I have an application that uses the Paperclip plugin for image upload. Now that app should get deployed to an host(heroku) which has a read-only file system. Can I somehow tell paperclip to store the images in the database?
Check out this sample app
I guess this is exactly what you need.
HTH
PS: storing images in db is usually a bad idea, I am sure you can use paperclip with S3 / cloudfront ( as mentioned in the answers below )
Heroku recommends storing file uploads on s3, and provides instructions on how to do so for several Rails file plugins.
Rethink what you're doing. Storing images in the db is generally a bad idea. For more info, see here.
ry is right to point you towards S3. If nothing else, think of the cost: 500 MB of database space on Heroku is $50/month. On S3, it'll be 15 cents.
Image serving from S3 is slow. Latencies of 0.5s to 2s are common, which means it should only be used for media assets.
来源：https://stackoverflow.com/questions/1596725/store-image-in-database-using-rails-paperclip-plugin