similar to: Class Table Inheritance - ?

I search an plugin or gem, but don''t find nothing satisfactory. I believe to be stranger a technology that nails the DRY, have that create you vary equal tables, instead of using inheritance. Exists an soluction for this? I want a solution similar to this: create_table :people |t| do t.column :name t.column :address end create_table :customer |t| do t.column :person_id

Active Record doesn''t appear to have support for table inheritance implemented in PostgreSQL as described in http://www.postgresql.org/docs/8.0/interactive/ddl-inherit.html. Is anyone working on such a thing or is their some compelling reason to avoid this feature? I am new to Ruby and Rails, but it doesn''t seem like it would be to difficult to adapt the current Active

I have a model User that has property called status. Status is just a string that can only be evaluated and not persisted. I.e. it doesn''t have a field in the user table. Anyways, I would like a method get_status to be called anytime I create a new instance of User. For example: user=User.new Since I created a new instance of User, I should now have access to the status property, e.g.:

Have been looking into using rails but am finding the "Composite Primary Keys are Bad" thing a tad disturbing (to put it mildly). I have been working with RDBMS systems for over fifteen years and this is the first time I have herd the idea questioned. I have cone across using surrogate keys which mirror the composite key for performance reasons in VERY big databases but I have never

Here''s the text of a quick note I''ve added to the Inheritance wiki page. I''m actually proposing that it would be a good idea to drop automatic single table inheritance and force people to declare it explicitly. There are two reasons for this: 1. Implicitly doing it unnecessarially limits your use of inheritance where you really need it: in your object-oriented

Hello, we have a problem in a CMS project that we believe is basic for RoR developement and could concern others as well - or have already: RoR implements the ''Single Table Inheritance'' (STI) Pattern: http://www.martinfowler.com/eaaCatalog/singleTableInheritance.html .. through its ''ActiveRecord'' ORM. The Fowler example mentions a ''type''

Hi everybody, I was using ruby with Lighttpd just fine, and all of a sudden I''m having a problem. I''ve exhausted google - nobody else seems to have this problem. when running script/server, I get: => Booting lighttpd (use ''script/server webrick'' to force WEBrick) => Rails application started on http://0.0.0.0:3000 => Call with -d to detach =>

OK, I''m finally starting to play around with the AWS part of Rails, and I''m running into problems with the functional tests. If I use the generator to create the web service as ./script/generate web_sevice MyTest do_it and then run the unit tests without further editing the code, I get the following error: test_do_it(MyTestControllerApiTest): ArgumentError: illegal

Hello, First, thanks for releasing Mocha. As someone who''s been practicing TDD much longer than I''ve been using Rails, one of my biggest complaints has always been the fact that the "Unit" tests are more like intefration tests because of how tightly coupled the domain model is when using ActiveRecord. Stubba looks like it could really help aleviate this problem. The

I know that Rails uses the Single-Table Inheritance as mentioned in the wiki (http://wiki.rubyonrails.com/rails/pages/SingleTableInheritance). I was wondering if there was an easy way of implementing Class Table Inheritance easily (one table per class) as defined in http://www.martinfowler.com/eaaCatalog/classTableInheritance.html. The model that I am used to is Class Table Inheritance, and

Hello, I tried to post this as a bug on the trac site, but whenever I hit submit, I got the error message: --- Precondition Failed The precondition on the request for the URL /newticket evaluated to false. --- Anyway... Let''s say I have the following model classes: --- class Project < ActiveRecord::Base has_many :tasks end class Task < ActiveRecord::Base belongs_to

Hello, I stumble upon this error when loading a subclass of the Transaction class. For full details, see the pastie: http://pastie.org/4053678 Error message: ActiveRecord::SubclassNotFound: The single-table inheritance mechanism failed to locate the subclass: ''Transactions::DummyDdnlTransaction''. This error is raised because the column ''type'' is reserved for

Hi, Has anybody tried using the Productize plugin on a recent Rails install? The pages on RubyForge http://rubyforge.org/projects/productize/ seem to indicate the development has sort of stalled, or perhaps it''s stable as can be. Just thought I''d ask for before I give it a go.. Cheers, Jeroen

I jumped into RoR @ about 3 AM. I think I''ve got it running, but need a simple sanity check. I''ve been through as many references as possible, but thought that I''d ask the list here for references. This list sort of almost being "live". _______________________________________________ Rails mailing list Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org

Changes were committed today to the r-devel version of R to make S4 and S3 classes (and abnormal object types such as "environment") work together more consistently. Basically, S4 classes can now contain any S3 class or object type, and should now inherit S3 methods for these. Also, the main practical problem with defining S3 methods for other S4 classes (namely, that S4

I want to start out with an apache class that will disable all modules except for a pre-defined list, thus establishing a baseline of active modules. Then as needed, other classes could enable a module that they require that would have been disabled by the baseline state. Its possible several classes may try to enable the same module (1 or more classes needing module1 could be on a single node)

I''m wondering what the accepted method for doing unit tests on STI models is. I tried to create a fixture for the class but Rails tries to load that data into the non-existent child table. I could create a fixture named for the real, parent table, but then it would be very difficult to test for the individual functionality and integrity of each sub-class. I saw this page

FIXED: Transaction is a reserved word, and it cannot be used even though I put it into its own module. So my guess is Transactions::Transaction still somehow got resolved to the Rails internal Transaction class. Renamed the Transaction (and its subclasses) to Transact and it works fine now. Thanks! -- cmdjohnson On Sat, Jun 9, 2012 at 3:08 AM, Commander Johnson

Hi, I started this post on bioc-devel but this seems to be more general: https://stat.ethz.ch/pipermail/bioc-devel/2013-May/004311.html See reproducible example from Martin below. Thank you. Renaud ---------- Forwarded message ---------- From: Martin Morgan <mtmorgan at fhcrc.org> Date: 7 May 2013 19:55 Subject: Re: [Bioc-devel] ExpressionSet and LumiBatch: inheritance problem in S4

Hi Timo my tests resulted in inheritance is given if a userfolder has set some acl to its new created subfolder , which is nice if some userfolder has its acl from global acl there is no inheritance to its new created subfolders, that subfolders will always created with full owner rights i am not really sure if its a good idea to have inheritance from global acl and if its hackabel what is your