class Haml::Buffer

def self.merge_attrs(to, from)

Returns:
  • ({String => String}) - `to`, after being merged

Parameters:
  • from ({String => String}) -- The attribute hash to merge from
  • to ({String => String}) -- The attribute hash to merge into 
def self.merge_attrs(to, from)
  if to['id'] && from['id']
    to['id'] << '_' << from.delete('id').to_s
  elsif to['id'] || from['id']
    from['id'] ||= to['id']
  end
  if to['class'] && from['class']
    # Make sure we don't duplicate class names
    from['class'] = (from['class'].split(' ') | to['class'].split(' ')).sort.join(' ')
  elsif to['class'] || from['class']
    from['class'] ||= to['class']
  end
  to.merge!(from)
end