问题
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?
回答1:
Check out this sample app
http://patshaughnessy.net/2009/5/29/paperclip-sample-app-part-3-saving-file-attachments-in-a-database-blob-column
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 )
回答2:
Heroku recommends storing file uploads on s3, and provides instructions on how to do so for several Rails file plugins.
回答3:
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.
回答4:
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