Comments on: Using Constants in Rails Models http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/ Just another WordPress weblog Thu, 24 Jul 2008 00:30:49 +0000 http://wordpress.org/?v=2.0.4 by: Bill Eisenhauer http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-8221 Tue, 16 Oct 2007 12:19:59 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-8221 Yeah, I've had situations where I've added a model, then later deleted it, and thus broken the migration when it runs from an early version. However, you can easily add the model into your migration to fix the migration. I think this is a matter of style and my preference is still to use model constants in the migration. It just seems more DRY and adds accuracy to your migration. Thanks for your feedback! Yeah, I’ve had situations where I’ve added a model, then later deleted it, and thus broken the migration when it runs from an early version. However, you can easily add the model into your migration to fix the migration.

I think this is a matter of style and my preference is still to use model constants in the migration. It just seems more DRY and adds accuracy to your migration.

Thanks for your feedback!

]]> by: Tom-Eric http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-8220 Tue, 16 Oct 2007 08:41:04 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-8220 You really shouldn't use your models in your migrations. It's now possible to break the migration file by modifying the model. You could solve this by placing the model in your migration file, but I'm not sure if that's the best solution. You really shouldn’t use your models in your migrations. It’s now possible to break the migration file by modifying the model. You could solve this by placing the model in your migration file, but I’m not sure if that’s the best solution.

]]> by: Bill Eisenhauer http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6938 Thu, 09 Aug 2007 01:13:09 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6938 Marcin, I actually went back to my original code and it was correct there. This means that it is either being stripped out by CodeRay or that there's a combination of characters that make the slash not render. Sorta makes you want to be cautious about the code you lift from a blog, eh? As always, one should know all of the code they deploy. Thanks for the tip. Bill Marcin,

I actually went back to my original code and it was correct there. This means that it is either being stripped out by CodeRay or that there’s a combination of characters that make the slash not render.

Sorta makes you want to be cautious about the code you lift from a blog, eh? As always, one should know all of the code they deploy.

Thanks for the tip.

Bill

]]> by: Julian Schrader http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6936 Wed, 08 Aug 2007 21:33:08 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6936 Thanks for your great tips! By the way: GeoKit has helped me a lot building <a href="http://waschstrasse.info" rel="nofollow">Waschstrasse.info</a>—thanks! Thanks for your great tips!

By the way: GeoKit has helped me a lot building Waschstrasse.info—thanks!

]]> by: Marcin Olak http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6931 Wed, 08 Aug 2007 14:28:03 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6931 From <strong>Programming Ruby</strong>: <blockquote cite="Programming Ruby">[...] a period (.0) appearing outside brackets represents any character except a newline [...]</blockquote> Thus we need a backslash: <code> TO_FORMAT = /^[_a-z0-9+.-]+@[_a-z0-9-]+\.[_a-z0-9.-]+$/i </code> I know the code is for demonstration purposes only but still, we don't want bugs to propagate throughtout the Internet from this magnificent blog :) From Programming Ruby:

[…] a period (.0) appearing outside brackets represents any character except a newline […]

Thus we need a backslash:

TO_FORMAT = /^[_a-z0-9+.-]+@[_a-z0-9-]+\.[_a-z0-9.-]+$/i

I know the code is for demonstration purposes only but still, we don’t want bugs to propagate throughtout the Internet from this magnificent blog :)

]]> by: Marcin Olak http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6916 Tue, 07 Aug 2007 09:22:51 +0000 http://blog.billeisenhauer.com/2007/08/06/using-constants-in-rails-models/#comment-6916 I like this technique. BTW. GeoKit rocks! :) I like this technique. BTW. GeoKit rocks! :)

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