search for: association_basics

Hi, Does anyone know where I can find a full step by step tutorial on Many to Many Relationships with Rails or can describe the steps in inserting data into the join tables, displaying the connections, etc.. - I don''t only need the model, but all the steps that you would use in the MVC architecture to make it work. I am a new to Rails and I cannot find a complete tutorial on all the

...e? class Reader < AR::Base belongs_to :post belongs_to :person end class Post < AR::Base has_many :readers has_many :people, through: :readers end @post.people << Person.new so, basically this is not working: http://guides.rubyonrails.org/association_basics.html#has_many-uniq thanks. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Core" group. To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-core+unsubscribe@googlegroups.com. To post to this group,...

I got a application like following. A board has many posts All posts belong to a board I try to destroy all the posts under a board when I destroy the board. My destroy function is following. def destroy @board = Board.find(params[:id]) @post = @board.posts @post.destroy @board.destroy respond_to do |format| format.html { redirect_to(boards_url) } format.xml

hi I amd tanizawa. I had problem. I can not get main.name value from below sql. "find_by_sql ''select main.id,main.name,sub.name from main left join sub on sub.id = main.id''" Please teach me how to get borth name value. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the

Hi, I am very new to rails.. I am having hard times to understand the ActiveRecord associations.. I tried http://guides.rubyonrails.org/association_basics.html .. But it is not for beginners. :) Is there any good tutorials, to understand the concept? Thanks -- 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 unsubscribe from this group a...

Hi. I am currently developing a small course system for student and teachers. The system is divided in sections and sections have many messages, comments, documents and schedules. Pretty easy to set up using ROR, just add some belongs_to and has_many relations. But everything becomes much more complicated when the section items (message, comment and so on...) all has comments. And they can also be

Hi All, I''ve been trying to figure out what''s wrong here for a little over a day and figured i''d reach out to the ROR list. A pastie explains the code a bit better than directly in email: http://pastie.org/private/mvu0zr1xm18bsk6nfbyama Basically i have an Artist, and he has many Songs through a join model called Releases. An artist can be "featured" on a

Hello, I am new to rails and I need a little help getting started with a simple association. Here is what I am trying to do. I have a model, message, which has text and a user (do not need to worry about associating users to messages right now). These messages come in and I would like to create a response for each, which itself is a message. Then I would like to create a transaction paring these

In their example, def create @product = Product.new(params[:product]) @details = Detail.new(params[:details]) Product.transaction do @product.save! @details.product = @product @details.save! redirect_to :action => :show, :id => @product end rescue ActiveRecord::RecordInvalid => e @details.valid? # force checking of errors even if products failed render :action

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

Folks Can a model just have a belongs_to only? or do you have to have a belongs_to and a has_many or has_one on the other model? -- 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 to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To

Hey everyone... I''m just getting my feet wet with relational databases using RoR models. The software I''m putting together relies on car parts. Originally I had the database set up as follows create_table :parts do |t| t.column :year, :string t.column :make, :string t.column :model, :string . . . end However, I now realize it''s much better to do it using

Hi, I’m an amateur learning rails and could use some help… I created a join table “pictures_questions” and append to it in the following way: @picture = Picture.new(params[:picture]) … if @picture.save @question.pictures << @picture Everything works fine but honestly I think I got this working by sheer luck and trial and error. I have 2 questions: 1. I do not understand the

Hi, So i have users in the system and i have topics. Topics also have_many subtopics. What is the cleanest way to setup the AR relationships if a user can either have_many topics or subtopics ? Its basically a dual select box dropdown, where the second dropdown is optional. Is the best to have user_topics, and user_subtopics tables and manage that way ? or combine into one table with STI

I have user model and referral model. Referral model has user_id as field. Now when a new user is created, I need to call referral#create as well and pass it the id of the newly generated user to user_id of referral model. How can I do that. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to

Hi all, I''ve got a feeling from other posts that this should be very simple, but believe me I''ve looked around many tutorials / blogs, but still cant even get the most basic setup working with paperclip and s3. I am however pretty new to Rails, so could be doing something dumb. ------- Firstly, to install and use paperclip and aws-s3 I''ve got them both in by Gemfile:

Hello All, How do I change the heroku database( already existed ) table id to start from say 1000? I tried with a fresh database on local & it works with this:- *execute "ALTER users orders AUTO_INCREMENT = 1000"* Thanks, Avinash -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To unsubscribe from

Am interested in the new PATCH method that will be included in Rails 4, but have a question/concern, and forgive me if I''m misunderstanding it. So, if the request parameter _method is set to "patch", the update is processed as a patch. But, let''s say you have a model called Airplane and Airplane has a collection of FlightCrewMembers which it

Hi, I''ve got a Rails app working that includes two two classes, etc.: Expense & Vendor. I eventually learned that the mental concept I had of their relationship should be express in Rails as: class Expense < ActiveRecord::Base; belongs_to :vendor; end class Vendor < ActiveRecord::Base; has_many :expenses; end