similar to: checking for existence of object in views

I have two models, Stop and Station, they relate one station to many stops. Stop has_one :station Station belongs_to :stop So I can do @station.stops, but I cant do @stop.station, is this right? For example in the view I have: <% for @stop in @stops %> <tr> <td><%= @stop.station.name %></td> <td><%= @stop.time.hour.to_s + '':''

This is my first question to the Forum. I’ve set up these associations: class Playlist < ActiveRecord::Base … has_many :playlists_tracks, :dependent => :destroy has_many :track_ones, :through => :playlists_tracks, :source => :track has_many :track_twos, :through => :playlists_tracks, :source => :track end class Track < ActiveRecord::Base … has_many

I don''t know how to solve something about a project I''m doing in Ruby on Rails. I want to save the IDS of my 3 models to my table DETAILS between these, my BD is Mysql. ASIGNATURAS--MALLAS--NIVELS-------->ASIGNATURA_ID--_MALLAS_ID--_NIVELS_ID In the view MALLA, i list my asignaturas, mallas and niveles, and in the controller MALLA i want to save the arrays to my model

I have a Shipment class that is used to ship packages between Branches. However, when I try to have two belongs_to in Shipment called shipped_to and shipped_from I can''t seem to make it work. I can get it to display the form properly but when I select the branches and click save I get the following error... "Branch expected, got String" Any ideas? I have added some code

Hi all, I have 2 models with a standard 1 to many relationship. I''m also using REST on the two models and have added the appropriate code to the routes.rb file. scorecard.rb: class Scorecard < ActiveRecord::Base has_many :attributes end attribute.rb: class Attribute < ActiveRecord::Base belongs_to :scorecard end routes.rb: map.resources :scorecards do |scorecard|

Hi guys, I''m new to ruby and rails and I''m working on multi model forms, specifically 3. I''m using this http://guides.rubyonrails.org/getting_started.html as a start, and its got a 2 Model example but I cant seem to get the last one working. These are my models: Country name:string code:string (has_one :address) Address address_line1:string

Hi, I have this Test, User and Project models where every test belongs_to a project and project has_many tests. Test also belongs_to User as ''owner''. Then i followed railcast#139 to create nested route as - map.resources :projects, :has_many => :tests But somehow i get this error when url is ''http://127.0.0.1:3000/ projects/1/tests'' in

Hello all, I''m having problems creating a new record with has_many :through My application is quite complicated so I''ll try to explain it as easy as I can. I have a many to many relationship with Projects, IRBs and Reviews. Where reviews is the joined model. In the new project view, I have a link (add IRB). This will add an a list of IRBs to the new project form. I have visited

Let''s say I have the model class Reader and Magazine, connected by join model Subscription. It looks something like this class Reader < ActiveRecord::Base has_many :subscriptions, :dependent => :delete_all has_many :magazines, :through => :subscriptions validates_presence_of :name end class Magazine < ActiveRecord::Base has_many :subscriptions, :dependent =>

I''ve got a User class and an Employer class set up as follows: User.rb: has_many :employers Employer.rb belongs_to :user My tables are as follows: mysql> select id,first_name,last_name from users limit 5; +-----+------------+-----------+ | id | first_name | last_name | +-----+------------+-----------+ | 711 | Patrick | Stewart | | 714 | Larry | Davis | mysql>

I have a partial form "empresa". In new.rhtml of "empresa", I call the partial form of "usuario". Well, it is happening the following: When save empresa, and stop in validates, as much in "empresa" how much "usuario", appear only error message of "empresa", and not of "usuario". Because this happening? ps1.: I use flash_message

People, I have gone through the cookbook example: http://www.onlamp.com/pub/a/onlamp/2005/01/20/rails.html?page=1 and everything worked fine an a FC4/Postgres setup. I then tried to reproduce this success with something that would be useful to me - a library db using books & authors tables. The author list works but NOT the book list (unless I take line #17 out). I get this message:

Hello all, I would like to be able to update the "amount" of a certain item in me order list. The problem I run into is how to define the text_field element. @order is the current order, which has_many :order_item which in turn belongs_to :order. order_item has a field "amount" which should be modified... What I tried is this below, but I get a undefined method

Hi All, View ******** <tr> <td><b>Student: </b></td> <td><%= text_field "student", "fname", "size" => 40, "maxlength" => 40 %></td> </tr> <tr> <td><b>Program: </b></td> <td><select id="student_program_id"

Getting this error: SyntaxError in CompanyController#positionslist (eval):1:in `compute_type'': compile error (eval):1: parse error, unexpected tINTEGER Object::2 I could not find anything out about it (googling) and it''s not the clearest error message. Not sure if it''s related to an expected data type but that wouldn''t make sense. The only other thing I can

Hi, I am trying to add search functionality to may application. I am struggeling to pass my query to the controller and then show all my search results in another view. How would I do this? Model: class Advert < ActiveRecord::Base belongs_to :user def self.search(query) if !query.to_s.strip.empty? tokens = query.split.collect {|c| "%#{c.downcase}%"}

I am brand new to oop and am having a difficult time getting my head around some ruby stuff. In specific, I am trying to create a library style app that lists topics, articles and comments. I have a table called topics, a table called articles and a table called comments. My models, controller and view are all listed below. What I want to happen is to have the list view list each topic along

I have the following schema: class ClientsProject < ActiveRecord::Base belongs_to :client belongs_to :project end class Client < ActiveRecord::Base has_many :clients_projects has_many :projects, :through => :clients_projects end class Project < ActiveRecord::Base has_many :clients_projects has_many :clients, :through => :clients_projects end I have a form to

This my first Rails project. All my previous work was done it Perl, so I may be missing the Ruby/Rails obvious here. The site I''m working on needs to display archived programs. Some of the programs have multiple versions, all belonging to the same listing. As such, I''ve set-up an extra_files table related to the archive list. Displaying the extra files was trivial. However,

First, thanks to everyone who replied to my pluralization question from before! Today I was trying to do what I think is called a "chained accessor". I have an "events" table and each event has one user. Instead of seeing the id number for each event''s user, I''d rather display the names of users instead. I tried to do this: class Event <