nodejs display image stored in gridFS to html

Question

Hi I\'m new to nodejs and gridFS I\'m trying to display images stored in gridFS to my html page

Currently, I am using this code.

gfs.exist(options, f         


        

Answer 1

         var pi_id   =  fields.pic_id;

         gfs.findOne({ _id: pi_id }, function (err, file) {
                    console.log(file);
                    if (err) return res.status(400).send(err);
                    if (!file) return res.status(404).send('');

                    res.set('Content-Type', file.contentType);
                    res.set('Content-Disposition', 'attachment; filename="' + file.filename + '"');

                    var readstream = gfs.createReadStream({
                      _id: file._id
                    });

                    readstream.on("error", function(err) {
                      console.log("Got error while processing stream " + err.message);
                      res.end();
                    });

                    readstream.pipe(res);

                    console.log(readstream.pipe(res))
                  });