similar to: Problems with nil object

= Linee guida per la modifica del Wiki di CentOS = Questa pagina contiene alcune linee guida per la modifica del Wiki. Poich? queste linee guida sono in divenire, ricordatevi di tornare su questa pagina ogni tanto. == Linee guida riguardo al markup del Wiki == * Usare link relativi invece che link assoluti o link liberi. I link relativi devono avere la forma seguente: {{{[:Percorso:Testo

Warning: I am as green as #00FF00 with rails :-) I have an rhtml view that shows a survey: /views/survey/show.rhtml. I have a Survey model, helper and controller. I''m using the acts_as_commentable plugin to collect comments, and trying to save user comments from users who have taken a survey (don''t ask -- it''s just a test). To save the comment, I need the id of the

class Post < ActiveRecord::Base validates :name, :presence => true validates :title, :presence => true, :length => { :minimum => 5 } has_many :comments, :dependent => :destroy has_many :tags accepts_nested_attributes_for :tags, :allow_destroy => :true, :reject_if => proc { |attrs| attrs.all? { |k, v| v.blank? or v.nil? } } end rails c

Hi, I will admit I am very new to ruby and I am trying to do something that is not in any tutorials I have found. If you see a more conventional way to do some of the things I am trying to do, please let me know. What I am trying to accomplish. People can edit the comments on the same page as the listing of posts. The problem is that when I go to create the comment, it is not getting associated

With the help of several heroes here yesterday I beat my way into a working solution to adding comments to one or more models in my application using acts_as_comentable. Great plugin, but my implementation is lame. I need enlightenment. I have users who log in. For several views I want to let them add comments. Enter act_as_commentable which does just this -- it''s polymorphic, so you

hello all! I''m in deep shit for my exam tomorrow! :) as you can see, I want to search with Tesi.search with all params arriving from form ''se'' so I need to add the @tmp result to @tesis collection if not empty.. If I use an array for @tesis I can push @tmp but then I got errors in .rthml If I use @tesis = Tesi.new I can''t push (I don''t know how

Hello Folks, I am starting out with RoR and just browsed through Dave''s book ? couldn''t stop reading. I started building a prototype to get better hands on experience and I have run into two simple issues that I am hoping will be a quick answer for some of you experts out there. *Issue 1:* >From within a "companies" controller and list_companies.rhtml view

First public release of Production Log Analyzer! Download it at: http://rubyforge.org/frs/?group_id=586 The Production Analyzer lets you find out which pages on your site are dragging you down. pl_analyze requires the use of SyslogLogger (included) because the default Logger doesn''t give any way to associate lines logged to a request. SyslogLogger gives you many other

I want to return an int from a find_by_sql call. But when I use that result to compare to another count the error tells me I have an array. MODEL: # Returns the number of comments in a specified post def self.find_count(post_id) find_by_sql(["SELECT COUNT(*) FROM commments WHERE post_id = ?", post_id]) end CONTROLLER: def test @post =

Hi All I''m getting the following very strange Ajax error and I''ve searched Google, this group and various other places to no avail. So I''m desperately hoping someone here can help. Whenever I try to execute any Ajax call whether as a form request or a link_to_remote link I get the following error: ------------------- FORM REQUEST ------------------- [2007-01-21

Dear Masters, I'm driving crazy with the lowess() function.... my intent is smoothing confidence intervals for predicted y values in a linear model lm() setting since in the predict() function there exists an option for predicting NA values, I instead encounter problems when I fit a missing values x variable to the predicted terms.....,impossible task!!! I've been banging on my head

I''m having a bear of a time getting my cached pages to expire. Maybe one of you guys can help me out. I''ll show my sweeper and then my log to show that it "should" be working. class PragmaticSweeper < ActionController::Caching::Sweeper observe Comment def after_save(comment) expire_page(comment.post_id) end private def expire_page(post_id)

Here's a propsed heavy-duty solution for your UTF-8 problems. I'm including a patch in this message, but I'll put the new files on my web site at http://rano.org/tmp/xiph_files.tar.gz I've tested this by running vorbiscomment with and without -DHAVE_ICONV=1 in vorbis-tools/share/Makefile. It seems to work. Changed files: acinclude.m4: Add a test for nl_langinfo(CODESET). This

Hi, Thanks for a wonderful Getting Started with Rails. I am up to the last section and just added the comments part. So while testing and looking over comments_controller.rb; I see the reference to post_comment_url calll where is this defined. Below is the message I am getting. Thanks ActionController::RoutingError (post_comment_url failed to generate from {:post_id=>#<Post id: 1, name:

I''ve been sitting on an ActiveResource patch for a few weeks, waiting to get some feedback from David. But, I see other folks like Jeremy are starting to use it, so I committed my patch: http://dev.rubyonrails.org/changeset/4890 It gets all the basic operations in working order, and adds support for prefixes. I wasn''t quite sure how to pull this off. Right now, I''m

I''ve been banging my head against the wall trying to update a table (add/delete rows) using Ajax. It seems simple enough but just doesn''t work for me. I can get it to work using DIVs instead of a table, but doing the layout with DIVs is much more cumbersome and I know it works for others with a table (though I haven''t been able to find an exact example code anywhere).

"rick" has given AR/Oracle some love, but it''s still unhappy... http://dev.rubyonrails.org/changeset/5310 ------------------------------------------------------------------------ r5310 | rick | 2006-10-16 08:42:55 -0700 (Mon, 16 Oct 2006) | 1 line Fix has_many :through to add the appropriate conditions when going through an association using STI. Closes #5783. [Jonathan Viney]

Dear Sir/Madam, Since a few day now I try to use the command "polygenic" from the GenAbel package. However, I keep bumping up against an error message: "Error in polygenic(Testo, kin = kinship, data = data1) : dimension of outcome and kinship.matrix do not match". My data exists of 1240 individuals with 74 markers. It mainly consists of small families (2 or more brothers,

I''m working on a system that has a series od "bids" associated with "posts". Vurrently when a bid is placed I have it creating a new row each time in the "bids" table. The bids table has id, post_id, and user_id. The logic is to check to see if a bid already exists with a given post_id and user_id. If it does, then just update the "amount"

after doing a bunch of reading I have finally sat down to create a simple app to dirve home a lor of the concepts to which have been read. So I figured a simple blog app is the best way to do it. The bad thing is that I am already hung up when creating replies to a blog posting. I can''t figure out how to insert the post_id value into the reply table. When creating a reply the user is