Category Archives: Ruby

Debugging Cucumber Tests With Ruby-Debug

Posted on June 29, 2011 by Derick Bailey

Today I ran into a scenario where I needed to step through some ruby code and examine the state of various objects in my rails app. I’ve used the ruby-debug gem a number of times to do exactly this. However, … Continue reading →

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Making Mongoid Play Nice With Backbone.js

Posted on June 17, 2011 by Derick Bailey

Backbone has some great features that make it dirt-simple to integrate with a Rails back end. For example, the Backbone models have a .fetch(), .save() and .destroy() method on them. These methods make a call back to your server, based … Continue reading →

Also posted in Domain-Driven Design, NHibernate | 9 Comments

Partially Solving The Date Validation Deficiency Of Rails 3 And Mongoid 2 Models

Posted on June 13, 2011 by Derick Bailey

A while back, I posted a question on stack overflow on how to properly validate a date input from a text field input, without throwing exceptions when the string provided is not a valid date.  The core of the problem … Continue reading →

Also posted in ASP.NET MVC, Dependency Injection | 10 Comments

Using ActiveSupport::Notifications and ActiveSupport::Concern To Create An Audit Trail

Posted on June 9, 2011 by Derick Bailey

In my previous post, I outlined a scenario that needs to be audited for HIPAA compliance – a patient with a list of medications. Every time a medication is added, updated or deleted, an audit record has to be created … Continue reading →

Also posted in Domain-Driven Design | 20 Comments

How do you handle simple pub-sub, evented architecture in rails apps?

Posted on June 8, 2011 by Derick Bailey

I’ve been asking this question in various forms, via twitter, for a few days now. I’ve received a number of answers from people and have spent some time talking with Jak Charlton about the patterns that I would have used … Continue reading →

Also posted in Domain-Driven Design | 20 Comments

A Couple Of Tips For Ruby Code Blocks

Posted on June 1, 2011 by Derick Bailey

Ruby’s code blocks (a.k.a “lambdas” or anonymous functions in .net) are powerful little tools that get used everywhere, and for good reason. But, every now and then I run into a little trick or issue related to them. For example: … Continue reading →

Also posted in AutoMapper | 5 Comments

Sometimes It’s Better To Use A Ruby Hash Than Create A Custom Class

Posted on May 25, 2011 by Derick Bailey

The Eloquent Ruby book talks about the use of hashes and arrays vs classes. One of the things it covers is how hashes and arrays are often used by experienced ruby developers in place of custom classes. Coming from a … Continue reading →

Also posted in SQL | 17 Comments

Don’t Do Role-Based Authorization Checks; Do Activity-Based Checks

Posted on May 24, 2011 by Derick Bailey

I’ve built a few dozen security mechanisms in my career. Unfortunately, I kept getting it wrong, hence the need to keep building them. Over the years, though, I learned a number of different ways that a security system can be … Continue reading →

Also posted in LINQ | 10 Comments

Mongoid: Polymorphic Find Or Create New On Embedded Document Collections

Posted on May 19, 2011 by Derick Bailey

In the old v2.0.beta.20 version of Mongoid, I was able to call .find_or_create_by on an embedded document collection and pass a type as a second parameter to the method. This would allow me to create a document of a specific … Continue reading →

Also posted in Tools | 26 Comments

Re-learning The Meaning of ! in Ruby Methods

Posted on May 16, 2011 by Derick Bailey

Hugo Bonacci has been tweeting a lot about the Eloquent Ruby book, so I decided to pick up a copy. In spite in my year or two of working with Ruby, I still feel like a n00b most of the … Continue reading →

Also posted in Refactoring | 6 Comments