app/models/attachment.rb
# == Schema Information
#
# Table name: attachments
#
# id :integer not null, primary key
# opportunity_id :integer
# upload :string
# content_type :string
# file_size_bytes :integer
# has_thumbnail :boolean default(FALSE), not null
# deleted_at :datetime
# created_at :datetime not null
# updated_at :datetime not null
# text_content :text
#
# Indexes
#
# index_attachments_on_opportunity_id (opportunity_id)
#
class Attachment < ActiveRecord::Base
belongs_to :opportunity
has_storage_unit
mount_uploader :upload, AttachmentUploader
validates :upload, presence: true
end