similar to: newbie - HABTM confused...

All, If I have a table that has several discrete fields that all point to the same associated field, how do I model it. Specifically, If I have a project table that has 2 fields: specifying_company, and responsible_company. And one table of associated companies, how do I do the :belongs_to / :has_many stuff ie. For a given project company A may be writing the spec, but company B may be paying

Hi -- My book "Ruby for Rails" is now being released one chapter at a time through the Manning Early Access Program, with the whole book due to appear on May 1. If you''re interested, see http://www.manning.com/books/black (I guess I could have just sent my sig with no body, but anyway :-) David -- David A. Black (dblack@wobblini.net) Ruby Power and Light

Hi, I am working thru the Ruby for rails book. On page 30 David Black talks about running erb from the command line i.e. $ erb erbdemo.rb just as you would a normal ruby prog ($ ruby erbdemo.rb) but when I try to do this I get command not found. How do I make this work? I am running Linux (Ubuntu Breezy) Regards, Paul

Hi -- I''m on the road, so I haven''t laid eyes on it yet -- but word on the virtual street is that "Ruby for Rails: Ruby techniques for Rails developers" is now out in paper. It will probably take a little longer to trickle to your neighborhood Barnes and Noble... but you can order it now from the publisher. See http://www.manning.com/black. And trickle it will, too.

I have a loop that I iterate through in my view. <% coll.each do |itm| puts(itm.value) end %> How do I render the itm.value without using a <%= %> tag? Should puts not work? Joerg P.S. There is a good enough reason for me wanting to do this :-) -- Posted via http://www.ruby-forum.com/.

hello. first things first - I am new to ruby on rails (ruby, too), so I''m figuring this is just a basic newbie error. I''m creating a basic photography website. And I have two tables with a relationship: photos: - id (set up as PK) - title - shutter - aperture - date - the_order ...etc photo_comments: - id (set up as a PK) - photos_id (set up as a FK) - author - date -

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 ==

Hi all -- The second printing of "Ruby for Rails" is happening soon. If you''ve spotted any small errors, let me know... like... *very* soon :-) (I want to know about large errors too, but those fixes won''t make it into this printing :-) Thanks! David -- David A. Black (dblack@wobblini.net) Ruby Power and Light, LLC (http://www.rubypowerandlight.com) See what

I''m using Rails-1.1.4 with Ruby-1.8.4 So let''s say I have 2 model classes: class Item has_and_belongs_to_many :things end class Thing has_and_belongs_to_many :items end i = Item.new i.things << Thing.new( :value => "Something").save i.things << Thing.new( :value => "Something Else" ).save i.save Fine, now I have two records in the

I''m trying to figure out an elegant way to do this: I have the following three tables: people, employer, employees And consequently the following three models: class Person < ActiveRecord::Base end class Employer < ActiveRecord::Base has_many :employees end class Employee < ActiveRecord::Base belongs_to :person belongs_to :employer end I want to be able to say:

Hello all -- And a special greeting to those of you who were at RailsConf 2006 in Chicago. You know how great the event was, and how great the European Rails Conference is going to be in London in September! We''re now accepting proposals for talks at the European Rails Conference, to be held September 14-15 in London. Accepted speakers will get free admission to the conference.

In an early section on Action View, showing code being put directly into the rhtml file: <% require ''date'' DAY_NAMES = %w{ Sunday Monday Tuesday Wednesday Thursday Friday Saturday } today = Date.today %> <h1>Hello, Dave</h1> <p> It''s <%= DAY_NAMES[today.wday] %>. Tomorrow is <%= DAY_NAMES[(today + 1).wday %>. </p> I get this

Hi, I have a class called Outlet which has_many Jacks. Apart from internal id, each jack is unique by the attribute ''color''. I''d like to iterate through each Outlet, and be able to output data for a Jack of a certain color. Say, I want to access the orange jack for the current outlet: <td><%=h outlet.jack.color[''O''].ip_address

This may be a more generic Ruby question, so I''m going to ask on the Ruby forum, but I''m trying to figure out if there is a way to pass in the string value of a variable as the name of a method. For example, I would like to do something like: def sort_obj_by_uid(objects,@attr) @tmparray = Array.new @tmphash = Hash.new for object in @objects if !

Hello everyone -- Ruby Central, Inc. is pleased to announce the first official.... EUROPEAN RAILS CONFERENCE September 14-15, 2006 TUC Congress Centre London, UK Sponsored by Skills Matter Ltd. (UK) Speakers scheduled to appear at this exciting event include: * David Heienemeier Hansson * Dave Thomas * Kathy Sierra * Scott Baron

Hi all. Got a stupid-simple question about associations. I have two models - school and course. There are a fixed number of schools (set up in the migration). Each course is assigned a school and a school will be associated with multiple courses... How do I set up the associations? Do (can) I have School :has_one :course and Course :has_many :schools? Does the schools table then get a course_id

hello, On page 49 of the beta version of Ruby on Rails: Up and Running, the book suggests to download a zip file containing everything that has been done up to that point, and a create_tables_with_data.sql file. The book doesn''t have the link, and I couldn''t find it in the book site. Does anyone know where to get the files? This is a very good book. Thanks. -- Posted via

Can I set an application wide instance variable that is available for all actions...and their views? eg. class ApplicationController < ActionController::Base @current_user = User.find(session[:user_id]) end and everywhere I can call @current_user.id and I can get that object? Even down in the views? I could not get this to work... Thanks in advance, Jeff -------------- next part

I have this in a model: has_one :next, :class_name=>''WorkPart'', :foreign_key=>''next_id'' And it causes this error: compile error /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.13.1/lib/active_record/deprecated_associations.rb:83: void value expression

Hi -- Registration for RubyConf 2006 is still scheduled to open on August 2, in the early evening Pacific (US West Coast) time. Also, there''s more info at http://www.rubycentral.org/conference (e.g., the fact that this year we''re only taking credit cards, etc.). David P.S. Any LA area Rubyists around? I''ll be there this week doing Rails training. --