similar to: How to List Records in Descending Order?

Hi, I know there are other threads about this topic, but I''ve checked and none seem to help my problem. I''m trying to get a simple search to work on my Rails app, but I get a "Couldn''t find Recipe without an ID" error when I search. Here''s what I have: list.rhtml <%= start_form_tag :action => ''find_recipes'' %>

Hi, I ve just spent about three hours trying to figure this out, so any help would be appreciated. I ve followed these steps: 1. Downloaded Instant Rails 2. Unzipped it 3. Ran "InstantRails.exe" to configure it. (path is c:\InstantRails) 4. Went to the "Manage Rails Applications" area and chose "cookbook" app. 5. Clicked on "Start with Mongrel" 6. Mongrel

I''m doing very well with the Hibbs Rolling on Rails tutorial. I have an easy question for my personal notes. I''m coming up with a simple framework of steps for creating a basic database. It includes the following maxims to make original app creation easy: app_name = MySQL database name SQL_tablename = model_name model_name = controller-name Is this going to work for getting

Guys: Stuck at the mall today, and just had to crack Rails Cookbook, by O''Reily. It had a recipe for accepting dynamically created forms. The sample output looked like this (reconstructed): p params[:my_form] > ["1-1" => 0, "1-2" => 0, "1-3" => 0, "2-1" => 0, "2-2" => 0, "2-3" => 0,

Hi R users: I want to know how can I easily sort in descending order a whole data frame by one or several variables. Thank you very much for your help. Kenneth Cabrera krcabrer at perseus.unalmed.edu.co krcabrer at epm.net.co Universidad Nacional de Colombia, Sede Medell?n -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

I''m having a problem getting this example from the book to work: class Cookbook attr_accessor :title, :author def initialize @recipes = [] end def method_missing(m, *args, &block) @recipes.send(m, *args, &block) end end cb = Cookbook.new cb << recipe_for_cake cb << recipe_for_chicken beef_dishes = cb.find_all {|recipes| recipe.main_ingredient ==

I have tried to learn ruby on rails from scratch by going into a tutorial at the following website. http://instantrails.rubyforge.org/tutorial/index.html I followed the suggestions and encountered 3 problems so far. 1. Couldn''t start the Apache server. Error message "Port 80 was used by some other process." I over-came the problem by going into configuration and change the

I recently downloaded and extracted Instant Rails v1.4 on my Win XP sp1 machine. After changing and saving the windows host file and starting the cookbook app with Mongrel, browsing to www.mycookbook.com does not work. With Mozilla it displays ''redirecting to cookbook...'' but never loads. It is finding the index.html in the cookbook/public dir, but the redirect to

Total Ruby N00b here with a question about the Hibbs OnLamp tutorial. I''m trying to hook up to my cookbook database and I''m getting: ActiveRecord::StatementInvalid in Recipe#index Mysql::Error: #42S02Table ''cookbook.recipes'' doesn''t exist: SELECT COUNT(*) FROM recipes RAILS_ROOT: ./script/../config/.. My thoughts: I think I''m not actually

R Community, I've put together a website that I thought this mailing list might be interested in: http://www.r-cookbook.com It's a (free) community-driven content management system for R "recipes", or working examples. Some of the features of the site are code highlighting, recipe ratings, recipe comments, personal "recipe boxes" to save your favorite

Dear All, Is there any simple way to way to produce "rank", for a given list, but in a descending order? E.G: x = list(a=c(1,5,2,4)); rank(x$a); produces 1,4,2,3 However I am looking for a way to generate (4,1,3,2). It would be particularly nice if the proposed solution has all the niceties of rank function (like NA handling and ties.method functionality) TIA Manoj

Hi, Is there any simple solution to get ranks in descending order? Example, a <- c(10, 98, 98, 98, 99, 100) r <- rank(a, ties.method="average") produces 1 3 3 3 5 6 I would want this instead: 6 5 3 3 3 1 Note that reversing r doesn't work but in small examples. Thanks, -Jose -- jquesada at andrew.cmu.edu Research associate http://lsa.colorado.edu/~quesadaj Dept. of

I just did an upgrade to Rails 0.10.1. It seems to have broken my app. I get this error (nothing works): ActionController::RoutingError (No route for path: ""): /usr/local/lib/ruby/gems/1.8/gems/actionpack-1.5.1/lib/action_controller/routing.rb:258:in `recognize!'' /usr/local/lib/ruby/gems/1.8/gems/rails-0.10.0/lib/dispatcher.rb:32:in `dispatch''

Unable to get past Tutorial 1 in RubyOnRails On 29 April 2006 I met some one in a Microsoft sponsored developers? community gahering. I was told that ruby on rails is a free software, easy to use, and in no time will have my mind blown with all the wonderful prospects and possibilities. After almost a week, I am still unable to get past tutorial 1 and still unable to make any tutorials work

Hi all, Jennifer Davis from BayLISA has done us the service of already posting the presentation from this past Wednesday night: http://video.google.com/videoplay?docid=8202036065161263530&hl=en http://video.google.com/videoplay?docid=7740462681265962824&hl=en It''s about 2 hours total, and I can''t promise it''s any kind of amazing presentation, but I do a

How can I paginate a set of fields in descending order based on their created_on date? For example, in a blog app, you want the very first entry on the first page to be the most recent. I see that paginate has an :order parameter, but I don''t see any way of changing the direction of the order. Thanks, Jeff Coleman -- Posted via http://www.ruby-forum.com/.

THX. You are right!! a[order(-1*a)] [1] 110 23 4 3 2 Eryk coling wrote: > Hi, > > I know very little of R, but one suggestion could be to multiply your list > by "-1", then order, then multiply by "-1" again. > > Not very nice I realize. But it's "better than a poke in the eye with a > sharp stick" as a wise man once

Hi, I''m new to Ruby programming. I''m wnt thru the example by curt in onlamp and was stuck up in the midst of configuration. I''m getting the "No database specified. Missing argument: database." error when i tried creating a table recipe in cookbook db . My database.yml contains the following entries Development: adapter:mysql host:127.0.0.1

Dear 'HTH' R friends I have a small dataframe as given below. I need to sort this database based on date in a decending order. I am not sure whether I have defined the date column in a proper format. mydat<-data.frame(date = (c("1/31/2010", "2/28/2010", "3/31/2010", "4/30/2010", "5/31/2010", "6/30/2010",

Hi I''m new to this forum and new to Rails so excuse me if this is a daft question. I''m following the ONLamp.com tuturial and all has been well untill changing the template for the recipes. I have followed the instructions and added this code to the controller: class RecipeController < ApplicationController scaffold :recipe def list @recipes = Recipe.find_all end