How can you remove all documents from a collection with Mongoose?

Question

I know how to...

• Remove a single document.
• Remove the collection itself.
• Remove all documents from the collection with Mongo.

But I don't know how to remove all documents from the collection with Mongoose. I want to do this when the user clicks a button. I assume that I need to send an AJAX request to some endpoint and have the endpoint do the removal, but I don't know how to handle the removal at the endpoint.

In my example, I have a Datetime collection, and I want to remove all of the documents when the user clicks a button.

api/datetime/index.js

'use strict';  var express = require('express'); var controller = require('./datetime.controller');  var router = express.Router();  router.get('/', controller.index); router.get('/:id', controller.show); router.post('/', controller.create); router.put('/:id', controller.update); router.patch('/:id', controller.update); router.delete('/:id', controller.destroy);  module.exports = router; 

api/datetime/datetime.controller.js

'use strict';  var _ = require('lodash'); var Datetime = require('./datetime.model');  // Get list of datetimes exports.index = function(req, res) {   Datetime.find(function (err, datetimes) {     if(err) { return handleError(res, err); }     return res.json(200, datetimes);   }); };  // Get a single datetime exports.show = function(req, res) {   Datetime.findById(req.params.id, function (err, datetime) {     if(err) { return handleError(res, err); }     if(!datetime) { return res.send(404); }     return res.json(datetime);   }); };  // Creates a new datetime in the DB. exports.create = function(req, res) {   Datetime.create(req.body, function(err, datetime) {     if(err) { return handleError(res, err); }     return res.json(201, datetime);   }); };  // Updates an existing datetime in the DB. exports.update = function(req, res) {   if(req.body._id) { delete req.body._id; }   Datetime.findById(req.params.id, function (err, datetime) {     if (err) { return handleError(res, err); }     if(!datetime) { return res.send(404); }     var updated = _.merge(datetime, req.body);     updated.save(function (err) {       if (err) { return handleError(res, err); }       return res.json(200, datetime);     });   }); };  // Deletes a datetime from the DB. exports.destroy = function(req, res) {   Datetime.findById(req.params.id, function (err, datetime) {     if(err) { return handleError(res, err); }     if(!datetime) { return res.send(404); }     datetime.remove(function(err) {       if(err) { return handleError(res, err); }       return res.send(204);     });   }); };  function handleError(res, err) {   return res.send(500, err); } 

Answer 1

DateTime.remove({}, callback) The empty object will match all of them.