Comments on: [BTS] Magic Models – Class creation

By: Anil

Anil — Thu, 15 Nov 2007 22:02:48 +0000

I want to create an internal admin view to display the output of “show variables” from mysql. What’s the best approach do this?

For example, I’m doing something like this:

@variables = ActiveRecord::Base.find_by_sql “show variables;”

Then, I get stuff like this back (227 elements in @variables) in script/console:

>> @variables[0]
=> #”auto_increment_increment”, “Value”=>”1″}>

However, I’m not sure how to get Variable_name and Value; do I access this as a Hash element? An attribute?

Should I create a custom Model class such as this?
class MySql

By: Ruby, a message to you » GuessMethod 0.1.1 - Now works with Rails!

Ruby, a message to you » GuessMethod 0.1.1 - Now works with Rails! — Fri, 09 Nov 2007 01:16:25 +0000

[...] It was this old Dr. Nic post that got me over the hurdle solving this one. Thanks Dr. Nic. [...]

By: Adam

Adam — Wed, 09 May 2007 13:02:51 +0000

The memories indeed. I think I might still have my BTN report books. I never used so much coloured pen to make those reports look purdy.

Great post. Its emboldens me to see successful plugins demonstrate some deep class overiding. Something I might normally avoid thinking I should find another way.

Sorry for the late comment, but when I saw BTN i had to.

By: Dr Nic

Dr Nic — Tue, 13 Feb 2007 10:52:11 +0000

@sergio – thanks for that. Fixed to use lots of single quotes. Wordpress is converting all double quotes to fancy-pants curly quotes, and these don’t copy+paste well!

By: Sergio Espeja

Sergio Espeja — Tue, 13 Feb 2007 10:45:20 +0000

Very interesting Ruby meta-programming tips!

I think that there’s an error in proposed code:
klass_code = %q{def to_s; “I’m magically generated’; end }

The closing quotation mark need to be double instead of simple, like:
klass_code = %q{def to_s; “I’m magically generated”; end }

By: computers should be less friendly » Blog Archive » ABAP Magic Models

computers should be less friendly » Blog Archive » ABAP Magic Models — Sun, 26 Nov 2006 22:25:55 +0000

[...] After reading a lot about Rails and it’s former inclusion (thanks to Tom and Ryan) of a bunch of REST functionality into the next release and a blog by Dr. Nic about his Magic Models project I’ve decided to embark on a new project. [...]

By: Tony Martin

Tony Martin — Wed, 04 Oct 2006 17:49:35 +0000

Being still a bit new to Ruby and Rails, I find the article useful but would have found a slightly more detailed explanation helpful.

By: andrew

andrew — Tue, 15 Aug 2006 19:20:21 +0000

Just beutiful. I had been creating ‘Generic’ ActiveRecords like ActiveRecord::Base.find_by_sql("SELECT * FROM #{table}) in throwaway scripts. And then accessing the results with the ‘_before_type_cast’ magic method. But this is so elegant.

By: Hammed

Hammed — Mon, 14 Aug 2006 10:03:30 +0000

Dr. Nic,

Nice writeup. Looking forward to more articles like this one. Thanks!

By: Brett

Brett — Sun, 13 Aug 2006 11:56:52 +0000

Great post, Not too long, but still just enough to make people want to look BTS.