# Dry collections in other models **URL:** \ **Category:** Rails\ **Created:** [February 6, 2010, 12:59pm UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029 "2010-02-06T12:59:48Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![craigrails](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c2a13f/32.png) [@craigrails](https://www.ruby-forum.com/u/craigrails)\ **Post date:** [February 6, 2010, 12:59pm UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029/1 "2010-02-06T12:59:48Z")
Starting over, mail program sent prematurely… 2 models, Salons, Reviews In ApplicationHelper.rb… SALON\_STATES = Salon.find(:all, :group =\> ‘state’, :select =\> ‘state’) So in any view, I can collect… \<%= options = [[‘Select a State’, @state]] + ApplicationHelper::SALON\_STATES.collect { |salon| [salon.state] } select ‘salon’, ‘state’, options %\> This is OK (perhaps maybe not the best way to handle and I’m open to suggestions) But now, I want a list of cities in just the selected state and I can’t manage to accomplish this anywhere but in controller code which is not very dry since I would have to replicate this code in several different controllers (like Reviews). @cities = Salon.find(:all, :conditions =\> [‘active = true AND state = ?’, @state], :group =\> ‘city’, :select =\> ‘city’) Suggestions? Craig – This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ---
**Author:** ![craigrails](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c2a13f/32.png) [@craigrails](https://www.ruby-forum.com/u/craigrails)\ **Post date:** [February 7, 2010, 2:13pm UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029/2 "2010-02-07T14:13:49Z")
Hi Craig, I had to do something similar to this in one of my apps. Ryan B. did an excellent tutorial you may want to consider. > **[\#88 Dynamic Select Menus - RailsCasts](http://railscasts.com/episodes/88-dynamic-select-menus)** > > Short Ruby on Rails screencasts containing tips, tricks and tutorials. Great for both novice and experienced web developers. Have fun, Franz ---
**Author:** ![craigrails](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c2a13f/32.png) [@craigrails](https://www.ruby-forum.com/u/craigrails)\ **Post date:** [February 7, 2010, 6:00pm UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029/3 "2010-02-07T18:00:52Z")
On Sun, 2010-02-07 at 14:12 +0100, Franz S. wrote: > Hi Craig, > > I had to do something similar to this in one of my apps. Ryan B. > did an excellent tutorial you may want to consider. > > [#88 Dynamic Select Menus - RailsCasts](http://railscasts.com/episodes/88-dynamic-select-menus) * * * I may ultimately go down that road but I am playing with named\_scope since it’s really something I should be mastering anyway and so I will ask about that in another thread… Thanks Craig – This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ---
**Author:** ![craigrails](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c2a13f/32.png) [@craigrails](https://www.ruby-forum.com/u/craigrails)\ **Post date:** [February 8, 2010, 12:12am UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029/4 "2010-02-08T00:12:31Z")
On Feb 6, 6:57 am, Craig W. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Starting over, mail program sent prematurely… > > 2 models, Salons, Reviews > > In ApplicationHelper.rb… > > SALON\_STATES = Salon.find(:all, :group =\> ‘state’, :select =\> ‘state’) Unrelated to your original question, but DON’T DO THIS. It works (for suitably small values of “works”) in development mode, but will cause odd behavior when deployed to production. At a minimum, Salons which are added after the application starts won’t show up until the server restarts. In a dynamic environment like Passenger, you could even end up with different processes having _different_ lists in SALON\_STATES… –Matt J. ---
**Author:** ![craigrails](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/c2a13f/32.png) [@craigrails](https://www.ruby-forum.com/u/craigrails)\ **Post date:** [February 8, 2010, 1:08am UTC](https://www.ruby-forum.com/t/dry-collections-in-other-models/183029/5 "2010-02-08T01:08:07Z")
On Sun, 2010-02-07 at 15:11 -0800, Matt J. wrote: > Unrelated to your original question, but DON’T DO THIS. It works (for > suitably small values of “works”) in development mode, but will cause > odd behavior when deployed to production. At a minimum, Salons which > are added after the application starts won’t show up until the server > restarts. In a dynamic environment like Passenger, you could even end > up with different processes having _different_ lists in > SALON\_STATES… * * * yeah thanks I’ve already moved this code into the ‘Salons’ model as a named\_scope 😉 Craig – This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.