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# File 'lib/acts_as_content_highlightable/model.rb', line 3
def acts_as_content_highlightable_on(column_names)
column_names = [column_names].flatten
if not column_names.all? {|column_name| self.column_names.include? column_name.to_s}
raise ArgumentError, "acts_as_content_highlightable_on: One or more invalid attribute #{column_names}"
end
class_eval do
has_many :content_highlights, :as => :highlightable
before_save :prepare_for_content_highlights, :if => column_names.map{|column_name| "#{column_name}_changed?"}
end
class_eval %{
def highlightable_columns
return #{column_names.map(&:to_s)}
end
def prepare_for_content_highlights
#{column_names}.each do |column_name|
self[column_name.to_sym] = ActsAsContentHighlightable::HtmlNodeParser.new(self[column_name.to_sym]).assign_unique_node_identifiers("data-" + ActsAsContentHighlightable.unique_html_node_identifier_key).body_content
end
end
}
end
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