similar to: Help on loop

Hey, I''m using the attachment_fu plugin to upload images on the file system. To retrieve them I''m using: image = "/home/rajeev/Desktop/logo/logo/public#{icon.public_filename}" which is the same as: "/home/rajeev/Desktop/logo/logo/public/icons/0000/0005/green_nature_on_white.jpg" Have can i do this in a shorter way by using RAILS_ROOT? I have tried this

Dear List, I work with multilevel data from psychological group experiments and have frequently encountered a situation for which I haven't found an elegant solution: I need to assign the value of a specific group member to all members of the group. For example, I have a group leader (identified by a binary vector) and some attribute for all group members. I want to create a new

Hi all i copied rmagic gem in my local system cd rmagick-2.12.2.gem bash: cd: rmagick-2.12.2.gem: Not a directory *[root@localhost shyam]# gem install rmagick --local* Building native extensions. This could take a while... ERROR: Error installing rmagick: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb checking for Ruby version >= 1.8.5... yes checking for gcc...

Can someone explain why the following happens? --- :> quote(some.name) some.name :> bar <- structure(quote(some.name), class = "foo") :> quote(some.name) Error in print(some.name) : object 'some.name' not found :> bar <- quote(some.name) :> quote(some.name) Error in print(some.name) : object 'some.name' not found :> bar <-

Hey All, Two questions. Firstly, what is the difference between create and create! I see that create is document in the api http://api.rubyonrails.org/classes/ActiveRecord/Base.html#M002269 What is the difference between the two of these functions and where is the create! function defined. Also, What are the differences between these two calls? a) SomeModel.create!{ :property_a =>

I have a question regarding best practices around module and plugin testing for rails applications. In our application we have created several plugins that extend ActiveRecord::Base with class methods, that when invoked in a model add behavior to that model. For example ... class SomeModel < ActiveRecord::Base adds_some_cool_behavior adds_another_wicked_sweet_behavior end My

I am having a problem with ruby''s sort_by function. I want to sort a list of parent model objects based on the children of the parent models. Normally you might say sortedList = modelList.sort_by { |model| model[''someAttribute''] } What I am tring to do is sortedList = modelList.sort_by{ |model| model.children.find(:first, order=>"price desc" ).price}

Hello, This is probably a silly question but looking at "api.rubyonrails.org", I can''t seem to figure out which method I should be using ... I want to execute an sql statement, like "truncate table BLAH" from within one of my rails app ... What''s the "right" way to do this? Thanks, /B -- Bruno Mattarollo <bruno.mattarollo@gmail.com>

Is there any scalable alternative to iterating all the records of a certain model? #find_all seems to load everything into memory. With 500.000 records it will be a swap storm. Pedro.

Hi! I am looking for a solution for the following problem: Some of my models share some attributes and also was in need for some extra features, so I created a class "RecordWithFeatures": ----------------------------------------------------------------- class RecordWithFeatures < ActiveRecord::Base # @Override def self.descends_from_active_record? superclass ==

I have a simple question when to the synchronize method in the Mutex class. Now that backgroundrb has allow_concurrency = true there is no need to synchronize database calls in threads. The question I have is lets say I have a simple method in my worker as follows: def some_method SomeModel.find_all each do |obj| obj.some_count += 1 obj.save! end end It accesses the database, but

Hi, I have a requirement, whenever a user comes into the conference, it has to announce the user name to all the person who are all available in the conference. I have used Meetme(,di) where i is to announce the user leave/join with review. I user used I also, which is to announce the user leave/join with out review. In both the above cases, it is prompting the user to say their

Hello, I need to access an mirrored database with one read and one write cluster. Is there a way to tell a model to use two connections? So that all updates etc go to the write database and all read from the read one? This is a fixed set up I can not use MySQL 5.x stuff and additionally i get a token on write, which can be checked on read (and wait for replication) if new data is needed. I

I had updated clam antivirus recently (with YUM) and since then the following error is appear when my cron job runs The cron job and the output is list below: /usr/bin/freshclam --quiet -l /var/log/clam-update.log ERROR: Parse error at line 44: Option AllowSupplementaryGroups requires boolean argument. ERROR: Parse error at line 76: Option FixStaleSocket requires boolean argument.

&nbsp; Hi All, &nbsp; I am Rajeev. I have download centOS 5.1 i386 files for installing Linux. I tried my ways but my DVD is not getting recognised while booting. I have windows XP SP2 32-bit. Let me know the files that need to be burned for installing centOS 5.1 i386. &nbsp; Queries : 1. Whether I need to burn the files in CD or DVD? 2. I have download&nbsp;9 iso files, 3 torrent

I''m going to be generating thumbnails from user uploaded images. I''m looking around at the libraries available to do this sort of thing and there are three that look promising. ImageScience -- http://seattlerb.rubyforge.org/ImageScience.html Mini-Magick -- http://rubyforge.org/projects/mini-magick/ RMagick -- http://rmagick.rubyforge.org/ It looks like a lot of people are

I need to install Centos on a machine with 3tb raid disk. (3 ware raid card) Could someone in the list suggest a utility for partition this disk. I would like to have the whole disk in 1 partition and format it for ext3. The default partitioning utility doesn't do this. The OS sits on another SATA disk and each time during the installation it doesn't format the full disk which is 3TB.

I have an app that requires me to define a class variable (actually an array) in a controller and then access it from within a view. It seems that the class variables aren''t working right. Here is an example of what I''m trying to do. class DisplayController < ApplicationController @@thumbnail_array = Array.new ... def some_method @@thumbnail_array = SomeModel.find_all

Dear all, Does anyone aware of any utility to copy files which are created or modify form a specific date ?. Thanks Rajeev R. Veedu -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080609/ae761b2c/attachment-0002.html>

Hi there, I''d like to use RMagick to watermark an image in the tmp directory before Attachment_fu saves it to Amazon S3. I took a look at the callbacks available in attachment_fu. There''s an ''after_attachment_saved'' method but this would be too late, and a ''before_thumbnail_saved'' but this is no good because it''s for thumbnails. I