Transform String (CamelCase) to symbol ruby

script_test.rb

string = "nameLolApiTruc"
# "nameLolApiTruc"
string!.gsub(/([a-z\d])([A-Z])/,'\1_\2')
# "name_Lol_Api_Truc"
string.downcase.to_sym
# :name_lol_api_truc

# methods examples extend String and Hash class
class String
  def to_symbol
    self.gsub(/([a-z\d])([A-Z])/,'\1_\2').downcase.to_sym
  end
end