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MongoDB's ObjectId has a getTimestamp() method that returns time when the record was inserted. Is there a similar method for getting time of last update or should I use a separate column to save this data?
Using PHP (if it matters).
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How can we update a record in MongoDB? To update a record, you need to update on the basis of _id. Let us create a collection with documents − Display all documents from a collection with the help of find () method −
The updateMany () method returns a document that contains multiple fields. The following are the notable ones: The matchedCount stores the number of matched documents. The modifiedCount stores the number of modified documents. To form the update argument, you typically use the $set operator.
The filter is a document that specifies the condition to select the document for update. If you pass an empty document ( {}) into the method, it’ll update all the documents the collection. The update is a document that specifies the updates to apply. The options argument provides some options for updates that won’t be covered in this tutorial.
On the server running MongoDB, type mongo to open up a connection to the database: Once you see the > symbol, you’re ready to create your first database and start adding records.
MongoDB doesn't store the last update so that's something you'll have to store yourself through your application in a separate field.
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