def index
    @config_vars = ConfigVar.order(:name).to_a

    defined_names = ConfigvarsRails.variable_names
    default_names = defined_names - @config_vars.map { |var| var.name.to_sym }
    @default_vars = default_names.map { |name|
      [name.to_s, ConfigvarsRails.variable_descriptor(name)]
    }.sort

    respond_to do |format|
      format.html # index.html.erb
    end
  end
def index
    @config_vars = ConfigVar.order(:name).to_a

    defined_names = ConfigvarsRails.variable_names
    default_names = defined_names - @config_vars.map { |var| var.name.to_sym }
    @default_vars = default_names.map { |name|
      [name.to_s, ConfigvarsRails.variable_descriptor(name)]
    }.sort

    respond_to do |format|
      format.html # index.html.erb
    end
  end
GET /config_vars