change theme in your helper for joshuascott

gistfile1.rb

  def current_theme
    # first, check if we've tried to access this already and if so @current_theme will be populated with a value.
    @current_theme ||= if params[:ChangeTheme] == "true"
      # If the user is trying to change the theme, first: construct an array of possible themes.
      # then: reject the theme in the current session if it is present.
      # Finally, grab a random sample to use a random theme from the array of themes.
      %w[power.css creative.css communication.css].reject{|theme| theme == session[:current_theme]}.sample
    else
      # The user is not trying to change the theme so just return the current theme saved to sesssion OR
      # return the default theme which is 'power.css'
      session[:current_theme] || 'power.css'
    end

    # Now store the result of @current_theme into the session for the next request
    session[:current_theme] = @current_theme

    # Finally, return the @current_theme
    @current_theme
  end