Random document from a collection in Mongoose

by

I found this Mongoose Schema static function in a GitHub Gist, which should achieve what you are after. It counts number of documents in the collection and then returns one document after skipping a random amount.

QuoteSchema.statics.random = function(callback) {
  this.count(function(err, count) {
    if (err) {
      return callback(err);
    }
    var rand = Math.floor(Math.random() * count);
    this.findOne().skip(rand).exec(callback);
  }.bind(this));
};

Source: https://gist.github.com/3453567

NB I modified the code a bit to make it more readable.

More Related Contents:

  1. Mongoose and multiple database in single node.js project
  2. MongoDB, remove object from array
  3. Simplest way to wait some asynchronous tasks complete, in Javascript?
  4. Mongoose find/update subdocument
  5. Mongoose, Select a specific field with find
  6. How to sort in mongoose?
  7. Mongoose difference between .save() and using update()
  8. Mongoose the Typescript way…?
  9. Bulk upsert in MongoDB using mongoose
  10. mongoose .find() method returns object with unwanted properties
  11. Mongoose subdocuments vs nested schema
  12. Why is an _id with ObjectID added to when using MongoDB’s $push to add new object to an array?
  13. Why is my function returning Promise { } [duplicate]
  14. How to set _id to db document in Mongoose?
  15. What is a TransientTransactionError in Mongoose (or MongoDB)?
  16. Mongoose.js: Find user by username LIKE value
  17. How to solve Mongoose v5.11.0 model.find() error: Operation `products.find()` buffering timed out after 10000ms”
  18. Mongoose Not Creating Indexes
  19. is there a mongoose connect error callback
  20. Why can’t I delete a mongoose model’s object properties?
  21. Trying to hash a password using bcrypt inside an async function
  22. MissingSchemaError: Schema hasn’t been registered for model “User”
  23. Node.js mongodb driver async/await queries
  24. Mongoose schema within schema
  25. Object.keys() returns unexpected keys on MongoDB object from collection [duplicate]
  26. What is the difference between id and _id in mongoose?
  27. JavaScript NoSQL Injection prevention in MongoDB
  28. Group by Date with Local Time Zone in MongoDB
  29. MongooseError: Model.findOne() no longer accepts a callback at Function
  30. Mongoose find() not returning result

Leave a Comment