Archive for the ‘plugin’ Category

Tools in the Studio

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Obtiva’s Studio is busy churning out projects and I thought it would be good to let the rest of the world what we are up to. Most of our rails projects are now using CruiseControl.rb, Zentest, restful_authentication, gems, query_trace, attachment_fu, Rcov, redgreen, exception_notification and mocha. While the list may seem long we are always looking for new tools. If you have any suggestions please comment.

As a team we’ve setup growl integrations for cruise, autotest and redgreen which is strongly suggested. Make TDD easier for yourself. As a team we really need to put out a tutorial on how to set all of this up properly. In my opinion you are doing yourself a disservice without them.

A quick side note, grep -r is mostly dead around here due to ack. Try ack, you’ll love it.


We’ve also pushed a lot of our interest into JRuby and Erlang. We are all extremely excited for the opportunities those two tools will provide. JRuby’s memory usage have our mouths drooling. If you are not paying attention to Charles Nutter’s blog you are missing out! The pace of everything surrounding JRuby is astounding. Merb and Sinatra are on our radar.


Joseph Leddy is deep in the bowels of ActiveWarehouse and FasterCSV where he is making millions of SQL rows consumable for our clients. Joseph is also exploring ETL Tool. He’s been aggressively implementing state machines alongside access control also. Tools unique to Joseph are query_analyzer and tail_logs which I’m eager to take a look at. Joseph recently implemented some multi-server file uploading using BackgrounDRB with tests!

Nate Jackson’s work involves sphinx via acts_as_sphinx mashed into will_paginate and aspell. He’s created an intelligent word suggestor for misspelled words and phrases using raspell. Nate spent a day or two scraping the web with hpricot, WWW:Mechanize , csspool and sass. Nate’s also pushing the studio into NetBeans for Ruby, RSpec, Dvorak and Leopard. Nate likes to include svn_tools and dot.rake in his projects.

Dave Hoover‘s working on innovative interfaces with Ajax and BackgroundDRB. Dave has picked up AR::Extensions as a hammer for memory and speed intensive ActiveRecord imports. He’s also weaving together fleximage and attachment_fu in a few projects. I don’t know much about it yet, but Dave seemed please with ZIYA and Flash chart delivery. Dave’s spent some of his time plunging into Sinatra too. Dave’s editor of choice is Textmate. Other things in his camp include: liquid, RedCloth, and chronic.

Dave also released a gem called TamTam using hpricot that will inline css. You can find the gem here. Dave and Nate paired up to create Obtiva’s first OS X widget here. I paired up with Dave to create a rails plugin for TamTam too which is named inline_css.

Ryan Platte has put together some sweet mashups with GWT, AIM Presence API, BackgrounDRb and ActiveScaffold. While Ryan wasn’t a huge fan of ActiveScaffold I was impressed. His editor of choice is rails.vim. For testing he is using UnitRecord to speed up his test suite among its other benefits. Ryan is now promoting the use of factories over fixtures. Ryan and Gareth demoed Ruby Prof to the rest of the studio. Ryan introduced me to the wonderful world of GNU Screen. The little exposure I’ve had to his projects has me very impressed.

Gareth Reeves is doing work in Event Driven Architecture and Event Driven Programming. He introduced me to testing Java with jMock.

I’ve been working with Amazon ECS, Streamlined and a session bridge between rails and Perl’s CGI Session. I strapped subdomain/SEO love onto a project using request_routing, url_for_domain, and acts_as_sluggable. Nate and I pulled ActiveMerchant into a project which was much less painful than expected. If you’re doing complex condition building my tool of choice is condition_builder. I also extended restful_authentication so that it can support authentication for multiple types of users.

Written by syntatic

November 30, 2007 at 9:42 am

Dynamic finders: modifying find_by_id for legacy tables

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One of my projects at Obtiva integrates heavily with a legacy database that isn’t “rails friendly”. None of the primary keys are named id so I use set_primay_key “model_id” all over the place along with some other workarounds.

I ran into an interesting problem when integrating techno weenie’s restful authentication into an existing user model. The plug-in raised an error when trying to run User.find_by_id and logged a no method error. I quickly found that, in their current state, dynamic finds aren’t aware of a primary key being set.

Since Rails advertises itself as opinionated software the behavior makes sense, however if you’re wanting to write highly portable code for say a plug-in when you might want to put a warning in the instructions. Some of your users can’t rely on a standard Model.find_by_id(1).

For the sake of time, I went ahead and modified the authentication plugin, but it would be nice if find_by_id checked for the set_primary_key and changed it to find_by_primary_key before raising an error. On that note, I think I have an idea for my first simplistic rails plug-in.

UPDATE: Instead of modifying the authentication plugin it is probably a better idea to override the find_by_id method in the User class, which would look something like this:

def find_by_id(id)

Written by syntatic

May 23, 2007 at 3:25 am