This gem extends the Paperclip so that you can save file on IPFS network.

gem "paperclip-ipfs-storage"

or put it on the Gemfile.

Add attachment type field into the schema as usual, then add string type field as [field_name]_ipfs_hash. For example:

class CreateMediaAttachments < ActiveRecord::Migration[5.0]
  def change
    create_table :media_attachments do |t|
      t.attachment :file
      t.string :file_ipfs_hash, :file_ipfs_hash, null: true, default: nil
    end
  end
end

Then specify :ipfs for the :storage option and ':gateway_url' for the :url in the model. For example:

class MediaAttachment < ActiveRecord::Base
  has_attached_file :file,
    :storage => :ipfs,
    :url => ':gateway_url'
end

You cannot remove the file uploaded. This is due to the design of IPFS ¹.