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clemens — 18 posts

New post in my blog: Using SSL in your local Rails environment.
Have you ever needed multiple validations on one field (I bet you did!) but didn't like multiple error messages showing up at the same time? Read my blog post to see how you can prevent it.
As a programmer, you should have the best work environment possible. Go read my thoughts on the topic if you're interested.
After last week's first couple of sessions, I've decided to continue the Code With Me experiment.
Check out the blog post if you're interested in working with me for free. I've also included summaries of the first session in the post for you to check out.
2011 has been a good year for me so far – financially as well as in terms of cool work in general. I feel like it’s time to share some of that luck with others and spend a couple of hours per week working pro bono, helping people. Read the blog post for details and spread the word. :-)
Lots of people love using named scopes in Rails 2. However, in Rails 3 they're not only more or less obsolete but can also hinder productiveness in teams by being update blockers. Read about the reasons and alternatives in the railway blog.
If you want/need to have both, Rails 3 and Rails 2.3, installed in parallel on your system you might want to read the latest blog post over on the blog to find out how you can avoid running into dependency hell by using Ruby Version Manager (rvm).
Have you ever wondered how to test your multilingual app using Cucumber without breaking your steps every time you change a text? Or how to test the app across multiple locales? And all that - if possible - without cluttering up your stories/steps too much? Read here about some possible approaches.
Do you need to parse localized user input such as numbers and dates and you're tired of always having to write your custom attribute accessors?

The new delocalize plugin takes away some of your pain and helps you parse localized date without having to write custom attribute accessors yourself.
If you need a calendar helper plugin with i18n support, you might want to check out LaterDude. LaterDude is heavily inspired by Jeremy Voorhis'/Geoffrey Grosenbach's popular calendar_helper plugin and can - with a few small adjustments - be used as a drop-in replacement.
RailsConf Europe 2008 Coverage at
Localizing Rails tutorial
Trevor Turk's Simple Localiziation in Rails 2.2 showed some basics of localizing parts of your Rails applications. The article Localizing Rails could be seen as a more in-depth follow-up on Trevor's article. It includes a demo application that shows of most of the localization features that are built right into Rails core at the moment.
I just released my localized_dates plugin that is based on Rails' new i18n features and helps localizing date and time formats. Check out the announcement and the GitHub project including a massive readme.
Ever wondered when and when not to raise exceptions? This article should give you an idea when raising exceptions is a good idea an when you should avoid it.
It does that by walking through a practical example (a method in the Rails i18n project).
The second Part of the Guide to Unobtrusive JavaScript hast just been published on the railway blog. If you're interested in keeping your HTML clean of JavaScript code, this article might give you a few cool tips on how to do it using the great lowpro library.
Unobtrusive JavaScript has been a big topic over the last few months and even years. This article is the first in a series of articles to come and shows you how to remove JavaScript from your HTML codes using Dan Webb's phenomenal Prototype-based library to define behaviors of page elements.
Hardly anybody denies that testing your model is absolutely necessary to build a robust application. The question is: Do we really need Controller and View tests in our Rails applications? (The article talks about rspec and Rails but most of it can also be applied to other testing frameworks and web frameworks.)
A little article on the basics of SQL joins and indexes that may help you out if you're not familiar with some slightly advanced SQL/DBA stuff yet.