similar to: Fast way of finding new position for model object?

As far as I can tell, the counter_cache option on a belongs_to model doesn''t actually save anything in the database. For example, I have the following models: class Parent < ActiveRecord::Base has_many :children, :conditions => "deleted_at IS NULL" end class Child < ActiveRecord::Base belongs_to :parent, :counter_cache => true end With the following

Disclaimer: Ruby newbie at work Thought I was going so well. Wanted to produce a select box from an array constant, with the indices returned as values , and the array values used as the descriptions. Checked out Ruby RDoc and saw there was an each_with_index method and came up with: <%= select (''type'', ''typecategory'', Typecategory.each_with_index

When using array.each_with_index how do you start at a desired index position? I can do it like this, but its not very clean and doesnt seem efficient : desired_index_start = 20 array.each_with_index do |value,index| next if index<desired_index_start end Thanks Chris -- Posted via http://www.ruby-forum.com/.

I''ve been messing around with Ferret (no punn intended). After spending some time testing it out (indexing to file), I decided to index about 10% of the data I want to eventually index. It took several hours to complete the index on my local machine, but it was created without any problems and after optimising it the searches returned results at the sort of speed I was expecting. I

Thanks for the suggestion, Ben. This seems an excellent approach to the problem, except that I''d been under the impression that one could only call render once. If you call it multiple times as the each_with_index loop iterates, are the results just combined automatically? How does that work? Thanks! Sean ----- Sean McMains AIM: SeanMcTex http://www.mcmains.net/ruminations On

I have a section of javascript which i''m trying to use to dynamically generate the options for a mult-select box, when another box''s contents are changed. Basically i have a method that returns an array of arrays, where each array is of the form [name, number] I then iterate over the arrays, and substitute in the values out of the array -

My BackgrounDRb server intermittently bails out with the following exception in the middle of a long running task running on a Worker sub classed from BackgrounDRb::MetaWorker (the point at which it raises this exception is different each time it runs) /opt/local/lib/ruby/gems/1.8/gems/packet-0.1.5/lib/packet/packet_core.rb:145:in `schedule_write'': You have a nil object when you

Hello there, I working on my tests but I getting this strange errror: I can see on the database that the object was created but I still got an failure on my test. this is my test code: test "should create artist" do assert_difference(''Artist.count'', difference = 1) do post :create, :artist => { } end assert_redirected_to

I''m using a web service to retrieve an array of results to a search and a render :partial to display those results to the user, while at the same time putting the results into the session. Is there a way for my _book.rhtml file to have access to the index of the result currently being displayed, like each_with_index makes available to its block? This would allow me to have the

I''ve spent hours researching the subject and have tried many test sequences in IRB, and rails console but I''m just having trouble making headway into what is probably a very easy subject. I understand arrays with at least 4 other languages but with Ruby I haven''t found a mental connection with how I can assign variables to arrays.. Take for example: def

Dear all, I have this line: <% $c_repo.split('','').each_with_index do |repo, i| %> in one of my template files and on the target node I''m getting this error: err: Could not retrieve catalog from remote server: Error 400 on SERVER: Failed to parse template zmfs/zmfs_prob.erb: private method `split'' called for nil:NilClass Any idea what am I missing?

I got sidetracked while benchmarking ruby factorial code: http://rosettacode.org/wiki/Factorial#Ruby I put all that code into test_fact.rb and ran with: > ruby test_fact.rb > rails runner test_fact.rb #from a fresh rails app > rails runner test_fact.rb #from a mature rails app here are the respective results: user system total real #ruby recursive:

How can I find all the methods on an object from withing irb? Thanks, Joe

Bugs item #8942, was opened at 2007-02-28 23:59 You can respond by visiting: http://rubyforge.org/tracker/?func=detail&atid=411&aid=8942&group_id=85 Category: windows-pr Group: Code Status: Open Resolution: None Priority: 3 Submitted By: Katsuyuki MIYAMUKO (miyamuko) Assigned to: Nobody (None) Summary: several typo in windows-pr. Initial Comment: I found typo in windows-pr. Attached

I have a form that I want to use to update multiple objects. In the controller, @grades = Grade.find(params[:grade].keys) @grades.each_with_index do |grade, i| grade.update_attribute(params[:grade][i]) end all_valid = @grades.inject(true) {|memo, c| c.valid? && memo } this doesn''t update the attributes as I would expect. (I would just use

I''m looking for a good web-based to do list app. Essentially, I''d like to use Basecamp''s todo management system, but that''s not an option since I can''t install Basecamp on a server I own. The information being tracked in the list cannot be sent out of my intranet. I would imagine that there are a couple of open source rails apps that would meet my

I am sure..again I am missing something, but I am trying to start a worker, when backgroundrb starts and it doesn''t seem to work. Here is my config/backgroundrb_schedules.yml file: feed_worker: class: feed_worker job_key: feed_worker_key worker_method: do_work trigger_args: repeat_interval: 20.minutes I even tried this from Rails controller: # def start_feed_worker #

Hi, I am trying to install fog which is required for cloud provisioner. > gem install fog -v 0.7.2 I am getting the following error Building native extensions. This could take a while... ................ ERROR: Error installing fog: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb creating Makefile make

Hi all i am following this like for basic paypal http://railscasts.com/episodes/141-paypal-basics and i got this error View: <%= link_to "Checkout", @cart.paypal_url() %> undefined method `paypal_url'' for nil:NilClass despite i have this code in my model called Card Cart Model: class Cart < ActiveRecord::Base def paypal_url(return_url) values = {

after moving my app to production, I am getting the following error in the apache error log. I am running on linode with apache and passenger. any help would be great, thanks, Jason [Tue Mar 22 00:18:04 2011] [error] [client 50.9.211.207] Premature end of script headers: [ pid=23638 thr=3063581552 file=ext/apache2/Hooks.cpp:821 time=2011-03-22 00:18:04.735 ]: The backend application (process