class Organization < ActiveRecord::Base attr_accessible :title, :photo, :email_id, :description, :website_url has_many :sponsorship_registrations, dependent: :destroy has_attached_file :photo, :styles => {:thumb => "100x100>", :large => "300x300>" } validates_attachment_content_type :photo, :content_type => [/jpg/, /jpeg/, /png/, /gif/], :size => { :in => 0..500.kilobytes } validates_presence_of :title, :email_id, :website_url validates_uniqueness_of :email_id end