Newbie question: how do I prevent your code snippet from becoming an n-
fetch?
Eager loading will work, but if all I want are the codes, then eager
loading of the associated courses will over-retrieve data.
Yes, yes, I know - don't over optimize. But if I know how to optimize,
at least I can put a comment in the code to remind me when I get
twitter-size traffic. :-)
-- Bosco
On Sep 9, 9:55 am, William Yeung <[EMAIL PROTECTED]>
wrote:
> See if I qualify:
>
> courses.collect {|c| c.code}.join(",")
>
>
>
> John Small wrote:
> > I have a model, Account, with many Courses. I want to display the course
> > codes for those courses as comma delimited text in an attribute of the
> > account. So I would have
>
> > Account << ActiveRecord::Base
> > has_many :courses
>
> > def get_course_codes_as_text
> > courses.each {|course| something something but I don't know what
> > end
>
> > Now I could do it the hard way by setting up a string var and pumping
> > stuff into it inside the block. But there's an easier Rubyesque way to
> > do this which I've seen in code elsewhere but I can't find the code now
> > so I thought I'd ask here. Something to do with join or map or something
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