paperclip-aws is a full featured storage module that supports all S3 locations (American, European and Japanese) without any additional hacking.
- supports US, European and Japanese S3 instances;
- supports both
httpandhttpsurls; - supports expiring urls;
- supports different permissions for each Paperclip style;
- supports generating urls for
read,writeиdeleteoperations; - supports amazon server side encryption (thanks to @pvertenten);
- supports versioning;
- highly compatible with included in Paperclip S3 storage module
gem install paperclip-aws
After this add 'paperclip-aws' to your Gemfile or environment.rb
class SomeS3Attachment < ActiveRecord::Base
def self.s3_config
@@s3_config ||= YAML.load(ERB.new(File.read("#{Rails.root}/config/s3.yml")).result)[Rails.env]
end
has_attached_file :data,
:styles => {
:thumb => [">75x"],
:medium => [">600x"]
},
:storage => :aws,
:s3_credentials => {
:access_key_id => self.s3_config['access_key_id'],
:secret_access_key => self.s3_config['secret_access_key'],
:endpoint => self.s3_config['endpoint']
},
:s3_bucket => self.s3_config['bucket'],
:s3_host_alias => self.s3_config['s3_host_alias'],
:s3_permissions => :public_read,
:s3_protocol => 'http',
:s3_options => {
:server_side_encryption => 'AES256',
:storage_class => :reduced_redundancy,
:content_disposition => 'attachment'
},
:path => "company_documents/:id/:style/:data_file_name"
# You also can modify :s3_credentials, :s3_bucket, :s3_permissions, :s3_options, :s3_protocol, :s3_host_alias directly in instance.
before_save do
self.data.s3_options[:content_disposition] = "attachment; filename=#{self.data_file_name}"
self.data.s3_options[:server_side_encryption] = true if self.confidential_information?
self.data.s3_options[:storage_class] = true if self.unimportant_information?
self.data.s3_protocol = 'https' if self.confidential_information?
self.data.s3_permissions = :authenticated_read if self.private?
end
end
Create link for file that will expire in 10 seconds after it was created. Useful when redirecting user to file.
file.data.url(:original, { :expires => Time.now + 10.seconds, :protocol => 'https' })
Endpoint where your bucket is located. Default is 's3.amazonaws.com' which is for 'US Standard' region.
You can find full list of endpoints and regions here
Sets permissions to your objects. Values are:
:private
:public_read
:public_read_write
:authenticated_read
:bucket_owner_read
:bucket_owner_full_control
You can setup permnissions globally for object or per style:
:s3_permissions => :public_read
:s3_permissions => {
:thumb => :public_read,
:medium => :authenticated_read,
:default => :authenticated_read
}
Default protocol to use: 'http' or 'https'.
Hash of additional options. Available options are:
:server_side_encryption–'AES256'(the only available encryption now):storage_class–:standard(default) or:reduced_redundancy:content_disposition
Remember to specify a folder in a root of your bucket. If you don't , you'll be able to save without problems, but S3 will respond with Access Denied on read.
Examples:
-
Bad (you will get permission denied error)
:path => "/:style/:id/:filename":path => "/images/:id/:filename"
-
Good (there is a root folder specified)
:path => "images/:style/:id/:filename":path => ":style/:id/:filename"
The main problem of the "Bad" case - it creates nameless folder in a root of a bucket which seems to be an issue when reading, so make sure you don't put '/' in front of the path.
'paperclip-aws' redefines Paperclip url method to get object URL.
def url(style=default_style, options={})
end
Supported options are:
-
:protocol—'http'or'https'Use this options to redefine default protocol, configured in model.
-
:expiresSets the expiration time of the URL; after this time S3 will return an error if the URL is used. This can be an integer (to specify the number of seconds after the current time), a string (which is parsed as a date using Time#parse), a Time, or a DateTime object. This option defaults to one hour after the current time.
Default is set to 3600 seconds.
-
:actionMethod, the HTTP verb or object method for which the returned URL will be valid. Valid values:
:getor:read:putor:write:delete
Default is set to
:read, which is the most common used.
'paperclip-aws' lets you easily use S3 file versioning if it is enabled for selected bucket. To find more information about versioning and how to enable it, please follow AWS FAQs and AWS S3 Docs.
Also you can enable versioning from your Rails console by using following code:
some_s3_attachment.data.bucket.enable_versioning
Please make sure, that user that is used to connect to S3 has enough permissions to do this, or you will get AWS::S3::Errors::AccessDenied error.
To get array of file versions use #versions method:
some_s3_attachment.data.versions()
Yes, usage of paperclip-aws is confirmed by several rather big projects:
I hope that it is used in a lot of other projects, if you know them – let me know.
- Fork the project.
- Make your feature addition or bug fix.
- Add tests for it. This is important so I don't break it in a future version unintentionally.
- Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
- Send me a pull request. Bonus points for topic branches.
Paperclip-AWS is maintained by JetRockets.
Contributors:
It is free software, and may be redistributed under the terms specified in the LICENSE file.