similar to: counter_cache not updating

I am a bit confused about counter_cache here. The API docs http://api.rubyonrails.org/classes/ActiveRecord/Associations/ClassMethods.html say that only the belongs_to association can take the :counter_cache option. When I try to use it on a has_many I get an "unknown key(s): counter_cache" error. Why would this be the case? belongs_to means that this model has a field with an id

As far as I can tell, the counter_cache option on a belongs_to model doesn''t actually save anything in the database. For example, I have the following models: class Parent < ActiveRecord::Base has_many :children, :conditions => "deleted_at IS NULL" end class Child < ActiveRecord::Base belongs_to :parent, :counter_cache => true end With the following

Say I want to gather info from various Models... Files, Folders, and put them into a ''display'' Object DisplayFilesystem that will standarize the info from both tables (for display only)... Class DisplayFilesystem attr_accessor :item_id, :name, :type, :description, :date def initialize @item_id = @name = @type = @description = @date = nil end end So in the code side

Hi, I''m using the models, User, Item, and Add. Add belongs_to User (with counter_cache enabled) Add belongs_to Item (also, with counter_cache enabled) User has_many adds, and has_many items through adds Item has_many adds, and has_many users through adds When I go to save a new Item, I want to create a new Add for this, with the proper (loged in) User: @item.adds.create :user =>

Hi, I have the following code: Message, belongs_to :topic, :counter_cache => true topic = Topic.find_from_permalink(params[:id]) topic.messages.create(params[:message]) When the message gets created, then AR issues a supplemental SELECT to retrieve the message''s topic and then updates its messages_count. Why is that happening? If I do it manually: if

I have two model classes: class Item < ActiveRecord::Base belongs_to :channel, :counter_cache => true validates_presence_of :channel end class Channel < ActiveRecord::Base has_many :items, :dependent => true end In the Channel controller I have variable channel.items, an Array of Items. I would like to use the Array find method. However, channel.items.find() is a Rails

I''m trying to use counter_cache, but I''m not doing something right. It is unreliable and I keep having to correct it manually. Is there a good tutorial or reference on how to use it on-line? I have the AWDR book, but I need something more complete. TIA, Jeffrey

Hello list, Probably a newbie question but couldn''t find the answer in the archives. I am using the login_engine Plugin to implement the login functionality. I have a JournalEntry model that interacts with the journal_entries table. I would like to link the journal entries to the user who entered it. Essentially, it is a one to many relationship between the model User(from

Hi. I have a problem with counters in Rails. The situation looks like this: -3 simple models class Forum < ActiveRecord::Base has_many :posts end class Topic < ActiveRecord::Base has_many :posts end class Post < ActiveRecord::Base belongs_to :topic, :counter_cache => true belongs_to :forum, :counter_cache => true end - In migrations i have declared t.column :posts_count,

I have the following ActiveRecord objects: class Recipe < ActiveRecord::Base has_many :ratings, :dependent => true . . . end class Rating < ActiveRecord::Base validates_uniqueness_of :created_by, :scope => :recipe_id belongs_to :recipe, :counter_cache => true . . . end The created_by field on Rating is implemented as a "magic" field similar to this:

Hi, Jarkko: Thanks for the quick reply. I understand I can use ActiveRecord to specify the relation between the table as you have suggested, The part that I have trouble to understand is 1. Since I have a third table ProvWorkAtDept, do I need to specify this table somewhere when I define Provider or Dept? 2. If the provider view has both the provider name and several depts the provider

this used to work for me. i started re-writing my little app and now it doesn''t work. here''s my models: class Company < ActiveRecord::Base has_many :people end class Person < ActiveRecord::Base belongs_to :Company, :counter_cache => true end then i go into my console and say: c = Company.find(:first) c.increment_counter and its all like "waaaaaaH"

class Category has_many :tracks end class Track belongs_to :category, :counter_cache => true named_scope :converted, :conditions => {:converted => true} named_scope :active, :conditions => {:active => true} end I want to make custom counters for scoped associations, e.g: category.converted_tracks_count category.active_tracks_count And when `track` changes its converted,

Hey everybody, Rails currently offers ''belongs_to :counter_cache'', which is a very basic replacement for count triggers: ":counter_cache - caches the number of belonging objects on the associate class through use of increment_counter and decrement_counter. The counter cache is incremented when an object of this class is created and decremented when it?s destroyed. This

Hi List, I''m new to and hot on RoR. And I have a question regarding acts_as_tree and counter_cache. What methods actually update the counter_cache column? I''ve only really started the app so i''ve just got it set up so that I can select the parent node (from a list of nodes that exclude all descendants of the current node) with a radio buttoned list named and valued

>> that should be "belongs_to :user_type" Bingo! -----Original Message----- From: rails-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org [mailto:rails-bounces-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org] On Behalf Of Jarkko Laine Sent: Wednesday, 9 March 2005 6:59 PM To: rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org Subject: Re: [Rails] Confused about

Hi all I am new to Rails, and obviously I''m missing something, I''ll get straight to the question: A User has many operations (granted to her), each Operation is associated with an OperationType. Each Operation may be associated with more then one User. So the model goes like this: class User < ActiveRecord::Base has_and_belongs_to_many :operations

Josh Susser tells in his blog that the opposite direction of polymorphic will get into trouble together with has_many through. This is the url: http://blog.hasmanythrough.com/articles/2006/04/03/polymorphic-through I do that according to Josh Susser''s procedure: class Tagging < ActiveRecord::Base belongs_to :tag belongs_to :taggable, :polymorphic => true belongs_to

Hi all, if I have a has_many and belongs_to relations like this category has many articles article belongs to category is there a way I can specify the order of articles when pulling them up with @some_category.articles ? Many thanks in advance! -- Nicky

It seems that using a join model that joins with two has_many''s will fail to generate proper SQL class StudentSemesterRecord < ActiveRecord::Base belongs_to :semester has_many :discipline_records, :through => :semester end class Semester < ActiveRecord::Base has_many :student_semester_records has_many :discipline_records end class DisciplineRecord <