I don't want to put certain code in my controller because I think it makes things more confusing. What is the best way to manage business logic such that it doesn't end up in the controller? Basically, where should I put my regular utility classes and backing objects that may not be models? Thanks, Wes
on 2006-03-21 01:46
on 2006-03-21 01:55
application.rb can be a good spot for general purpose stuff - I put e.g. my date formatting stuff in there to ensure dates are shown consistently across an entire site. Regards Dave M.
on 2006-03-21 02:32
you could create modules and put them in the lib directory.
on 2006-03-21 04:54
Can you give an example of business logic that doesn't interact with a model? On 3/20/06, Chris H. <firstname.lastname@example.org> wrote: > > > > email@example.com > -- Jeremy H. http://www.jeremyhuffman.com
on 2006-03-21 14:03
for me, I have to access external information on an AS/400 system. My only access to the system is via ODBC, for which there is no AR Adapter avaliable. so what i did was create a module for making connections to and extracting information from the AS/400 and put it in the lib directory. AS400.rb require 'dbi' module AS400 def AS400.get_some_data(args) # do the AS/400 stuff here # massage the data if needed (strip whitespaces, do some calculations, etc) return data end end then where i need it, typically a controller, i just require 'AS400' and do AS400.get_some_data(12345) . Chris
on 2006-03-21 17:23
Personally, I'd say that looks like a model. You can just put it in your models directory, and use it from controllers the way you normally would. You'll need to set up some mocks in order to unit test it, since most back-end systems like that don't provide usable test regions. (At least not for the meaning of the word that OO programmers are comfortable with.) You can use the "model" and "service" controller class methods to make sure it gets 'required' in the appropriate place.
on 2006-03-21 21:01
> you could create modules and put them in the lib directory. It's cleaner BUT it's cached in development mode => if you change it, you need to restart the server. Alain
on 2006-03-21 21:18
I have a filename that is an attribute of one of my model objects. It references a file in the file system. I need to figure out if that file is an Excel file, a CSV file, or neither. Wes Jeremy H. wrote: > Can you give an example of business logic that doesn't interact with a > model? > > On 3/20/06, Chris H. <firstname.lastname@example.org> wrote: >> > >> > email@example.com >> > -- > Jeremy H. > http://www.jeremyhuffman.com
on 2006-03-28 16:16
class MyObject < ActiveRecord::Base ... validates_each :filename do |fname| unless [".xls", ".csv"].include?(fname.extname) model.errors.add(fname, "File does not appear to be an excel or csv file") end end