days in one object?
我目前正在構建一個 web 應用程序,該應用程序具有包含多個帖子的時間線,並希望為每個帖子添加“幾天前”格式的日期和時間信息。
對於單個帖子,使用“javascript-time-ago”package,我執行以下方法將 createdAT 字段從 MongoDB 轉換為:
[控制器js文件]
const TimeAgo = require('javascript-time-ago');
const en = require('javascript-time-ago/locale/en');
TimeAgo.addDefaultLocale(en)
const timeAgo = new TimeAgo('en-US')
module.exports.showPost = async (req, res,) => {
const post = await Post.findById(req.params.id).populate({
path: 'reviews',
populate: {
path: 'author'
}
}).populate('author');
if (!post) {
req.flash('error', 'Cannot find that post!');
return res.redirect('/posts');
}
const user = await User.findById(post.author);
const created = post.createdAt;
const createdAgo = timeAgo.format(created);
res.render('posts/show', { post, user, imgLocation, createdAgo });
}
[查看ejs文件]
<div class="card-footer text-muted">
posted: <%= createdAgo %>
</div>
當它只顯示一個帖子時,這很有效。
但是,對於時間線,我在一個 object 中傳遞了多天的多個帖子,並在 ejs 端將其提取如下:
[控制器js文件]
module.exports.index = async (req, res) => {
const posts = await Post.find({}).populate().populate('author');
const currentUser = await User.findById(req.user);
res.render('posts/index', { posts, currentUser, imgLocation })
}
[查看ejs文件]
<% for (let post of posts){%>
<div class="card mb-3">
<div class="row">
<div class="col-md-4">
<% if(post.images.length) { %>
<img class="img-fluid" alt="" src="<%= post.images[0].url %>">
<% } else { %>
<img class="img-fluid" alt=""
src="<%= imgLocation %>">
<% } %>
</div>
</div>
</div>
<% }%>
如上所示,當在一個 object 中傳遞多天的多個帖子時,有沒有辦法以“前一天”的格式從 MongoDB 轉換 createdAt?
經過一些額外的試驗和錯誤之后,我使用 map() 更新了我的代碼,如下所示。 不確定這是正確的方法,但似乎工作正常。
[控制器js文件]
const TimeAgo = require('javascript-time-ago');
const en = require('javascript-time-ago/locale/en');
TimeAgo.addDefaultLocale(en)
const timeAgo = new TimeAgo('en-US')
module.exports.index = async (req, res) => {
let posts = await Post.find({}).populate().populate('author');
const currentUser = await User.findById(req.user);
posts = posts.map(function(currentObject){
return {
_id: currentObject._id,
title: currentObject.title,
images: currentObject.images,
description: currentObject.description,
author: currentObject.author,
reviews: currentObject.reviews,
createdAt: timeAgo.format(currentObject.createdAt),
updatedAt: currentObject.updatedAt
}
})
res.render('posts/index', { posts, currentUser, imgLocation })
}
[查看ejs文件(添加)]
<p class="text-muted">
posted: <%= post.createdAt %>
</p>
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