ruby script/plugin install http://rquerypad.rubyforge.org/svn/trunk/rquerypad/

xample
=======
suppose the asscociations of User Thread Reply is 1:N:N

@users = User.find(:all, :group => ["threads.created_at", "name"])

generate:

[:all, {:group=>"threads.created_at, users.name", :include=>[:threads]}]

@users = User.find(:all, :conditions => ["threads_.replies.title = ?", "rquerypad"])

generate:

[:all, {:inner_joins=>["threads"], :conditions=>["replies.title = ?", "rquerypad"], :include=>[{:threads=>:replies}]}]

#note: the :inner_joints is processed by rquerypad before sending sql to database

@users = User.find(:all, :conditions => ["threads.replies.title = ? and threads.id = ?", "rquerypad", 1])

generate:

[:all, {:conditions=>["replies.title = ? and threads.id = ?", "rquerypad", 1], :include=>[{:threads=>:replies}]}]

#note: single "threads" was removed from includes

Setup
=======
#to set debug model, in rails initialized script

$RQUERYPAD_DEBUG = true

#to support rails 1.2.6, in rails initialized script, such as environment.rb
#default support rails 2.0

$RQUERYPAD_RAILS = "1.2"

There is currently no advanced documentation for this plugin.