RubyDoc.info: File: README – Documentation for rquerypad (0.1.22)

Rquerypad

Simplify query options with association automation and improve inner join for activerecord of rails

Feature

single name string decribe associations
support to mix inner join and outer join with any order
auto remove duplicated joins from other association in different depth
support :conditions, :order, :group
auto merge to original :include, :joins

Install

ruby script/plugin install rquerypad.rubyforge.org/svn/trunk/rquerypad or ruby script/plugin install rquerypad.googlecode.com/svn/trunk/rquerypad

Example

suppose the asscociations of User <-> Thread <-> Reply is 1:N:N

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

:all, users.name”, :include=>

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

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

#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, = ? and threads.id = ?”, “rquerypad”, 1], :include=>}

#note: single “threads” was removed from includes

Setup

#to set debug model, in rails initialized script $RQUERYPAD_DEBUG = true

Test

Note: current migrate script works only in rails 2.0 or later

1.Prepare

the test depends on sqlite3 database, the following code should be add into your database.yml and place rquerypad.rb(copy from test.rb) in config/environment

rquerypad:

adapter: sqlite3
database: vendor/plugins/rquerypad/test/db.rquerypad
timeout: 5000

2.database migrate

execute the following script

rake migrate

3.start test

execute the following script rake