Get dot notation for a embedded mongoid element (Going upwards in the "embedded_in" hierarchy)

get_dot_notation.rb

#
# Get dot notification for the current mongoid element
#
def dot_notation_for_element(element)
  return "" if element.nil?
  dot_notation = dot_notation_for_element_nested(element)
  if dot_notation.nil?
    return ""
  else
    dot_notation[0] = ''
  end
  dot_notation
end

#
# Get dot notification for nested elements (nesting updwards)
#
def dot_notation_for_element_nested(element)
  # Get non-nil_embedded_relation
  p = get_embedded_relation(element)
  # puts p.inspect
  if p.nil?
    return nil
  else
    "#{dot_notation_for_element_nested(p[0])}.#{p[1].inverse_of}"
  end
end

#
# Returns array [p, r], where p is the parent element for the embedded element, and
#                       r is the inverse reflection name
#
def get_embedded_relation(element)
  element.reflect_on_all_associations(:embedded_in).each do |r|
    # puts r.inspect
    p = element.send(r.name.to_s)
    return [p, r] unless p.nil?
  end
  nil
end