home_controller.rb

# The whole point of this file is to allow a site admin to specify what specific action OR page should be used for the home page.

class HomeController < ApplicationController
  def index
    # Setting[:site, :home_page] should return a string containing...
    #   a (url) path that corresponds to a specific node
    # or
    #   a controller#action pair like what might be used for a route's :to option (action would likely be :index, but maybe not)
    # or
    #   a controller#action#id triple which would allow actions (like :show) that require an id to be used

    setting = Setting[:site, :home_page].split '#'

    case setting.count
    when 1 # show a specific node
      # NodesController#show_human finds a node based on the path that was set when the node was created
      # a path could be 'about' or 'about/when/i/was/a/boy' or the node's database id
      params[:path] = setting.first
      s_controller, s_action = :nodes, :show_human
    when 2, 3 # show an arbitrary controller#action pair, with optional id
      s_controller, s_action, params[:id] = setting
      params.delete :id unless params[:id]
    else
      # this shouldn't happen...
      # fall back to just listing nodes
      s_controller, s_action = :nodes, :index
    end

    reply = "#{s_controller}_controller".classify.constantize.action(s_action).call(env)
    status, response_headers, response_body = reply

    # FIXME this is gross, but seems to work
    # this is needed because status is 304 every other request. why?
    if (200..299).include? status
      render :text => response_body.body
    else
      head status
    end
  end
end