similar to: Editiing multiple has_many associations at once

Hi all, I have some problems with a few temporary objects, this is the relation between them: A -(1,n)-> B -(1,1)-> C B -(1,n)-> D C -(1,n)-> D I have a "wizard" to create "A" objects, I''m storing everything in the session, something like this: a = A.new session[:a_object] = a ... b = B.new b.c = some_c_instace a.bs << b ... d = D.new b.ds

Hi, I haven''t done any associations before, so please forgive my incorrect use of terminology... If I set up a has_many :through association, can I manipulate the associated instances directly (like an Array), or do I need to manipulate the join model? For example, suppose I have two classes and the associated join model: class foo has_many :foo_bars has_many :bars, :through

Hi everyone. I''ve made a default change to has_many :through associations that I felt was important to make before they''re released. This is after some tickets and confusion I''ve seen regarding has_many :through. class Connection < ActiveRecord::Base belongs_to :user belongs_to :channel end class Channel < ActiveRecord::Base has_many :connections

My question is whether the rails helper methods for handling associations can be nested (see examples below). I suspect not as currently I''m getting "unknown method" if I try and use two associations in one call. The essence of the code is class User << ActiveRecord::Base has_many :items class Items << ActiveRecord::Base has_many :reservations belongs_to

Is it possible to serialize ActiveRecord objects and ActiveRecord children to XML? -- Posted via http://www.ruby-forum.com/.

I am using nested forms on person model that has many pictures. I would like to allow the user to remove on or more of the associated pictures from the person using nested forms as suggested by Ryan Bates. However delete will delete the picture not remove the associatioon I can do it in the controller, but it should be done in the same way as delete is performed using attribute _delete Anyone

Hi, I am trying to use ActiveLdap for authentication in my rails app. But I am running into a problem with the "belongs_to" and "has_many" associations. Here ist how my models look like. class Person < ActiveLdap::Base ldap_mapping :dn_attribute => "uid", :prefix => "ou=People", :classes =>

I''ve tested this on both 2.3 RC2 and Edge. This pastie contains model, helper and view: http://pastie.org/415742 When I save a vocabulary - its terms don''t save. I''m fairly sure it worked in RC1. Would appreciate any insight. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on

I want to have a parent model that I can add child objects (via a has_many association) using the rails 2.3 nested form syntax. However, it seems like rails throws an error during validation of the parent model if I have a validates_presence_of :parent_id defined in the child model. Is the only solution to this to remove the validates_presence_of :parent_id? This seems like a hack-ish workaround.

Hi, I''m trying to create a Blog in it''s own subdirectory for an E-commerce site. Everything is hooked up just fine for the basic posting, but when I try to add Comments, I''m getting all sorts of headaches! I''m referring to the screencast by Ryan Bates on the rubyonrails.org site. Basically, my controller is Blog::Comments, in my Blog::Post comment form I have

I''ve got a User model and a Book model. A user is required to submit books each month to be reviewed by other users. I have the following relationships defined: # the join model book_review.rb belongs_to :user belongs_to :book end book.rb # each book is reviewed by many users. This allows us to get the BookReview # objects associated with this book has_many :book_reviews,

Given the models Country, State, City and Person as follows. class Country < ActiveRecord::Base has_many :states end class State < ActiveRecord::Base belongs_to :country has_many :cities end class City < ActiveRecord::Base belongs_to :state has_many :people end class Person < ActiveRecord::Base belongs_to :city end Is there any way that doesn''t allow to delete

Hi. I have a couple of best practices questions regarding polymorphic associations, naming join tables and user permissions. Currently I have implemented the user authentication model from the rails recipes book. Basically it goes something like this: MODEL CLASSES: class User < ActiveRecord::Base has_and_belongs_to_many :roles end class Role < ActiveRecord::Base

I just now thought of this, and sure enough it works like a charm (at least so far in my limited testing): has_many :events, :dependent => :delete_all has_many :upcoming_events, :class_name => "Event", :conditions => "date > NOW()" The purpose of this is that it makes eager loading of subsets of associations possible without replacing all the magic of the

I have these 3 models. class Ivr < ActiveRecord::Base has_many :klusterings, :dependent => :destroy has_many :klusters, :through => :klusterings, :uniq => true end class Kluster < ActiveRecord::Base has_many :klusterings, :dependent => :destroy has_many :ivrs, :through => :klusterings, :uniq => true end class Klustering < ActiveRecord::Base belongs_to :kluster

Considering an object with several has_many :through => associations, what is the ''best'' way to handle validations? As an example: class Student < ActiveRecord::Base # some attrbutes like # :name # :grade # relationships has_many :students_assignment, :dependent => :destroy has_many :assignments, :through => :students_assignment has_many

Hi, I want to use xen 3.1 on debian 4.0 (etch) in order to have Win XP, OpenSolaris, FreeBSD, NetBSD as guest os. Could you tell me if tell following hardware will fit fore this purpose (system is used for development)? Intel Core 2 Duo E6600, 4 GB RAM, 4x WD 1600AAJS (RAID 0+1), ASUS EN7600 Top Silent/HTD It would also be interessting for me if it will sufficent work (preformance) if I do

Dearfolks-- I have been told by an experienced R programmer and teacher whom I trust that it is easier to understand R code if you read it aloud, as the language that it is. However, she was clear that reading it aloud was not simply reading the marks on the screen: you read A.df[5,] as "the fifth row of A.df" (or "the fifth row of data frame A"), not as "A dot df left

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 <

> Op 4 nov. 2019 om 13:14 heeft Per Qvindesland <perq at me.com> het volgende geschreven: > > Is there any plans to release a official AMI for Centos 8 soon? I?ve been trying to get information about this since FOSDEM 2019 last year. I offered help, reached out to multiple twitter accounts, visited the Centos community day before FOSDEM in January 2019 hoping to get this process