Attachments support

[kostia]

Hello,

me spamming again...

Is there any chance there will be attachment support? If not (or not in the near future): how can one achieve some kind of this functionality?

Thanks a lot!

[kostia]

Responding to my own question: some kind of that can be achieved with Carrierwave. Here is a simple uploader (without caching):

require 'carrierwave'
require 'carrierwave/validations/active_model'

module CarrierWave
  module Elastictastic
    include CarrierWave::Mount

    def mount_uploader(column, uploader=nil, options={}, &block)
      field options[:mount_on] || column

      super

      alias_method :read_uploader, :read_attribute
      alias_method :write_uploader, :write_attribute

      public :read_uploader
      public :write_uploader

      include CarrierWave::Validations::ActiveModel

      if uploader_option column.to_sym, :validate_integrity
        validates_integrity_of column 
      end

      if uploader_option column.to_sym, :validate_processing
        validates_processing_of column
      end

      after_save :"store_#{column}!"
      before_save :"write_#{column}_identifier"
      after_destroy :"remove_#{column}!"
    end 
  end 
end

Unfortunately it will only work for images and will not correctly index them.

[outoftime]

Does ES itself have support for attachments, in particular?

[kostia]

Yes, but optionally (available as a separate plugin). See here: http://www.elasticsearch.org/tutorials/2011/07/18/attachment-type-in-action.html

Great would be following:

class Applicant
  include Elastictastic::Document
  field :cv, type: :attachment
end

alice = Applicant.new cv: Base64.encode64(open('Alice_Johnson_CV.pdf'))
alice.save

Applicant.query(query_string: {query: 'Alice'}).first #=> #<Applicant id="...">
_.cv #=> "Tm93IGlzIHRoZSB0aW1lIGZvciBhbGwgZ29vZCBjb2..."

[outoftime]

I see. Looking over that tutorial, it would appear that attachments are just indexed like any other field -- I'm not sure what Elastictastic would need to do to support it explicitly? I have a feeling the sample code above should work with current Elastictastic...

[kostia]

Sorry, my fault. It works out of the box.