similar to: Error when trying Rolling with Ruby On Rails

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

Hi I am a newbie to Ruby on Rails, but experienced in programming. I am trying out Rolling with Ruby on Rails article by Curt Hibbs on onlamp.com. I have encountered following error: Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id I searched the archives of the list and found that similar question was left unanswered. I do understand from

Hi Bill, No I am not using Instant Rails. >There are lots of variations possible. Typos and capitalisation represent the largest proportion of errors I personally have made. Thanks a lot....solved the problem. Changed recipes (plural) in controller file to recipe (singular). That teaches me to pay *real* attention to casing. (forgive me, I am from the VS and VB world :-) >Actually,

I have the following ActiveRecord objects: class Recipe < ActiveRecord::Base has_many :ratings, :dependent => true . . . end class Rating < ActiveRecord::Base validates_uniqueness_of :created_by, :scope => :recipe_id belongs_to :recipe, :counter_cache => true . . . end The created_by field on Rating is implemented as a "magic" field similar to this:

Still Stumbled on First things in trying RubyOnRails http://www.digitalmediaminute.com/article/1816/top-ruby-on-rails-tutorials http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html http://instantrails.rubyforge.org/tutorial/index.html http://rails.homelinux.org/ I had tried the first of the top 12 tutorials and got stuck after adding a new field ?category_id?in the table recipes,

hi i am using active admin for my app i have a partial with a drop down list where the menu and recipe are populated this page is to group the recipe in a menu _menu_recipe.html.erb <%= semantic_form_for [:admin, @menu_recipe] do |f| %> <p> <%= f.collection_select :recipe_id, Recipe.all,:id,:name,:prompt => true%> </p> <p> <%= f.collection_select :menu_id,

Okay. So I have this simple site, which includes Recipes and then Comments. I want ppl to be able to comment on the recipes, and so I made comments have a recipe_id as it''s foreign key etc. I''m not that much of a noob to not know that stuff. When I click on a recipe, and then make a new comment and click ''submit'' (for the comment) it submits it, but it still

I''m experimenting with Rails on the Recipes example first before I dive into applying it to my intended application. I''m exploring which will be more work: to rename all the primary id''s in the legacy database, or to work around the fact that the primary id''s are not called ''id'' within RoR instead. I''ve been successful in using a

A course has many lessons and a lesson has many topics. A topic can have a recipe or vice versa, a recipe has many topics (optional). I need to come up with the most efficient way of querying the database to find those topics belonging to a course (via lessons of course) which have a recipe (in other words recipe_id is not null for this topic record). Simple but challenging :) Thanks for your

Hi, I use link_to_remote to create a link to trigger an ajax, things work fine, a new rhtml is created, however, the newly created rhtml doesn''t replace my old zone, it shows instead on top of my old zone...Does someone know why??? my code is like <table> <tr><td colspan="2"><a href="#" onclick="new Ajax.Updater(''zone1'',

I am working with the pmt function in the {mnormt} package, and i am getting negative values returned. the following is an example of one of my outputs: pmt(x = c(3.024960, -1.010898), mean = c(21.18844, 21.18844), S = matrix(c(.319,.139,.139,0.319), 2, 2),df = 42) # -6.585641e-18 Any help on why i'm getting negative numbers would be very much appreciated. THanks! -- View this message in

Hello everyone! Ive been on rails for the last month or so and really enjoyed this framework. However its very hard to find documentation on how to do things right! For example every beginner after a while realizes that having similar CRUD actions in every controller and views for them is not DRY at all! Few days ago I found http://dereksivers.com/rails-shared-controller.html I quite like his

In what R package(-s) can I find the entire set of financial functions that you can find in MS-Excel such as PMT, PPMT, FV and IPMT? Ciao Vittorio

Hello, I really don''t understand how to use in_place_editor_field In my controller : class Admin::CategoriesController < Admin::BaseController in_place_edit_for :category, :title def list @categories = Category.find_all end end In the view list.rhtml <% @categories.each do |c| %> <td><%= in_place_editor_field :c, c.title %></td> # snip <%

Hello, I have a question about IMAP : I want read a IMAP mailbox in my application. I have found 2 pages about this : http://wiki.rubyonrails.org/rails/pages/HowToReceiveEmailsWithActionMailer/versions/203 http://www.codefetch.com/search?qy=login&lang=ruby But, Rails don''t want use ''net/imap''. So I can''t =( Thank you for your help pmt -- Posted via

I Want to run my ruby on rail application through address bar. i.e like: http://localhost/rail_program/first.rhtml. when i trying this it only executes html part but not executing rail part. Here is the code: <html> <head> <title>eruby example</title> </head> <body> <h1>Enumeration</h1> <ul> <%(1..10).each do|i|%> <li>number

hi! im implementing a login system for a messageboard. tooked from a book. pretty simple. everythings works great, but in the example the idea is, when i want to create a new message, the author name shall be tooked from the session[:user] def create params[:message][:date] = Time.now params[:message][:author_id] = @session[:user].id #here!! @message =

Follow the code :- class Sample def bar p method(__method__).receiver # only `self` would do the trick. end end n1=Sample.new # => #<Sample:0x13bc648> n2=Sample.new # => #<Sample:0x13bc630> n1.bar # => #<Sample:0x13bc648> n2.bar # => #<Sample:0x13bc630> But this is my try. I am looking for any method is available in Ruby,into which say if I pas

I receive the following error: Called id for nil, which would mistakenly be 4 -- if you really wanted the id of nil, use object_id when trying to use the in_place_editor_field tag: <% for employee in @employees %> <%= in_place_editor_field :employee, employee.fname %> <% end %> My model is called Employee and is being populated from a controller method employees_list:

This patch updates dbomatic, taskomatic and host-register to use the new C++ wrapped ruby QMF bindings. It also fixes a couple of bugs along the way including the 0 cpu bug for host-register. This is a compilation of work done by myself and Arjun Roy. Signed-off-by: Ian Main <imain at redhat.com> --- src/db-omatic/db_omatic.rb | 111 ++++++-------