Rails paperclip doesn't display uploaded images from Amazon S3

Add this to your application.rb or to the config file for each environment:

config.paperclip_defaults = {  :storage => :s3,  :s3_host_name => 's3-eu-central-1.amazonaws.com',  :s3_credentials => {    :bucket => 'your bucket',    :access_key_id => 'your access-key-id',    :secret_access_key => 'your secret-access-key'  },   :url =>':s3_domain_url',  :path => '/:class/:attachment/:id_partition/:style/:filename'}

You can then remove the :url and :path config from your model.

Adding my code here because the syntax has changed slightly since the last answer.

You need your S3_host_name added to your config.paperclip_defaults in config/environments/development.rb and also production.db.

Here is the full code snippet, change us-west-2 to whatever region your bucket is on:

config.paperclip_defaults = {  storage: :s3,  s3_host_name: 's3-us-west-2.amazonaws.com',  s3_credentials: {    bucket: ENV.fetch('S3_BUCKET_NAME'),    access_key_id: ENV.fetch('AWS_ACCESS_KEY_ID'),    secret_access_key: ENV.fetch('AWS_SECRET_ACCESS_KEY'),    s3_region: ENV.fetch('AWS_REGION'),  }}

Try also add this to your model where your has_attached_file method present:

:url =>':s3_domain_url'