How to upload file and save it directly to MongoDB using GridFS - ruby

I have a Sinatra application hosted on heroku and I'm trying to enable file uploading. I know heroku doesn't allow saving to the file system so I'm trying to save the image to MongoDB using GridFS directly. But I don’t know how.
Using the code below, I'm able to save to file system
base_dir = Dir.pwd + "/static/images/channels/"
File.open("#{base_dir}" + params['logo'][:filename], "w") do |f|
f.write(params['logo'][:tempfile].read)
end
How do I save the file directly to MongoDB without first saving it to the file system?


You can use the GridFS API to basically do what you're doing above, but write to MongoDB: http://api.mongodb.org/ruby/current/Mongo/GridFileSystem.html#open-instance_method.


I think you need to upload the file as binary data to a database.
You can use PaperClip to upload files and then store them as binary to MangoDB.
here this link might help you out:


If your files are actually less than 16 mb, please try using this Converter that changes the image of format jpeg / png to a format of saving to mongodb, and you can see this as an easy alternative for gridfs ,
please follow this github repo for more details
https://github.com/saran-surya/Mongo-Image-Converter

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