similar to: subclassing vs mixins, which one should be used?

I am working on re-factoring my admittedly ambitious employee management Rails app that I created for work. The good news is, my first major version went over like a dream(With no small amount of thanks due to the community and the support)! All of the functionality the bosses dreamed of! The bad news? It''s REALLY SLOW. So I rolled up my sleeves and have been working on some re-writes

Hi folks, Can anyone share some accumulated wisdom about the best way to spec mixins in general, and (Jamis Buck-style) ActiveRecord "concerns" in particular? The standard situation here is that there''s a bunch of functionality, related by concept if not by implementation, that one wants to inherit in many different classes (e.g. ActiveRecord models) without having to

First of all, sorry for the crossposting, but I put this into the Ruby Forum first of all, but was pointed to this as a more appropriate location. I''m using ActiveRecord and ActiveSupport in a non-rails environment to connect to multiple databases, and I''ve found the following (single database) to cause me an error. Note that params is my database settings and omitted for

Hello, I have a few models -- book, cd, dvd -- for which I''d like to have an abstract base superclass to hold some common stuff. That abstract class, I was thinking, would inherit from ActiveRecord. Didn''t work, though, and looking around, I found this: <http://wiki.rubyonrails.com/rails/pages/HowtoMakeAbstractModel>

I have a module that deals with content pages and categories in my application so create following tables: content_pages content_categories Obviously I need a Page and Category module to map to these tables, but in order to avoid conflicts with other Category classes, i declare my model classes like this: Content::Page Content::Category Now, that''s all fine - except that my models

I have to objects with common functionalities and a lot of difference. So I want that each have his own table but inherit the common functionalities from a parent class. How can I do this in Rails ? -- 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

so as to not reinvent the wheel, are there any exisiting examples or mixins for a star rating system? basically what i''m looking to do is show pictures of local models which will be voted on by users, and the model with the most votes will get her photo in a calendar. anyone able to point me in the right direction... tutorials, code, whatever would be greatly appreciated! -A --

Hi, I just put together a little mixin to provide pseudo-RESTful services in camping apps. Basically, it looks for a hidden _verb field in form posts, and sets the @method to the supplied value (e.g. put or delete - which browsers don''t support). This lets you define put and delete methods in your controllers. Groovy. Code: http://pastie.caboo.se/22613 Is there any permanent repo of

It looks like cached-model is broken again under rails 1.1. Can anyone confirm? Note that the exception below indicates it''s trying to treat CachedModel as the class name of the model, rather than using the proper class name (which is Entry in this case, and the table called entries). This is a model using Single Table Inheritance and acts_as_tree, and worked just fine under 1.0 and

Hi, Does anyone know much about abstract_class? Does it actually prevent instances of the class from being created? Does it disable certain methods? I already know what it''s for, but I want to know what setting self.abstract_class=true actually does. The reason I ask is that I want to use it for a slightly unorthodox purpose. I want a class who''s only attributes are its

i keep getting this AssociationTypeMismatch error. i think this could be a bug related to ruby/rails when using mixins. heres a short version of my code: # user.rb require ''friend_invitation'' require ''friendship'' class User < ActiveRecord::Base include FriendInvitationUser, FriendshipUser ... end # friendship.rb ... module FriendshipUser def

I''m trying to understand how best to use inheritance and wonder if Rail''s Single Table Inheritance model too restricting. I have a model Companies who provide 1+ Services (HABTM relationship). I assume the best way to represent this is with a series of child models representing each type of service : ServiceType < Company. I want to return lists of companys for each

All, I whipped up a small extension for Prototype to solve some modeling issues I was having on a large JS project. I know there have been serveral alternative "write JS in Ruby" type efforts, including ruby.js, rb2js, and prototype.js itself, but I was hoping to keep it as light as possible while gaining the most powerful aspects of derivation/mixins/callbacks. Much like the prototype

If I want to write a function which will be available to views, I write a helper function in one of the places set aside or that very task by Rails. If I want to write a little suite of functions to be mixed in by a number of model classes (but not all), where do I put them? Plug-ins look like AN answer, but they also seem a little heavyweight for simple, project-specific tasks.

Hi guys, in development mode a module mixed into a helper class seems not to be reloaded inside app/helpers: class TestHelper include EvenMoreHelp #foo end module EvenMoreHelp # bar end the contents of #foo get refreshed, but not #bar... is there a way to fix that behaviour. I intend a full reload in development mode for obvious reasons. Regards Peter

I''ve been working on a plugin called Http Test where I add HTML validation and link checking to controller and integration tests through an after filter in ApplicationController. I used to mix in a bunch of methods that I needed into the ApplicationController class, but to me this had a bad smell, so I broke much of the code out into separate classes that I delegate to.

As is often the case when I tackle a new platform/language, I get the big picture very quickly (because frameworks are frameworks are frameworks) but its the nitty-gritty of the language that bogs me down... So I have some similar methods on a few of my model classes that I wanted to push into a helper. Now I reckoned that the Ruby way was to create a module and mix it in with include. However, I

I''m looking for a way to subclass active record (I''ll refer to the subclass I want to create as NewActiveRecord) so that I can call different methods on a save or destroy action on all models which sub class NewActiveRecord I dont want to use before_save or any of the other regular call back methods as I want to be able to use these call backs in the models which subclass

Hi. I have to convert the contents of all columns to uppercase before creating a row. Is there an easy way to accomplish this so I don''t have to go one column at a time and upcase! it? Thanks. Pepe --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group,

I am trying to inherit from a ActiveRecord class defined in a plugin. The problem is that ActiveRecord thinks I am doing an STI and is looking up a table that doesn''t exist. Currently, I have a method in the parent class that looks like this: def self.fix_table_name class_eval do set_table_name(Inflector.tableize(self.to_s)) end end The problem is that this method