benburkert

## index.html.haml

[email protected] do |user|
  -fetch_partial :short, :object => user   # generated key should be "users/_short.html--object=#{user.to_param}"


## admins.html.haml

-fetch_fragment :count => User.admins.count do    # key should be "path__to__admins__html__haml-1--count=#{User.admins.count}"
  %ul

benburkert

Merb::Router.prepare do
  match("/hello") do
    match("world").to(:controller => "worlds", :action => "hello") # matches /helloworld
    match("there").to(:controller => "theres", :action => "hello") # matches /hellothere
  end

  default_routes
end

benburkert

Fri Aug 15 15:25:39 -0500 2008: Read error: #<NoMethodError: undefined method `each' for nil:NilClass>
/opt/local/lib/ruby/gems/1.8/gems/merb-core-0.9.5/lib/merb-core/rack/handler/mongrel.rb:85:in `process'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:159:in `process_client'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `each'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:158:in `process_client'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `initialize'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `new'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:285:in `run'
/opt/local/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb:268:in `initialize'

benburkert

merb-cache was rewritten with a few goals in mind:
	<ol>
	<li>make it modulular</li>
		<li>define a public <span class="caps">API</span></li>
		<li>do the heavy lifting on key generation</li>
		<li>100% thread-safe</li>
		<li>work with multiple caching layers through the same <span class="caps">API</span></li>
		<li>keep it hackable</li>
	</ol>

benburkert

# or, we can specify eager caching in the action itself
def index(page = 1)
  unless page == 1
    eager_cache :index do |controller|
      controller.params[:page] = page + 1
    end
  end

  display Acticle.paginate(:page => page)
end

benburkert

merb-cache was rewritten with a few goals in mind:
# make it modulular
# define a public API
# do the heavy lifting on key generation
# 100% thread-safe
# work with multiple caching layers through the same API
# keep it hackable

h2. Stores

benburkert

class CreditCard
  include DataMapper::Resource

  repository(:default) do
    property :id,             Serial
    property :month,          Integer
    property :year,           Integer
    property :digits,         Integer       #last 5 digits
  end

benburkert

#models
class Cat < Mamal; end # loads the 'mamal.rb' if Mamal is undefined

#controller

Cats < Mamals; end # if mamals is a controller, is this kosher?

benburkert

class Sessions < Application
  def create
    session.authenticate!  #authenticates the user by username/password OR openid, raises an Unauthenticated if the user cannot be authenticated

    redirect(url(:home))
  end
end

class Session
  def authenticate!

benburkert

class Application < Merb::Controller
  def _call_action(action)
    repository(:default) { catch(:halt) { super(action) }}
  end
end