putting a calculation method in the model

rubyonrails-talk
1

Do I need to define @duration somewhere? I want to calculate the duration of a call in the model and then for the view to display that calculation.

Right now, the view, show.rhtml for calls, is giving an "You have a nil object when you didn't expect it!" error :frowning:

thufir@arrakis ~/goodfellow-tool $ thufir@arrakis ~/goodfellow-tool $ cat app/views/calls/show.rhtml -n | head -n 9 | tail -n 1      9 <p> The call duration was <%= @call.duration.to_s %> long. </p> thufir@arrakis ~/goodfellow-tool $
thufir@arrakis ~/goodfellow-tool $ cat app/models/call.rb class Call < ActiveRecord::Base

  def duration     return (@end - @start).to_time   end

end thufir@arrakis ~/goodfellow-tool $

the trunk where the code is at: http://code.google.com/p/goodfellow-tool/source/browse

thanks,

Thufir