Displaying 20 results from an estimated 20000 matches similar to: "Request for review of STI/eager-loading patch"
2010 May 07
1
Can't eagerly load a polymorphic association defined in an STI parent class?
If I define an association (in my case a polymorphic one) in an STI
parent class, and try to eagerly load it in a subclass, I get the
following error:
ActiveRecord::ConfigurationError: Association name ''myassoc'' was not
found; perhaps you misspelled it?
If I redefine the same association again in the STI subclass, it
works.
Is this a bug or what?
--
You received this message
2006 Jul 31
0
Patch for #3438: Eager loading doesn''t respect :order of associations
Hello all,
I still have a patch for #3438 (eager loading doesn''t respect
association orders); it passes all unit tests, and has additional unit
tests with full coverage. The patch is attached.
== The Bug ==
Author.find(1).posts != Author.find(1, :include => [:posts]).posts
if Author has_many :posts, :order => anything.
This means that either one must avoid eager loading or
2006 Aug 04
2
problem eager loading with sti
Here''s the setup (working off Rails 1.1.4):
Class Project
belongs_to :employee
Class Employee < Person
has_many :projects
When I try to paginate(:employees, :include =>
:projects) I get the error "Association named
''projects'' was not found; perhaps you misspelled it?"
I can :include other models that the Person class
has_many or habtm of, and if I
2006 Feb 12
3
Error when Eager Loading "Not unique table/alias"
Hi list,
I get the error "Not unique table/alias" (myql 4.1) when trying eager
load 2 classes that use the same base class (not STI)
Example:
<code>
class Wedding < ActiveRecord::Base
belongs_to :bride, :class_name => ''Person'', :foreign_key => ''bride_id''
belongs_to :groom, :class_name => ''Person'',
2007 Mar 09
0
Eager loading with inheritance
In order to implement inheritance (STI was not ideal), I have
implemented a solution similar to what is described in this post:
http://www.ruby-forum.com/topic/73822#108686. I have one model that
acts as a parent class with shared attributes, two child models with
different attributes, and a module that contains shared functionality
for the child models.
The issue arises in creating associations
2007 Sep 25
2
Patch Review for selective joining of eager-loaded tables in pre-query
For those of you following the earlier saga of the performance of limited
eager loading, I''ve decided to give up on pursuing my original patch. I
received some support on the simplification argument (see my blog if you
don''t know what I''m talking about), but it doesn''t seem like it''s worth
breaking existing behavior.
So I''m moving onto
2006 Mar 31
2
Eager loading of polymorphic associations
Polymorphic associations work great until I try to do some eager
loading through :include. In my example, the interface name is
":imagehaver". Here''s my little eagerly loading find line:
Image.find(params[:id], :include => :imagehaver)
All it gives me is an ActiveRecord::EagerLoadPolymorphicError with no
further explanation. I haven''t been able to dig up anything
2008 May 08
1
Eager loading of association extensions
Hello all,
Is it possible to do eager loading of association extensions?
That is, the following code produces one SQL query:
cat = ProductCategory.find(:first, :include => :pricing_rules)
cat.pricing_rules
But if in ProductCategory I have an association extension like this:
has_many :pricing_rules do
def applicable()
find(:all).select(&:applicable?)
end
end
the
2007 Nov 08
0
Dynamic relation with eager loading
A model has 2 columns in its table
asset_type_id
asset_id
the asset_type_id links directly to the table asset_types via a
belongs_to
asset_types contains a single column ''name''
method_missing in the model says when you call a method matching
/^asset.*/
call the corresponding method substituting ''asset'' for the contents of
asset_type.name
(ie. the name in
2006 Sep 13
1
Eager loading with acts_as_tree
So I have a model that acts_as_tree and I run a method on a collection
of all of these records. This method walks the tree and fetches the
parent/children, etc. This results in many, many duplicate SQL queries
to be executed. Is there a way to eagerly load all of these models?
Something along the lines of:
Model.find(:all, :include => [:children, :parent])
If I execute the above statement, I
2007 Mar 21
1
Eager Loading with custom :finder_sql
Is there any way to do eager loading when using custom :finder_sql ?
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org
To unsubscribe from this group, send email to
2008 Jan 04
1
eager loading and polymorphic associations
There is a dedicated section about eager loading in the docs. A
coworker discovered eager loading does not work in polymorphic
associations the hard way :-) so I''ve written a patch that documents it:
http://dev.rubyonrails.org/ticket/10610
There are at least a couple of tickets that implement something that
would change that though:
http://dev.rubyonrails.org/ticket/9640
2010 Oct 25
1
A few fixes to eager loading issues
Hey all,
I''d really appreciate some eyes on https://rails.lighthouseapp.com/projects/8994-ruby-on-rails/tickets/5845-activerecord-3-eager-loading-fail#ticket-5845-19. There''s a small issue in Rails 3 eager loading, and this ticket has an accompanying patch.
Sssociations that show up twice in a Relation chain like:
Article.includes(:comments).includes(:comments =>
2010 Feb 14
2
has_many :through eager loading only loading one record
Hello,
I''ve been using Rails for years, including has_many :through and eager
loading, but this one has me stumped.
The problem is that Active Record is only eager-loading the first of
many records. Here are the models (note set_table_name for a legacy
schema):
class Tag < ActiveRecord::Base
set_table_name ''tag''
end
class DishTag < Tag
has_many
2007 Aug 21
3
Eager Loading
is there a way to always eagerly load an associated object so that you
don''t have to put :include into every finder?
class Product <ActiveRecord::Base
belongs_to :user #always load user when product is loaded
end
Product.find(1).user.login
#1 query since user was loaded with the product, same as if i
used :include but I don''t want to have to specify it everywhere.
2008 Jun 25
1
"Complex" Eager Loads
Hey gang.
Is it possible to extend the eager load SQL at all? What I''m hoping
to do is eagerly load an associate that, in turn, joins in some data
from another table.
Many thanks,
James
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To post to this group, send email
2007 Dec 20
3
ActiveRecords Eager Loading
Hi,
I am doing an eager loading in ruby on rails using below statement
------------------------
Article.find(:all, :include => [:asset, :vote],
:conditions=>"assets.parent_id is null",
:order=>"stat_final_ranking desc", :limit=>20)
---------------------------------------
the above statement resulted in this expensive query.
2006 Oct 08
1
Two-way eager loading?
My problem is that I have two classes where the eager loading isn''t
working as well as I would hope...
Here are my two classes:
class Daynote < ActiveRecord::Base
belongs_to :userplace
class Userplace < ActiveRecord::Base
has_many :daynote, :dependent => true
When I show my userplaces, I want to get the associated daynotes with
them, so I am doing:
@userplace =
2007 Aug 02
2
STI functionality, but then with multiple tables
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
2007 Apr 26
1
eager loading not working in production mode
i have an eager load query as such:
@groups = ReviewQuestionGroup.find(:all,
:conditions => ["review_category_id = ?", @review.category.id],
:order => ''review_question_groups.position,
review_questions.position'',
:include => :questions)
in dev mode, this works fine... i get results like
@groups[0].questions.length = 13. in production, i