How to get latest entries from MongoDB collection with Mongoose
I have a use case where I need to retrieve the latest public bookmarks public added on www.codever.dev. They are store in a mongo database, and I use Mongoose as ORM.
I want to have two possibilites to achieve this:
- specify the number of days to look back
- specify the timestamp since when to look forward
I think the code is self explanatory
/**
* Returns the bookmarks added recently.
*
* The since query parameter is a timestamp which specifies the date since we want to look forward to present time.
* If this parameter is present it has priority. If it is not present, we might specify the number of days to look back via
* the query parameter numberOfDays. If not present it defaults to 7 days, last week.
*
*/
router.get('/latest-entries', async (req, res) => {
try
{
if(req.query.since) {
const bookmarks = await Bookmark.find(
{
createdAt: { $gte: new Date(parseFloat(req.query.since,0)) }
}).sort({createdAt: 'desc'}).lean().exec();
res.send(bookmarks);
} else {
const numberOfDaysToLookBack = req.query.days ? req.query.days : 7;
const bookmarks = await Bookmark.find(
{
createdAt: { $gte: new Date((new Date().getTime() - (numberOfDaysToLookBack * 24 * 60 * 60 * 1000))) }
}).sort({createdAt: 'desc'}).lean().exec();
res.send(bookmarks);
}
}
catch (err)
{
return res.status(500).send(err);
}
});
