similar to: non-optimal sql

On 2020/7/16 ??3:23, Eli Cohen wrote: > Add a front end VDPA driver that registers in the VDPA bus and provides > networking to a guest. The VDPA driver creates the necessary resources > on the VF it is driving such that data path will be offloaded. > > Notifications are being communicated through the driver. > > Currently, only VFs are supported. In subsequent patches we will

Hopefully the subject line didn''t scare you. That said... I have a simple polymorphic relationship (is that possible?): class Part has_many :attachments, :as => :attachable end class Attachment belongs_to :attachable, :polymorphic => true end Calling Part.find(:first).attachments yields this SQL error: ActiveRecord::StatementInvalid: Mysql::Error: Unknown column

On Mar 23, 2012, at 4:46 PM, Bill Wendling wrote: > You need to look at how the equivalent code in C++ looks in LLVM IR. The "do something with x & y" part will be an 'invoke' that lands on at landing pad, where you will then call the d'tor to your allocated object. OK, after a lot of tinkering (and looking at the ExceptionDemo.cpp file), I have something that works

My app has an association that''s got me scratching my head. I have Users, and Images. A User has many Images. (Yes, another picture sharing app, but it''s for a small niche, and it doesn''t end in -r!) I would like to express a "Favorite" relationship between both Users to Users, and Users to Images. This seems like the opposite of the standard

Hi, my webapp has registered users and it has articles, blog posts, gossips too. For all these resources I''ve a polymorphic Comment model which is listed below. <pre> id content commentable_id commentable_type user_id created_at updated_at 1 Frist comment 2 Article 1 .... 2 Second comment 3 Post 2 .....

Hey all, Could use a few eyes on a couple of very simple patches at https://rails.lighthouseapp.com/projects/8994/tickets/6262 if any has some time. The issue (from the ticket description): If you define a polymorphic belongs_to association and it has conditions on it, those conditions cause a NameError when you try to access the target object, of the style saying "hey, there''s no

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

I am unable to call a polymorphic scope using the searchlogic plugin as it keeps on returning ''undefined method''. I am certain it is only a problem within my project as I created a test project and I was able to call a polymorphic scope using the searchlogic plugin. I am hoping someone can provide a suggestion on how to debug this issue. My project consists of several gems, and

i''m trying to get :through associations working per the wiki: http://wiki.rubyonrails.com/rails/pages/ThroughAssociations i follow the instruction to the t, with the exception that i''m trying to use it with a polymorphic association. here are the associations in my models: Collection has_many :collectings Collection has_many :collectables, :through => collectings Collecting

I would like to associate a ‘product’ model with 3 models inherited from ‘image’: part, action and accessory. I have it working with Has_many :through relating products to images through attachments, I then have to determine the ‘type’ of the STI extension. This means i have to go product.images. While this is ok, i can see it getting tricky when i want to go products.images <<

Hi, I''m currently having the situation where I have to implement a polymorphic has_and_belongs_to_many by introducing an in between model that handles all the "has_many :as" and "belongs_to :polymorphic" association implementations... and is not doing anything else. Thing I don''t like it here is, I am unnecessarily loading AR instances only to execute SQL

I am using RoR ActiveRecord polymorphic inheritance and was wondering if it''s possible to access the base class'' association methods in the invocation of either to_xml or to_json without having to depict the base class data in the serialized string. Here are my classes: # base class class Asset < ActiveRecord::Base belongs_to :resource, :polymorphic => true

On Fri, Feb 15, 2019 at 11:08 AM Gustavo A. R. Silva <gustavo at embeddedor.com> wrote: > > In preparation to enabling -Wimplicit-fallthrough, mark switch > cases where we are expecting to fall through. > > Warning level 3 was used: -Wimplicit-fallthrough=3 > > Notice that, in some cases, the code comment is modified > in accordance with what GCC is expecting to find.

In order to coerce Rails 1.2.x into supporting Unicode values for an attribute in a model, I found I had to do the following: 1) Change the underlying column type from varchar to nvarchar. 2) Prepend any quoted values going into nvarchar columns with a capital-letter-N, e. g. ''unicode'' becomes N''unicode'' In order to accomplish this, I modified

As great as Rails 2.1 is, I for the life of me cannot figure out why polymorphic associations do not support reconfiguring the type column used. For example, I have no way to do a polymorphic association using a lookup hash which maps an integer to a class name. Storing a TINYINT unsigned is waaaaay more efficient than storing a string like "SomeActiveRecordModel" over and over again.

I am trying to build a shared-appointment system, where users can subscribe to appointments and be updated whenever changes are made to them. I have three objects in this system, appointments, users, and subscribers. Subscribers are a polymorphic object like so: class Subscriber < ActiveRecord::Base belongs_to :user belongs_to :subscribable, :polymorphic => true end The tricky part is

im having an issue where my my polymorphic associations arent being deleted when using accepts nested attributes there are other accepts_nested_attributes being used and they are deleting fine, just the polymorphic association before i go down the path of intense thrashing at this...is this a known issue or problem? -- Posted via http://www.ruby-forum.com/. -- You received this message because

I am having trouble with an many to many polymorphic association with STI involved. The problem is described clearly in the following StackOverflow question, so I will leave this thread short: http://stackoverflow.com/questions/6582074/activerecord-has-many-through-polymorphic-associations-with-sti I am posting here hoping to get advice/direction/a solution for this, as I''ve so far been

I can design basic Rails models without any trouble, and I feel pretty comfortable at the mysql command prompt. But some of these new database features in Rails 1.1 have me scratching my head: polymorphic associations, join models, etc. What is all that? I think I need a book that covers the advanced database topics one would need to know as a Rails developer -- not necessarily

Hello all, I''m having a strange issue with a model that belongs_to two other models. The one association is polymorphic and the other is normal. ================================ class Role < ActiveRecord::Base belongs_to :user belongs_to :permission, :polymorphic => true end class User < ActiveRecord::Base has_many :roles has_many :programs, :through => :roles end