similar to: When to use Mutex::synchronize?

I wanted to group some functions which I use in some models in one place. Controllers have application.rb and views have helpers but I couldn''t find anything about models. Using the /lib directory seemed to be the only way. Alright... so I have something like this: /lib/code.rb class ActiveRecord::Base def method_a(n) ....... end def method_b(n) ........ end end

I have an app that requires me to define a class variable (actually an array) in a controller and then access it from within a view. It seems that the class variables aren''t working right. Here is an example of what I''m trying to do. class DisplayController < ApplicationController @@thumbnail_array = Array.new ... def some_method @@thumbnail_array = SomeModel.find_all

Hey All, Two questions. Firstly, what is the difference between create and create! I see that create is document in the api http://api.rubyonrails.org/classes/ActiveRecord/Base.html#M002269 What is the difference between the two of these functions and where is the create! function defined. Also, What are the differences between these two calls? a) SomeModel.create!{ :property_a =>

I have a question regarding best practices around module and plugin testing for rails applications. In our application we have created several plugins that extend ActiveRecord::Base with class methods, that when invoked in a model add behavior to that model. For example ... class SomeModel < ActiveRecord::Base adds_some_cool_behavior adds_another_wicked_sweet_behavior end My

Hi! I am looking for a solution for the following problem: Some of my models share some attributes and also was in need for some extra features, so I created a class "RecordWithFeatures": ----------------------------------------------------------------- class RecordWithFeatures < ActiveRecord::Base # @Override def self.descends_from_active_record? superclass ==

I found a tutorial for creating classes using generic functions ? S3 way ! It was short description so I couldn't grok in full its usage ... So far so good, what i currently do is something like this : Blah <- function(data,...) UseMethod('Blah') Blah.default <- function( ...... ) { self = .... class(self) <- 'Blah' self } Blah.some_method <-

I have a method in a controller that invokes a render :partial => ''some_partial_view'' In that view, I''m trying to access a method defined in a model, like this; <% for view in @an_array %> <% local_var = view.some_method() %> <% another_var = view.a_column_name %> etc.. I am getting an undefined method error but the model is accessible

First of all, I''d like to do what I''ve seen several others here do: thank Ezra and any other contributors for producing a really great plugin. Even though I''m having some minor problems, this is all so approachable and easy to work with and dig into... I hate to think of the hoops you''d need to jump through (both as creator of such a system and as a user) to

Hi, I have a controller where I access a singleton class that I use to connect to a DRbprocess DrbConnector.instance.some_method I notice that on every request, the constructor is called so it is making a new instance of this singleton. Is this normal? Thanks, Curtis

Hi, I wonder if there''s an easy way to access the associated Model class from its Controller. Something that would allow me to write snippets like the following: class PeopleController < ApplicationController def some_method person_model_class = self.some_method_to_retrieve_the_person_model_class() end end Cheers, Marco -- Posted via

I''ve setup two models, 1 and 2, that are associated by has_and_belongs_to_many. I''m trying to get an attribute from model_1 to use in a method in model_2. When I use the code below, I get an error saying ''undefined method model_1_id''. What am I missing? Thanks! Model_2.rb Class Model_2 < ActiveRecord::Base ... has_and_belongs_to_many :model_1 def

Hello, This is probably a silly question but looking at "api.rubyonrails.org", I can''t seem to figure out which method I should be using ... I want to execute an sql statement, like "truncate table BLAH" from within one of my rails app ... What''s the "right" way to do this? Thanks, /B -- Bruno Mattarollo <bruno.mattarollo@gmail.com>

Is there any scalable alternative to iterating all the records of a certain model? #find_all seems to load everything into memory. With 500.000 records it will be a swap storm. Pedro.

Hello All, I want to schedule a mail every day. I used whenever gem. I added gem ''whenever'' in my gemfile. Then in the terminal I did - "whenever ." which created a schedule.rb. In schedule.rd I added this piece of code:- set :environment, "development" every 2.minutes do runner "UserMailer.some_method" end Does it get invoked

I was looking at Kyle Mawell''s extremely nifty-looking StateModels plugin http://www.kylemaxwell.com/articles/2006/02/06/fun-with-single-table-inheritance and before I go down the road with it, I was wondering if anyone has used it with file_column. The way file_column deals with an uploaded file -- by storing it to the filesystem in a path that employs the model name and id --

I have a simple question. Let''s say I do this in one of my models: after_save drb_conn.some_method(self) end When that object gets over to the background process is it the exact same as?.... Model.find some_id #in the background process As far as my background process is concerned passing the object is not any different than passing the id and using the find method? Because

I''ve seen this come up a few times before on this list but never felt it got a satisfactory answer. What is the best way to execute timed actions? Examples include sending an email each week, calculating interest each day, or cleaning up your database or server files. This wiki page has some ideas, but these seem a bit extreme.

Hello, I need to access an mirrored database with one read and one write cluster. Is there a way to tell a model to use two connections? So that all updates etc go to the write database and all read from the read one? This is a fixed set up I can not use MySQL 5.x stuff and additionally i get a token on write, which can be checked on read (and wait for replication) if new data is needed. I

Hi, How can I validate user info under certain conditions? For example, I just downloaded a plug-in that allows me to validate phone numbers, but what I would like is to only validate the phone number if it is not blank and if the user_type_id field is equal to one. How can I achieve such a validation in my user model? Thanks, - Dave --~--~---------~--~----~------------~-------~--~----~ You

hello all, i am new to RoR programming and am struck with the functional test whole checking for uniqeness of carriers. If it is not unique,the the bin shudn''t be created.Can someone help me in correcting my code. def test_create_failure_cycle_unique begin num_bins = Bin.count post :create, {:bin => { :carrier => carriers(:A), :cycle => cycles(:one), :name =>