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matschaffer/use_a_gist_walter.rb

Created January 17, 2013 20:53
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use_a_gist_walter.rb
####
belongs_to :attachable, :polymorphic => true
####
has_many :images, :as => :attachable, :dependent => :destroy
accepts_nested_attributes_for :images, :reject_if => lambda { |a|
a[:file].blank? && a[:file_uid].blank? && a[:file_url].blank? && a[:name].blank?
}, :allow_destroy => true
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