ruby-on-rails-3.1

I'm trying to use accepts_nested_attributes_for on a has_one association model, and getting absolutely nowhere :-( I have two models, a user and a location. A user has one location: class User < ActiveRecord::Base # current location has_one :location, :dependent => :destroy accepts_nested_attributes_for :location end class Location < ActiveRecord::Base belongs_to :user end I can save changes to the model by using User.find(1).location.current_location_text = "blah" from the console, so I know the associations are set up correctly. I have two forms on the edit user page. One that updates the

Just started to adapted to rails 3.1, I started to write coffeescript and sass and everything works fine in development. When I run the server in production, I only get: <link href="/stylesheets/application.css" media="screen" rel="stylesheet" type="text/css" /> <script src="/javascripts/application.js" type="text/javascript"></script> in the source code of the page, there's no hashcode generated and both assets has routing errors: Routing Error No route matches [GET] "/stylesheets/application.css" What's the cause of this? Did I forget to do something? settings in environments/production.rb :

I just finished chapter 10 of the Ruby on Rails Tutorial , adding the ability to edit/update, index, and destroy users. Everything appears to be working properly in my app, but many of my tests are failing when I run RSpec. I have the users_controller_spec set up exactly as the book does it and my application code is the same as well. Could one issue may be that I am using Rails 3.1.1 as opposed to Rails 3.0 which he uses in the book? It hasn't really been an issue for previous tests, just occasionally for a few different lines of code. The issues started appearing after I started section 10.2

I want to completely disable the routes /users/sign_in for get and post. I was able to successfully override them using the following: devise_for :users do get "/admin" => "devise/sessions#new", :as => :new_user_session post "/admin" => "devise/sessions#create", :as => :user_session end And when I run rake routes I see the following: new_user_session GET /admin(.:format) {:controller=>"devise/sessions", :action=>"new"} user_session POST /admin(.:format) {:controller=>"devise/sessions", :action=>"create"} new_user_session GET /users/sign_in(.:format) {:action=>"new", :controller=>"devise

Example I have: @test = Pakke.find([[4], [5]]) In my Pakke table I have a column named prismd How do I sum the two values for the prismd columns for @test? Holger Just You can summarize directly on the database by creating the respective SQL like this: Pakke.sum(:prismd, :conditions => {:id => [4,5]}) See ActiveRecord::Calculations for more usage examples and general documentation. ActiveRecord has a bunch of built-in calculation methods, including sum : @test = Pakke.where(:id => [4, 5] ).sum(:prismd) Rails beginner Pakke.find([[14], [15]]).map(&:prismd).sum test = Order.where(potential

I have read few posts regarding NaN but did not figure out how to deal with it in Ruby on Rails. I want to check a value if it is a NaN I want to replace it with Zero(0). I tried the following logger.info(".is_a? Fixnum #{percent.is_a? Fixnum}") when percent has NaN it returns me false. I have made few changes in the logger logger.info("Fixnum #{percent.is_a? Fixnum} percent #{percent}") Output Fixnum false percent 94.44444444444444 Fixnum false percent NaN Fixnum false percent 87.0 NaN is instance of Float . Use Float#nan? method. >> nan = 0.0/0 # OR nan = Float::NAN => NaN >> nan.class =>