Displaying 20 results from an estimated 70000 matches similar to: "Remote ActiveRecord relation (over network)"
2006 Jan 02
1
ActiveRecord, << or push_with_attributes: update if exists?
In the Agile Rails book, on page 232 (PDF, 4th edition) there is an
example of (within ActiveRecord) marking an article as read by a user at
the present time. Short example code (from the book) here:
class User < ActiveRecord::Base
has_and_belongs_to_many :articles
def read_article(article)
articles.push_with_attributes(article, :read_at => Time.now)
end
# ...
end
2006 Jan 02
2
ActiveRecord:
In the Agile Rails book, on page 232 (PDF, 4th edition) there is an
example of (within ActiveRecord) marking an article as read by a user at
the present time. Short example code (from the book) here:
class User < ActiveRecord::Base
has_and_belongs_to_many :articles
def read_article(article)
articles.push_with_attributes(article, :read_at => Time.now)
end
# ...
end
2006 May 28
1
ActiveRecord: FK constraints problem
Hi all.
I have has_and_belongs_to_many association between models: Section and
Content.
class Section < ActiveRecord::Base
acts_as_tree
has_and_belongs_to_many :contents
belongs_to :default_content, :class_name => ''Content'', :foreign_key =>
''default_content_id'', :dependent => :nullify
end
class Content < ActiveRecord::Base
belongs_to
2010 Jul 04
1
Rails 3: ActiveRecord .include not working
Really no idea what''s up...
class Auction < ActiveRecord::Base
has_and_belongs_to_many :categories
end
class Category < ActiveRecord::Base
has_and_belongs_to_many :auctions
default_scope order(''title'')
scope :active, where(:active => true)
end
class CategoriesController < ApplicationController
respond_to :html, :json
# GET /categories/:id
2005 Dec 14
0
how to get these records in has_and_belongs_to_many relation
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
2010 Aug 05
3
how to ? Rails 3 ActiveRecord eager loading and AREL
Hello everyone,
I would like to eager load scoped records to avoid queries executed in a
loop (huge performance impact).
The "scoped" part is what is giving me a hard time.
I''m using Rails3 RC.
Does anyone have any idea how I can do it?
Here is a test case : we have an "Article" and a "Comment" Activerecord
models,
article has many comments
comment
2010 Oct 11
8
Nooby Stuck - "has_and_belongs_to_many" relationship
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
2006 May 11
1
ActiveRecord collection_select and has_and_belongs_to_many
Hello everyone, first post to the list and a relative newbie to Rails
development. Done quite a bit of JSP, PHP, HTML, XML etc and thought I would
kick the tires on Rails to see if it can speed up development for internal
applications. Anyway, I am running into a problem that is just driving me
crazy and everything I read on the net doesn''t seem to help. I was hoping
someone here might
2006 Jan 12
0
HABTM with conditional field in relation table
Hi all
I have members in my application, and every member can assign other
members as buddies.
class Member < ActiveRecord::Base
# Hat folgende Buddies
has_and_belongs_to_many :buddies,
:class_name => ''Member'',
:join_table => ''members_have_buddies'',
2011 Nov 03
0
Arel table aliases and ActiveRecord::Relation help: how to specify "multiple has_many items in a query"
What is the recommended way to use table aliases with
ActiveRecord::Relation these days?
In prior versions of Rails, this would work:
assume (pseudo code):
model A
has_many b''s
model B
,,,
at = B.arel_table
atalias = at.alias(at.name + "_1")
A.join(:b).join(atalias).where(atalias[:a_id].eq(at[:a_id]).where("b.widget
=
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
2005 Mar 26
2
ActiveRecord help needed
Hello, my name is Magnus and I am a RoR-newbie. I am trying to get the
grip of ActiveRecord but I am having trouble to find good examples.
I have been looking at this:
http://wiki.rubyonrails.com/rails/show/AccessControlListExample
Where you can find this Model code:
require ''active_record''
class Permission < ActiveRecord::Base
has_and_belongs_to_many :roles
end
2013 Mar 28
1
undefined method 'sanitize_limit' for #<ActiveRecord::Relation:0x2aaaad35d720>
I am trying to upgrate rails from 3.0 to 3.1, while updating rails version
I am getting following error
rake aborted!
undefined method `sanitize_limit'' for
#<ActiveRecord::Relation:0x2aaaad35d720>
/some_package/lib/ruby/gems/1.8/gems/activerecord-3.1.12/lib/active_record/relation.rb:460:in
`method_missing''
2006 Jul 24
3
HowTo?: Eager caching of third order ActiveRecord assoc.
Hello.
Using the ":include", which generates a "LEFT OUTER JOIN" SQL command,
it is possible to eagerly preload second order data objects (children)
for a given association.
I wanted to know, if it is possible to eagerly preload and cache
third order (or more) data objects, which are little-children or
little-little-children. As I''ve seen. it is possible to add
2010 Jun 20
0
ActiveRecord and ARel: correlated subqueries?
I''m trying to figure out how to use ActiveRecord in conjunction with
ARel. In particular, I''d like to replace my residual literal SQL with
ARel, if only I could see how.
Let''s take Article with multiple Versions as an example. With ARel
alone, I can find articles with their latest versions like this
articles = Article.arel_table
versions = Article.arel_table
2006 Jan 09
4
Problem with habtm and resulting SQL insert
Cheers,
I have a problem with 1.0 and a habtm relationship between User and Article.
I want to save all articles that users read. I have these models:
class User < ActiveRecord::Base
has_and_belongs_to_many :read_articles, :class_name => "Article",
:join_table => "read_articles"
...
end
class Article < ActiveRecord::Base
has_and_belongs_to_many :readers,
2006 Mar 21
3
Newbie - ActiveRecord relationships
So I''ve worked through Agile Web Development with Rails and I''m now
trying my first little app to get into the swing of things. Its a task
tracking app where people can create tasks and assign them to others,
and also log time against the tasks.
I''m having trouble working out the model relationships. This is what
I''ve got so far, but its not right as
2006 Jan 17
0
Overriding Delete/Destroy in ActiveRecord
Anybody know how I can override delete/destroy in objects that have
has_and_belongs_to_many behavior specified?
I''m having issues overriding delete for an ActiveRecord object that
contains a has_and_belongs_to_many relationship. Delete and destroy
are properly overridden for objects that do not have
has_and_belongs_to_many relationships specified, but as soon as I add
any the overridden
2006 Aug 02
1
ActiveRecord: find_or_create with has_and_belongs_to_many --
I am attempting to use find_or_create on a foreign table with a
has_and_belongs_to_many relationship with my current table. I am doing
the following:
term = school.terms.find_or_create_by_code("FALL06")
the queries in the log show the expected SELECT statement to query if
there is a join table record between the school and term with code
"FALL06":
SELECT * FROM term
INNER
2006 Oct 25
4
need help on special HABTM relation
hey all,
I have three tables like this:
forum (id,title)
usergroup(id,title)
forum_perms(usergroup_id,forum_id,read,write,post)
is there a way to deal with that kind of relation with rails such as by
using has_and_belongs_to_many kind of stuff?
thanx in advance
Pat
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