Displaying 20 results from an estimated 9000 matches similar to: "Using through with habtm"
2006 Feb 19
4
Multiple HABTM to one table
I have a class Player, and a class Game.
Game has two HABTM relationships to the Player table through seperate
relationship tables.
class Game < ActiveRecord::Base
has_and_belongs_to_many :players, :uniq => true
has_and_belongs_to_many :victors, :class_name => ''Player'', :uniq => true
end
When I add Player A to players, and Player B to victors, and save the
2006 Feb 07
1
habtm :uniq causing duplicate inserts? How to update Rails?
Hello *Gem* experts,
Sorry for asking multiple questions in one post but they are both related to one problem.
So far I have the following code:
class Member < ActiveRecord::Base
has_and_belongs_to_many :blogs, :uniq=>true
.....
end
class Blog < ActiveRecord::Base
has_and_belongs_to_many :members, :uniq=>true
...
end
The issue is that
2006 Feb 01
0
habtm and counter (xxx_count field in DB)
Hi all
I have the following models:
class Member < ActiveRecord::Base
# DJ Profiles the member is part of
has_and_belongs_to_many :disc_jockeys,
:join_table => ''members_are_disc_jockeys'',
:uniq => true
end
class DiscJockey < ActiveRecord::Base
# Members that are part of this DJ profile
2006 Jun 14
3
Prevent duplicate HABTM associations
Hi,
I am trying to restrict duplicate has_and_belongs_to_many associations.
I tried to find support for a association validation for duplicates but
couldn''t find anything.
I understand I could use :uniq=>true on the model association but this
would only prevent it from displaying duplicates, I want to stop
duplicate associations being inserted in the first place.
I have a vague
2006 Mar 13
3
HABTM: two habtm''s between the same two tables
Imagine I want to track people, and the clubs that they belong to.
table people with columns person_id, person_name
table clubs with columns club_id, club_name
And I have the association table:
table clubs_people with columns person_id, club_id
Now I know how to do this habtm between the two, in order to associate
people with clubs that they belong to.
However my application also needs a
2006 May 12
2
How to declare several HABTM-relationships?
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 <
2006 Feb 20
0
No Magic for HABTM forms?
Hi,
I posted yesterday asking how to get form tags to reference the
associated objects in a habtm relationship. I was hoping for Rails
Magic, but it looks like Rails doesn''t have habtm magic beyond a
certain point.
Here was my solution for others who might have the problem. Also, I
hope someone shows me that there is a simpler way.
The Database Model:
class Registration <
2006 Jan 19
0
Help with nested HABTM relationship
Hi,
I am trying to perform a query with ActiveRecord that I want to put into
a Rails application later. For now I just wrote it within a plain old
Ruby script for easier testing.
I am working with an existing database so I had to map some foreign keys
myself. As you can see from the models below, the database has a
structure of
Prospectlists <=habtm=> Contacts <=habtm=> Accounts
2006 Jan 19
5
Multiple HABTM relationships with self ???
I need to have a table related to itself via a join table. Will HABTM
support this? That is:
class Recipe < ActiveRecord::Base
has_and_belongs_to_many :recipes, :join_table => "recipes_recipes"
end
More importantly -- how does RoR support MULTIPLE self-joins? I.e., to
relate the table to itself via multiple join tables.
SFAIK, HABTM won''t support multiple
2006 May 18
3
Model Madness: habtm vs through
This has me scratching my head:
a Person has many Things
a Person has many Collections
a Collection has many Things
...Things in a Collection are ordered
...Things in a Collection can be related to (created by) any User
...a collection has additional attributes, such as a name etc
I am confused about habtm in rails (especially when using
acts_as_habtm_list) vs. going the :through route.
2006 Feb 14
1
Another HABTM Question
Hi there,
I have a question on what would be the best way to save a HABTM model.
A posting habtm categories, and a category habtm postings.
class Category < ActiveRecord::Base
has_and_belongs_to_many :postings
end
class Posting < ActiveRecord::Base
has_and_belongs_to_many :categories
end
In my blog_controller, where the actual posting is saved, is where I
think I''m
2006 Jun 30
2
how to HABTM with STI ??
Hello all
This is my first post so excuse the basic question. (and any repeats I just
got an email saying this post was too big so I have re-submitted a smaller
version)
I was following the thread on
http://lists.rubyonrails.org/pipermail/rails/2006-May/038988.html regarding
the STI on HABTM for RoR.
I have a very similar problem and was hoping for some help.
I have the
2006 Jun 20
1
Preventing Dups in HABTM
I have a habtm that looks like:
report
has_and_belongs_to_many :subscribers
subscriber
has_and_belongs_to_many :reports
When I add a report to a subscriber, I have to run code like:
raise "already there, idiot!" unless
report.subscribers.find_by_id(subscriber_id).nil?
Is there a better way to avoid adding duplicative associations? has_many
:through seems like overkill for this
2006 Aug 09
3
HABTM and getting to arrays from either direction
I didn''t find exactly an answer on this one, so I''d like to get a
clarification from folks who live & breathe HABTM.
class foo
has_and_belongs_to_many :bars
end
class bar
has_and_belongs_to_many :foos
end
(and yes, I have a bars_foos table in my db)
def test_habtm
bar = Bar.new
foo = Foo.new
foo.bars<<bar
assert !foo.bars.empty?
assert
2007 Oct 15
0
converting from HABTM to has_many :through
Hello,
I have a has_and_belongs_to_many relationship that I''ve realized I need
to add additional attributes to. So I''m converting it to a has_many
:through (HMT) relationship. This is the first time I''ve used an HMT,
and it seems like I''m using too much code. I couldn''t figure out how to
get the join model objects to update automatically as a result of
2006 Feb 28
8
HABTM count table
Hello,
I have a question about HABTM and counting records.
I have these models
class Sort < ActiveRecord::Base
has_and_belongs_to_many :reports
end
class Report < ActiveRecord::Base
has_and_belongs_to_many :region
has_and_belongs_to_many :subjects
has_and_belongs_to_many :sorts
end
And i would like to get a count like
@sort.reports.count
The problem is get this query:
2011 Jan 14
0
[Rail3] How to construct full-text search for habtm associations
hi all, i''m new to this group and currently using Rails 3.0.3 and meta_where
0.9.10.
i''m considering how to make a full-text searching feature to my project,
and my models, for example, should be defined like below:
class Group < ActiveRecord::Base
has_and_belongs_to_many :users
# :title (string)
end
class Comment < ActiveRecord::Base
has_and_belongs_to_many :users
2011 Apr 16
0
adding HABTM association while creating a record
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
2006 Jun 05
7
Is HABTM Dying?
For a while, I''ve been getting that HMT is replacing HABTM. It appears that
HMT can do all of what HABTM can do and more. The question is: Should I stop
using HABTM? Let''s take a simple case:
A case has many categories
For a given category, there are certain valid statuses
Category
has_and_belongs_to_many :statuses
Status
has_and_belongs_to_many :categories
Question:
Is
2010 Jan 20
0
need help with nested forms and habtm
Hi,
I''m currently stuck with a problem I just can''t find a clever solution
for. I checked every tutorial, issuetracker, API reference I could
find but found nothing to "enlighten" me --> I desperately need your
help :-).
My Question is: is it possible to use nested forms for habtm
associations?
--> Here some more info about what I wanted to do and what failed