similar to: Script to generate Relations

Hello List, I''m a bit spent on this problem, and my code might be whack. I seem to be encountering a problem where the primary key on a join table is not being resolved correctly. I will elaborate after some code bits. I am creating the join table using migrations, and relevant model code is this: class Post < ActiveRecord::Base has_and_belongs_to_many :records

Hi everyone. I''m trying to figure out how to implement site-wide tagging for my website. I have a rails-based weblog that supports tagging posts. There''s a has_and_belongs_to_many relationship between posts and tags. I''d like to now reuse those tags for tagging links as well. Where I have a posts_tags table with post_id and tag_id fields, I''d like to

Hi all, I''ve got a Post and User classes. The Post has a user_id attribute to point to the user that created it. I want to implement favorites, so I made Post and User both "has_and_belongs_to_many" and created a favorites join table. The join table has a post_id and a user_id column. Now when I get my post everything seems to be okay, but in some contexts, the user_id

Hello, I have two tables "people" and "relations" Following are the models class Person < ActiveRecord::Base has_and_belongs_to_many :relations class Relation < ActiveRecord::Base has_and_belongs_to_many :people I want to select multiple relations and when i say Person.create(params[:person]) in controller the relation ids and and id of person should be stored in

Hello, Is it possible to have several HABTM-relationships for the same object? Example: Imagine I have 3 objects (classroom, student, teacher) and define the associations for the student as: class Student < ActiveRecord::Base has_and_belongs_to_many :classrooms has_and_belongs_to_many :teachers class Classroom < ActiveRecord::Base has_and_belongs_to_many :students class Teacher <

robo@robo:~$ sudo /etc/init.d/libvirt-bin start [sudo] password for robo: * Starting libvirt management daemon libvirtd/usr/sbin/libvirtd: /usr/local/lib/libvirt.so.0: version `LIBVIRT_PRIVATE_1.2.2' not found (required by /usr/sbin/libvirtd) Giving up waiting for /var/run/libvirt/libvirt-sock. After installing libvirt from source a lot of Ubuntu user face this issue, as i searched on

Hi to all. I''ve a very big problem. I know this can seem very loing, but please, try to read it. I have a simply blog, with posts and their comments. I''ve two tables in my db, posts, with post id, text and comments_count to store the number of comments-children of each post (as recomanded to do in AWDWR); and the table comments, with comment id, post_id for the post

hey, i my database i have users and groups, each user can get in different groups my db structure: table groups: id, name, basegroup, firm_id table users: id, firstname, lastname, email table groups_users: group_id, users_id my relation is a many to many: class Group < ActiveRecord::Base has_and_belongs_to_many :users end class User < ActiveRecord::Base has_and_belongs_to_many

I want to return an int from a find_by_sql call. But when I use that result to compare to another count the error tells me I have an array. MODEL: # Returns the number of comments in a specified post def self.find_count(post_id) find_by_sql(["SELECT COUNT(*) FROM commments WHERE post_id = ?", post_id]) end CONTROLLER: def test @post =

I''m having a bear of a time getting my cached pages to expire. Maybe one of you guys can help me out. I''ll show my sweeper and then my log to show that it "should" be working. class PragmaticSweeper < ActionController::Caching::Sweeper observe Comment def after_save(comment) expire_page(comment.post_id) end private def expire_page(post_id)

Hi, Thanks for a wonderful Getting Started with Rails. I am up to the last section and just added the comments part. So while testing and looking over comments_controller.rb; I see the reference to post_comment_url calll where is this defined. Below is the message I am getting. Thanks ActionController::RoutingError (post_comment_url failed to generate from {:post_id=>#<Post id: 1, name:

Hi, I''m getting the dreaded "Premature end of script headers: dispatch.cgi" message on my production server. Before I list all the things that I tried, let me mention that I already have a Rails app working on this server (installed by somebody else). First app is accessible at: http://mydomain.com/cwps and it all works. Second app is accessible at: http://mydomain.com/robo

I''ve been sitting on an ActiveResource patch for a few weeks, waiting to get some feedback from David. But, I see other folks like Jeremy are starting to use it, so I committed my patch: http://dev.rubyonrails.org/changeset/4890 It gets all the basic operations in working order, and adds support for prefixes. I wasn''t quite sure how to pull this off. Right now, I''m

Hello, I''m creating my own Tumblr [tumblr.com] like rails app. It''s like a blog, but in this case a blog post could be of a certain type, i.e. a regular post, a video, a link, a photo, a song(info). Well now, it''s clear that they share a lot of similar functionality: title, created_at/updated_at, commentable, probably has an author_id, etc.. But besides that they are

I am looking for a little assistance with a problem I have with a simple table join using Rails. I am a relative newbie to both Ruby and Rails so any help would be greatly appreciated . I have two tables products and product_formats. create table products ( id int not null auto_increment, title varchar(100) not null, product_format_id integer

trying to set up a "has_and_belongs_to_many" relationship would very much appreciate the help, not sure what im doing wrong at all. Scheme.rb class Scheme < ActiveRecord::Base validates :schemename, :presence => true belongs_to :user has_many :levels, :dependent => :destroy has_and_belongs_to_many :works end Work.rb class Work < ActiveRecord::Base

hi all, has_and_belongs_to_many :cows has_and_belongs_to_many :milkmans i am using has_and_belongs_to_many in my app.I know this will create third table internally cows_milkmans in mysql database. when i migrate develpoment database i have table cows_milkmans. Good no Problem till now. Now a problem start When i migrate test database there is no such cows_milkmans table is present..

Dear useRs, it is our great pleasure to announce the new package "relations" to appear on all CRAN-mirrors soon. This package provides data structures and methods for creating and manipulating relations, relation ensembles, sets, and tuples. The feature list includes: * creation of relations by domain and graph/characteristic function/incidences, * extraction of characteristic

Dear useRs, it is our great pleasure to announce the new package "relations" to appear on all CRAN-mirrors soon. This package provides data structures and methods for creating and manipulating relations, relation ensembles, sets, and tuples. The feature list includes: * creation of relations by domain and graph/characteristic function/incidences, * extraction of characteristic

"rick" has given AR/Oracle some love, but it''s still unhappy... http://dev.rubyonrails.org/changeset/5310 ------------------------------------------------------------------------ r5310 | rick | 2006-10-16 08:42:55 -0700 (Mon, 16 Oct 2006) | 1 line Fix has_many :through to add the appropriate conditions when going through an association using STI. Closes #5783. [Jonathan Viney]