Comments on: Customizing :scope in acts_as_list

By: Christian

Christian — Wed, 19 Nov 2008 19:24:39 +0000

You want single quotes because you need to defer the interpolation of the variables.
If you used double quotes, #{category_id} would be replaced with whatever value it has when the model is loaded, probably not what you expect.

By: Adam Byrtek

Adam Byrtek — Wed, 16 Jul 2008 17:41:25 +0000

Another option is to manually define "scope_condition" method after invoking acts_as_list with no scope argument. This gives you more control, you can put any Ruby code inside as long as it returns a string to be included in conditions.

By: mike

mike — Sat, 10 Nov 2007 01:30:09 +0000

Anthony,

unfortunately, learning Ruby will not help you in this particular case. A better documentation with example for more cases will help though. But it's nowhere to be found.
The best way to identify this problem was to run some sample commands and see how these are converted to SQL statements in the development.log. This way it was kind of easy to identify the source of the problem. I spent lots of time trying to figure the solution for this issue, also :/

By: Anthony

Anthony — Sat, 10 Nov 2007 00:59:01 +0000

You are the MAN! I've been banging my head against the wall for an hour trying to figure out how to do this. Maybe I should try to learn Ruby before trying to do crazy stuff with Rails…

By: mike

mike — Wed, 07 Nov 2007 02:31:45 +0000

hi greg,

thanks for the comment. Always a pleasure to know my little entries are of help to some people.

cheers,
mike.

By: greg

greg — Wed, 07 Nov 2007 00:51:16 +0000

thanks mike,

you did indeed save me some hitting-myself-with-blunt-objects today with your single-quote only comment… I've been doing some rails v1.2 STI stuff with acts_as_list in the subclasses and trying to scope them nicely based on the type field… tried a few hacks and stuff myself, then googled your comments on the quotes. Painful, eh?

cheers,

// greg