similar to: STI vs Polymorphism

Hi all, I need to model simple typed polymorphic relations: ''John'' [''works_for''] ''Bill'' ''John'' [''speaks_for''] ''Microsoft'' ''Microsoft'' [''hold_shares_of''] ''Apple'' I''m having a hard time combining : - S.T.I.

Hi, I have had several emails from people thanking me for the following documention patch. http://dev.rubyonrails.org/ticket/6040 Any chance this could be commited so more people can find it? Peter

I have two models: testamonial photo (has_attachement) testamonial has_one photo The issue is when do this: @testamonial = Testamonial.find_all_by_id(id) I get "undefined method `photo'' for" in my browser?? BUT here is the big kicker.... If I do @testamonial = Testamonial.find(:first) everything works fine and the image is show!.. (find :all works too when I loop

Dear, I am using the R package SNPRelate but I found an error when I run the following command. Do you know what might be the problem? Thanks in advance. > vcf.fn <- system.file("extdata","str.vcf",package="SNPRelate") > snpgdsVCF2GDS(vcf.fn,"test.gds") Start snpgdsVCF2GDS ... Extracting bi-allelic and polymorhpic SNPs.

Hi, lets say I have a a table, "Linkings" that I am using for polymorphic associations. One of the associations is to the "person" table, and there are several other associations. "Person" has 2 types, "slacker" and "suckup". It is modelled as such: class Linking < ActiveRecord::Base belongs_to :person belongs_to :linkable, :polymorphic

I would like to associate a ‘product’ model with 3 models inherited from ‘image’: part, action and accessory. I have it working with Has_many :through relating products to images through attachments, I then have to determine the ‘type’ of the STI extension. This means i have to go product.images. While this is ok, i can see it getting tricky when i want to go products.images <<

I am having trouble with an many to many polymorphic association with STI involved. The problem is described clearly in the following StackOverflow question, so I will leave this thread short: http://stackoverflow.com/questions/6582074/activerecord-has-many-through-polymorphic-associations-with-sti I am posting here hoping to get advice/direction/a solution for this, as I''ve so far been

I''m stumped on how to get past this. It''s Rails 2.0.2. I have a class, Show. Using STI, I''m using that as a base class, and have DayShow and NightShow that inherit from it. ### class Show < ActiveRecord::Base end class DayShow < Show end ### In my shows/edit.html.erb, I have: <% form_for(@show) do |f| %> However, when I use it with a @show that has

If I define an association (in my case a polymorphic one) in an STI parent class, and try to eagerly load it in a subclass, I get the following error: ActiveRecord::ConfigurationError: Association name ''myassoc'' was not found; perhaps you misspelled it? If I redefine the same association again in the STI subclass, it works. Is this a bug or what? -- You received this message

I have a MasterEvent model. It has attributes that is required by another model Event. The user selects the MasterEvent model and I create the Event model by merging the attributes of the selected MasterEvent with the attributes that were presented for the Event model in the form. I have association declarations in the MasterEvent and Event models. If I use STI does the subclasses inherit the

I''m trying to do an IN query, where I have an array of user objects imaginatively named ''users'': :conditions=>["user_id IN (?)", users.collect{|u| u.id }.join('','')] this ends up with: ... IN(''1,2,3'') ... Obviously I want this to be: ... IN(1,2,3) ... or even ... IN(''1'', ''2'',

Hello, I''m creating my own Tumblr [tumblr.com] like rails app. It''s like a blog, but in this case a blog post could be of a certain type, i.e. a regular post, a video, a link, a photo, a song(info). Well now, it''s clear that they share a lot of similar functionality: title, created_at/updated_at, commentable, probably has an author_id, etc.. But besides that they are

I have the following STI table: def self.up create_table :distributions do |t| t.string :type t.integer :simulation_id t.string :dist_name t.string :desc, :default=> ''fixed'' t.float :param1, :default => 5.0 t.float :param2, :param3 t.timestamps #fields for RscDist t.integer :resource_id #fields for LoadDist

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

Hello, is it possible to setup a model/table schema like this: Groupable --> Membership <-- Group ^ ^ | | User UserGroup I tried the following but failed: Groupable (table with ''type'' column) has_many :memberships, :as => :groupable has_many :groups, :through => :memberships

Hi all, I am also which one will be better STI or polymorphic for my app. thanks in advance -- 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 unsubscribe from this group, send email to

My girlfriend and I have been dating for two years, and she just told me she has an STI... Actually, I currently have three different models, like: Dog, Whale, Monkey They all have some similar attributes, but, they are unique enough to break into their own models. I could use STI, but I think the table would just have too many columns. Now, I wanted to let the Dog''s, Whale''s

Guys, I have a relationship between model classes that I believe is best represented by inheritance, but the likelihood that things will change often is driving us to composition instead. So, I have a class called Autos, and subclasses called Suvs, Minis, Mids, Sports, for example. We have been requested to avoid the STI approach to this, because of fear of a quickly growing table with

List doesn't seem to be posting out - still active here http://lists.digium.com/pipermail/asterisk-users/2005-June/date.html but not being received by email (time warner is the isp but other emails coming in every few minutes as per normal). Cheers, Dean -------------- next part -------------- An HTML attachment was scrubbed... URL:

Hi, I am trying to use STI since my classes only vary by one column in the database. Here is the structure (names have been changed to protect the innocent): Case / \ Registered Initial \ / Children A registered case has additional information than an initial case (I realize I could just set a flag to separate them, but there is a good reason to separate