store/display an image in mongodb using mongoose/express

storeImgInMongoWithMongoose.js

/**
 * Module dependencies
 */

var express = require('express');
var fs = require('fs');
var mongoose = require('mongoose');
var Schema = mongoose.Schema;

// img path
var imgPath = '/path/to/some/img.png';

// connect to mongo
mongoose.connect('localhost', 'testing_storeImg');

// example schema
var schema = new Schema({
    img: { data: Buffer, contentType: String }
});

// our model
var A = mongoose.model('A', schema);

mongoose.connection.on('open', function () {
  console.error('mongo is open');

  // empty the collection
  A.remove(function (err) {
    if (err) throw err;

    console.error('removed old docs');

    // store an img in binary in mongo
    var a = new A;
    a.img.data = fs.readFileSync(imgPath);
    a.img.contentType = 'image/png';
    a.save(function (err, a) {
      if (err) throw err;

      console.error('saved img to mongo');

      // start a demo server
      var server = express.createServer();
      server.get('/', function (req, res, next) {
        A.findById(a, function (err, doc) {
          if (err) return next(err);
          res.contentType(doc.img.contentType);
          res.send(doc.img.data);
        });
      });

      server.on('close', function () {
        console.error('dropping db');
        mongoose.connection.db.dropDatabase(function () {
          console.error('closing db connection');
          mongoose.connection.close();
        });
      });

      server.listen(3333, function (err) {
        var address = server.address();
        console.error('server listening on http://%s:%d', address.address, address.port);
        console.error('press CTRL+C to exit');
      });

      process.on('SIGINT', function () {
        server.close();
      });
    });
  });

});

works fine in localhost but fileread is not working in server
`events.js:160
throw er; // Unhandled 'error' event
^

Error: ENOENT: no such file or directory, open 'file:///Users/rda/Desktop/Appointment Booking.png'
at Error (native)
at Object.fs.openSync (fs.js:640:18)
at Object.fs.readFileSync (fs.js:508:33)`

Seems to me this is one of hardest back-end topics.

So the working example to store image to local directory @TarunKashyap18 provided has few things to be noted:

• to run the project: $ node app.js

• the localhost its listening to is localhost:8000 instead of localhost:3000 noted in the comment (possibly didnt change much from the blog by @kathar1223.

• to test the result: first open localhost:8000 to upload a random image; then open http://localhost:8000/images to check the _id of the stored image; to check the image: open http://localhost:8000/picture/(the _id you just checked)

---

A revised sample with detailed README could be found here

Thanks a ton. I was searching a way to store files in mongo db for days.

I can't thank you enough.

thanks for this, it really helped me

Is there a way to find the path of the file and upload the file from the computer system ? I am trying to use the above mentioned code for storing images without using some extra package like Multer/Formidable etc. The code works fine if a static path is being used, but I wanted to check if someone can help me here to find the path dynamically.

@mukulbawa .. I think you could find the path from Client side / browser

Thank you!

Is it possible to send all the images in the folder to the database?

How did we figure out "Adding a default Image path to Mongoose Schema."