similar to: ActiveRecord associations

Hi folks, Newbie with ruby on rails but very excited by the features provided by the framework ;) Suppose I''ve got a table ''Company'' and a table ''Category'' Company belongs to a category but I will retrieve the Catagory in the Company list? It seems that I don''t have the basic ruby wau of thinking to get this easily. Can someone help?

Hi there, I''ve been working on this for awhile and have finally decided to ask for a little guidance.I have a slight problem trying to save a selection. I have two models: A "Posting" has_many "Categories", and a "Category" belongs_to one "Posting". With that said, in the posting model I have "has_many :categories" and within the

Consider the following scenario: Book has_and_belong_to_many Category. In other words, a category may have a lot of books, and a book can have more than one category. What is the best practice to query all books related to some specified categories. For example, if I have following books "From Java To Ruby" - Category: Java, Ruby "Ruby Programming" - Category: Ruby

I''ve got a model, "category" and another model "subcategory." Each subcategory belongs_to a category, and a category has_many subcategories. What I need to do is set it up so that I can search Category and Subcategory with one .find call. So: Category.find(:all, <etc) will find categories and subcategories. Now, I believe this can be done by making

i think there ara two ways of relate products and categories , basically i want to fix one product(e.g hp dv7....) to some categories (notebook,17"notebooks...) i made a table named categorization(incuding category_id,product_id fields) then in models i write these codes below class Product < ActiveRecord::Base has_many :categories, :through => :categorizations

I have these tables set up like this: listings has_many :states <field>state_id [int] <other fields.... .............. .............> states belongs_to: listings <field>name <other fields.. ............... .................> In my view I have <%= listing.name %> have also tried listing.state_id.name , that didn''t seem to do the magic either. This

I have two models, Category and Article. Article belongs_to :category and Category has_many :articles. I''d like to be able to find all non-empty categories. What''s the best way to do that? Pat

I really hope this is not a bad question (as in he''s abusing the list). However I could use a little direction (even though I''m reading books, tutorials) Right now I''m getting a undefined method `category'' for 4:Fixnum The specific lines from the rhtml file are: <td><%= link_to position.category_id.category, :action => "show", :id =>

I have following tables with following models: users(id, role_id) *has_many :entries* categories(id, category_name) *has_many :entries* entries(id, category_id, user_id) *belongs_to :user, belongs_to :category, has_one :storage* storages(id, title, content, entry_id)* belongs_to :entry*, *has_one :vote* votes(id, count, storage_id) *belongs_to :storage* Now,

2 tables Items and Categories Categories (id, name) Items (id, name, category_id) Category_id can be null, and there are Categories that has not an Item. -- Posted via http://www.ruby-forum.com/. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email

Hi Gurus, I''m trying to tackle a drop down list. I have category and item dbs, and they''re wired up with category has_many :items and item belongs_to :category, and an item has a category_id. I have this code in my new/edit.html.erb for item: <%= f.collection_select :category_id, Category.find_main, :id, :header, {}, :multiple => false %> And a pretty drop down list

I''m trying to wrap my caffeine soaked brain around has_many :through following along at: http://rails.techno-weenie.net/tip/2005/12/23/teaching_your_blog_model_new_tricks_with_has_many_through I think my models are a little more complex than what fits this narrative. I have a directory of members, each member can belong to multiple categories. The category table references itself

My database is set up as Categories > Things associated by category_id and has_many and belongs_to. How would I go about listing all the categories and under each Category is it''s children? Is there an easy rails way to do this - preferably without using acts as tree? Any help is appreciated - thanks! -- Posted via http://www.ruby-forum.com/.

I''d like to announce acts_as_habtm_list plugin for rails. acts_as_habtm_list is a Ruby on Rails plugin, that can manage ordered lists through a join-table. It is providing almost the same Api as acts_as_list. The position column has to be defined in the join table. You can find additional information at: http://www.inlet-media.de/acts_as_habtm_list/ Install it executing this command

I have an archive that can have 0 or more extra files associated with it. I would like to be able to edit the associated files info on the same page as the archive info. Listing the extra files info to the edit form is simple enough, but How do I form the text input fields for easy (or automatic) pick-up in the update? Or am I barking up the wrong tree here? -- Posted via

Ahoy, I was able to follow the tutorials and build a simple to-do list program with Items and Categories and have the related tables link up w/ the default "scaffold :Items" command plus custom defenitions. Then I erased all of that and tried rebuilding the program using the ruby script/generate scaffold Item (and category) command. Now the templates look like " <% for

Can anyone explain this oddity to me? Given two classes as follows: class Question < ActiveRecord::Base belongs_to :category end class Category < ActiveRecord::Base has_many :questions end I get the following: >> q = Question.find 6789 => #<Question:0x37e9e70 @attributes={"id"=>"6789",

People, In the cookbook eg, categories has_many recipes but in a book eg, book has_one description - doesn''t that mean that the id of the description should be the same as the id of the book (instead of having it''s own "description_id" in the book table? Thanks, Phil. -- Philip Rhoades Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275) GPO Box 3411 Sydney

hi, i have this in my code Article.find_by_contents("#{searchstring} +city:#{passedincity}") well that returns to me only articles that belong to whatever the user selected in city. now is it possible to search the grandparent? for example class country has_many states class states has_many cities belongs_to country class city belongs_to states ...... i would like to search

I''ve tried pulling this together from examples in the book, searching the web and this list, but so far I''ve not been able to get it working just right. My table is a categories table with id and category fields. My form has the following: <td><%= select(''category'', ''category'', @categories = Category.find(:all, :order =>