similar to: Association callbacks on model observers

I was just wondering what about a report that I made almost 2 months ago: Active Record observers broken<https://rails.lighthouseapp.com/projects/8994/tickets/4087-activerecord-observers-cant-be-used-for-before-callbacks> I think it''s a pretty big bug. In Rails 3, creating an observer with a "before_save" callback (for instance) will result in all observed models being

Hey Guys, I''m getting a peculiar bug working with Observers and has_one associations. When a has_one association is invoked by an Observer it always returns null. I looked in the development.log file and the SQL for the has_one association isn''t even being executed. On the other hand, when I replace the has_one association with just a hand crafted method, it does get called

Hello all. I am looking for some feedback on an implementation. I''m writing a plugin that will log all model changes. I do not want to have to add a line a code for this functionality every time I create a model. Instead I create a table with the name <model>_changes. The basic stuff was easy: base.after_create {|model| model.log_create if model.has_backup_table?

ok, guys i have followed the self referential recipe from the book it works perfect but now i have some doubts, at the end the model are modified to force the user beign added as a friend that add too who are adding him so how i can make that the full relationship doesn?t be complete until the friend beign added approves it(talking in the implementation of the code of course)? by the way,

If Product and Category models are in a habtm relationship, i.e. class Product < ActiveRecord::Base has_and_belongs_to_many :categories end class Category < ActiveRecord::Base has_and_belongs_to_many :products end I want a piece of code to be executed every time a product is connected to a category. Where do I put this code? Which callback (and on which model) will be triggered? Any

Hi all I''m working on a Custom Formbuilder. I want it to create me with a single method call checkboxes for a given HABTM association. My model looks like this: [code=ruby]class Member < ActiveRecord::Base has_and_belongs_to_many :preferred_music_styles, :class_name => ''MusicStyle'', :join_table =>

Hi, I''m currently having the situation where I have to implement a polymorphic has_and_belongs_to_many by introducing an in between model that handles all the "has_many :as" and "belongs_to :polymorphic" association implementations... and is not doing anything else. Thing I don''t like it here is, I am unnecessarily loading AR instances only to execute SQL

Hello Experts, I have a HABTM association as followed: class Account < ActiveRecord::Base has_and_belongs_to_many :user end class User < ActiveRecord::Base has_and_belongs_to_many :type has_and_belongs_to_many :account end class Type < ActiveRecord::Base has_and_belongs_to_many :user end I have the following query; I Have a parent user who is creating another user under its

I have two objects that are associated in the following way: class Class1 < ApplicationController has_and_belongs_to_many :class2s has_and_belongs_to_many :otherClasses end class Class2 < ApplicationController has_and_belongs_to_many :class1s has_and_bleongs_to_many :otherClasses end Now, when I run the following query, @objects = Class1.find(:all, :conditions

Is there a recommended way to exclude a column from associations? for example: Model Album has_and_belongs_to_many :photos Model Photo has_and_belongs_to_many :albums Photo Table int :id int :order blob :data <-- the culprit! -------------------------------------------------------- I''m caching the output of Photo.data in a controller, but i don''t want to select

hello, I''am new to ROR and I have a problem. I have to models "rights" and "roles" on a has_and_belongs_to_many relationship, through "roles_rights" table. When I try to add a new role although I put in my form fields for each right, a record is added to table roles but none to roles_rights. I am using Ruby 1.8.4 rails 1.0 mysql 5.0 here is my code:

Hello I''m using the ''act_as_authenticated'' plugin to implement a small and simple authentication system in my app. Everything is working just fine and the world is a better place to live in. The plugin creates a ActiveRecord observer in order to send the newly registered user a confirmation e-mail. Per the API docs [1], one should declare the observer in the

Good Friday Everyone :-). These are my models: Problem -> has_and_belongs_to_many :tags Tag -> has_and_belongs_to_many :problems Now if a tag does not exist and I create it and associate it to the problem it works self.tags << Tag.create(:name => tag) But if I have the tag already in the DB and just want to link it to another problem it does not really like me. I do it

What is the best way to add action after a belongs_to assignment? (Just like ''after_add'' in has_many assignment). I see that there is no callbacks for belongs_to. I have tried overriding parent= : alias :parent_before_mod= :parent= def parent=(the_parent) parent_before_mod = the_parent if save # my actions here end end but when I tried to assign parent, parent_id

Hi all. I''ve got a simple AR Observer: class NewOrderObserver < ActiveRecord::Observer observe NewOrder def after_create(object) Note.create(...) end end In environment.rb I have the following line: config.active_record.observers = :new_order_observer And in application.rb I have: NewOrderObserver.instance Aside from simply not working, it''s causing

I need to add an ActiveRecord observer and thought I should follow Rails 2 intent by not changing the base environment.rb I create a file config/initializers/observers.rb but don''t know what to add to it. I can''t add: config.active_record.observers = :user_observer Since "config" isn''t defined in the scope of the initializer file and I don''t know if

class User < ActiveRecord::Base has_and_belongs_to_many :projects end class Project < ActiveRecord::Base has_and_belongs_to_many :users end class ProjectController < ApplicationController def add_user @project = Project.find(params[:project_id]) @user = User.find(params[:id]) @project.users << @user unless @project.users.include?(@user) # I''d

I am using the proven authorization plugin to defines roles for users, so I can get all groups where a user is ''member'' @groups = current_user.group_memberships I have an habtm association between groups and events class Group < ActiveRecord::Base has_and_belongs_to_many :events .. class Event < ActiveRecord::Base has_and_belongs_to_many :groups I am trying to list

I know that for has_many, and has_one. I can do :dependent => true and the associated object will be destroyed when the main object is destroyed. However, there does not seem to be a dependent like option for has_and_belongs_to_many. Is there one I do not know of? Is there a simple solution to this? Thanks, Brian -- www.kenlet.com

Greetings all, As a Noob, I''ve been diligently working my way through the AWD4R book and finally arrived at the part about observers -- which BTW I think are very cool tech. Anyhow, I got the Audit Observer working. Now I want to test it and perhaps examine it''s attributes and methods to make sure it does what is expected of it. For example, one thing I would like to do