Displaying 20 results from an estimated 3000 matches similar to: "Beginner Question."
2006 Nov 02
4
Still Having Problems With :through When Going To Same Table... Help... please :-(
I am having a problem with doing a :through that goes back to the same table.
The following are my two classes:
>>>>>
class User < ActiveRecord::Base
has_many :spanks
has_many :spanked, :through => :spanks, :source => :spanked_user
has_many :was_spanked_by, :through => :spanks, :source => :user
end
class Spank < ActiveRecord::Base
belongs_to :spanker,
2006 Feb 14
6
Multiple associations to the same class
Hi,
I cannot seem to create associations like this:
class Project < ActiveRecord::Base
belongs_to :manager, :class_name => ''User'', :foreign_key => ''manager''
belongs_to :liaison, :class_name => ''User'', :foreign_key => ''liaison''
end
p = Project.new
p.manager
=> 1
trying to retrieve associated objects
2006 Mar 31
3
Complex Through Statement
Quick Overview:
I have an ''Employee'', some ''Merchants'' and some ''Products''. A
''Merchant'' has many ''Products''. An ''Employee'' has multiple ''Merchants'',
depending on their relationship. For example, the Employee may be the
enrollment contact for one merchant and the
2008 Jun 13
6
Newbie question on has_many
I have two classes: a Widget and a User. The User has an id that is
referenced in two places on the Widget: owner_id and operator_id.
How should I structure that reference for has_many?
Thanks folks - I appreciate any help on this.
--David
--~--~---------~--~----~------------~-------~--~----~
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2006 Jul 07
3
Newbie Model question (HABTM?)
All,
If I have a table that has several discrete fields that all point to
the same associated field, how do I model it.
Specifically,
If I have a project table that has 2 fields: specifying_company, and
responsible_company.
And one table of associated companies, how do I do the :belongs_to /
:has_many stuff
ie. For a given project company A may be writing the spec, but company
B may be paying
2006 Mar 29
3
Self-referential many-many joins with :through
I thought I had this nailed but.. now I''m seeing spots..
I''ve included my models below, feel free to ignore them. I''m really
just after an example that works. I couldnt find one on the wiki...
which is fair enough considering Ricks patch:
http://dev.rubyonrails.org/changeset/4022 that fixed them only went
through 5 days ago..
Cheers
-henster
2006 Jan 09
3
Include with two references of one model of the same table
Hey guys,
I just came across this oddity, not sure what to make of it yet, but
I think it might be incorrect behavior. When doing a @inst.find(:all,
:include => ["hometeam", "awayteam"] ...) hometeam and awayteam are two
references from a belongs_to that is of the same model and of the same
table. I will get a pgerror stating that "matches", which is
2005 Dec 14
5
belongs_to and multiple foreign keys
Hi all,
I''m confused about how I''m supposed to specify a belongs_to relationship when
the table includes multiple columns that reference the same parent table.
In my case I have a "schedules" table with "opened_by" and "closed_by" columns,
that both reference the "users" table. In theory, they can be two different
user ids.
table
2006 Aug 02
2
Self-Referential has_many :through
Hello all.
I am trying to create a self-referential has_many :through. I used the
following site as a guide
http://blog.hasmanythrough.com/articles/2006/04/21/self-referential-through
but it still doesn''t appear to be working. I have two models. Person and
Relationship. A person has many contacts (Which is another person)
through relationships
class Person < ActiveRecord::Base
2007 Jun 09
7
create 2 fk referencing the same table
Hi everyone! I have a problem with defining 2 fk referencing the same
table. I have a Program table and a Team table. The Program should
have an away team and a home team fk. From my understanding, "the fk
column should be named after the class of the target table, converted
to lowercase, with _id appended". But, in my case, I have 2 fk
referencing the same table. How can I do this?
2005 Dec 19
4
need some help designing my messaging system
I am trying to create a messaging system for my users but I''m having a
hard time designing my db. This is what i have in mind, but I am not
sure if its the best approach.
user has_one inbox
user has_one outbox
inbox has_many messages
outbox has_many messages
inbox table
user_id
outbox table
user_id
messages table
box_id (refers to either inbox or outbox - how?)
from_id
to_id
2006 May 28
7
Self-referential has_many :through relationship
Hi,
I have a self-referential has_many :through relationship setup to
track relationships between users. Basically relationships are
modeled as a join table with an extra column ''relation''.
create table relationships (
user_id integer unsigned not null,
friend_id integer unsigned not null,
relation char(1) not null,
)
--- relations ---
f = friend
r = request to
2006 Mar 07
6
fcgi dispatcher crashing
I''m trying to set deploy an app on apache2 with the fcgid module, but can''t
seem to get anywhere.
Things work fine with cgi, but when i switch to fcgi, i''m stuck with a ''503:
Service Temporarily Unavailable''. There''s no error being logged anywhere,
afaik.
Trying to run dispatch.fcgi from the shell doesn''t work either. It bombs
out,
2006 Jun 29
4
Multiple belongs_to
Let''s say I have a catalog with hotels. Each hotel belongs to a
category (4-star, 5-star etc.) This is it''s official category.However,
there is also a category that users assign and a category that
"independent reviewers" assign. So I have this:
hotels {
id,
category_id,
reviewer_category,
user_category
}
categories {
id,
name
}
class Hotel <
2006 Mar 15
1
Through method problems with custom foreign_keys
A person has a many company_branches and
A company_branch has many people.
This join is represented using a "contacts" table.
I am using a legacy schema so i am forced into using non-standard rails
primary keys. I am using the new through relationship in rails 1.1.
p=Person.find(1)
b=p.company_branches # gives this error:
ActiveRecord::StatementInvalid: OCIError: ORA-00904:
2005 Apr 27
4
has_many syntax
Hi all,
I have the following inside of an AR class definition:
relationships=ActiveRecord::Base.connection.select_all(my_relationships_sql)
relationships.each do |relationship|
has_many RelatedItems, :class_name => relationship[''RelatedClass''],
:foreign_key => relationship[''ForeignKey'']
end
This kind of works, but how can I assign the name of the
2007 Oct 16
8
Using multiple foreign keys in views
I have a model, Game, that has_many :teams. There''s a home team and an
away team. I created two foreign keys, so each game can have two teams
associated with it. Here''s the Team model:
class Team < ActiveRecord::Base
belongs_to :game,
:class_name => ''Game'', :foreign_key => ''hometeam_id''
belongs_to :game,
:class_name =>
2006 Apr 21
3
polymorphic,has_many through can not work?
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
2006 Oct 22
3
Keeping DRY - I like a simple life!
Hi,
I''m new to Ruby and Rails and I would be very grateful for some advice.
I''ve got the following code.
class Foo < ActiveRecord::Base
include Versionable # Some methods to handle my versioned objects
has_many :versions, :class_name => "FooVersion", :foreign_key =>
"parent_id"
belongs_to :curr, :class_name => "FooVersion",
2006 Apr 04
4
Aggregating two objects of the same type
I would like to have a customer that has references to two addresses,
a billing address and a shipping address. In a non-rails environment
I would have two keys in the customers table, billing_address_id and
shipping_address_id to reference the addresses. It appears that
ActiveRecord expects the parent id to reside in the child table,
regardless of whether the relationship is one-to-one or