I'm using Mongoose, MongoDB, and Node.
I would like to define a schema where one of its fields is a date\timestamp.
I would like to use this field in order to return all of the records that have been updated in the last 5 minutes.
Due to the fact that in Mongoose I can't use the Timestamp() method I understand that my only option is to use the following Javascript method:
time : { type: Number, default: (new Date()).getTime() }
It's probably not the most efficient way for querying a humongous DB. I would really appreciate it if someone could share a more efficient way of implementing this.
Is there any way to implement this with Mongoose and be able to use a MongoDB timestamp?
Mongoose schemas support a timestamps option. If you set timestamps: true , Mongoose will add two properties of type Date to your schema: createdAt : a date representing when this document was created. updatedAt : a date representing when this document was last updated.
What is a SchemaType? You can think of a Mongoose schema as the configuration object for a Mongoose model. A SchemaType is then a configuration object for an individual property. A SchemaType says what type a given path should have, whether it has any getters/setters, and what values are valid for that path.
MongoDB stores dates as 64-bit integers, which means that Mongoose does not store timezone information by default. When you call Date#toString() , the JavaScript runtime will use your OS' timezone.
Working of the timestamp in mongodb is simple, where when executed, the timestamp method will call the currentDate(), which will pick the current date and time of the system. This picked date and time will be stored in the collection, along with the other data values.
Edit - 20 March 2016
Mongoose now support timestamps for collections.
Please consider the answer of @bobbyz below. Maybe this is what you are looking for.
Mongoose supports a Date
type (which is basically a timestamp):
time : { type : Date, default: Date.now }
With the above field definition, any time you save a document with an unset time
field, Mongoose will fill in this field with the current time.
Source: http://mongoosejs.com/docs/guide.html
The current version of Mongoose (v4.x) has time stamping as a built-in option to a schema:
var mySchema = new mongoose.Schema( {name: String}, {timestamps: true} );
This option adds createdAt
and updatedAt
properties that are timestamped with a Date
, and which does all the work for you. Any time you update the document, it updates the updatedAt
property. Schema Timestamps Docs.
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