CODEWITHSUNDEEP
mongoose
Jorre
Jorre

Reputation: 17581

How to query mongodb with mongoose + adding created date in results

I want to add the creation date to results returned by mongoose. I know the _id property of a mongodb record has the creation date embedded in it, but I'm not sure how to add it to the result set so that I can use it in my client side application.

Any ideas on how to add that property dynamically to the results set?

Upvotes: 2

Views: 1180

Answers (3)

MBehtemam
MBehtemam

Reputation: 7919

Mongoose can do it for you automatically. according to timestamp option in Mongoose just do something like this : 

var nSchema=new Schema({
   name:String,
   ...
    timestamps: { createdAt: 'created_at' },
   ...
});

also you can track for update with updateAt

Upvotes: 1

SUNDARRAJAN K
SUNDARRAJAN K

Reputation: 2295

I prefer the second way of ma08.Add a created field and use the default value to Date.now.This method automatically creates the current date as the created date.

var nSchema=new Schema({
name:String,
...
created: {type:Date, default:Date.now},
...

});

Upvotes: 0

ma08
ma08

Reputation: 3734

If you are willing to use _id's timestamp as the date created

var fooSchema = new Schema({
      name: String,
      ... 
},
{
  toObject: { virtuals: true },
  toJSON: { virtuals: true }
}
)


fooSchema.virtual('created')
  .get(function(){ 
     return this._id.getTimestamp();
  });

You can access the field created to get the timestamp. The toObject(doc) and toJson(doc) options are used to keep our virtual field(created) when converting from a mongoose document. Using toJson might suffice I guess, depends on your usage.

If you are not willing to use _id's timestamp(there are many arguments that it is not advisable when operating across multiple instances), you can put it in a separate field like

var fooSchema = new Schema({
      name: String,
      created:  {type: Date, default: Date.now},
});

This will set created to the timestamp the object is first saved.

Upvotes: 2

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