# Object Level Transactions **URL:** \ **Category:** Rails\ **Created:** [February 5, 2008, 12:17am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093 "2008-02-05T00:17:50Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 5, 2008, 12:17am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/1 "2008-02-05T00:17:50Z")
In the README file of the ActiveRecord docs ([http://api.rubyonrails.com/files/vendor/rails/activerecord/README.html](http://api.rubyonrails.com/files/vendor/rails/activerecord/README.html)) it says: Transaction support on both a database and object level. The latter is implemented by using Transaction::Simple # Just database transaction Account.transaction do david.withdrawal(100) mary.deposit(100) end # Database and object transaction Account.transaction(david, mary) do david.withdrawal(100) mary.deposit(100) end But the second case does not seem to actually be implemented. Test case: from script/console I run irb\> a = Account.create =\> #\ irb\> Account.transaction do irb\* a.deposit(10.00) irb\> raise irb\> end RuntimeError: [[snip]] irb\> a.balance #Oops db didn’t change but object did =\> 10.0 irb\> a.reload =\> #\ irb\> Account.transaction(a) do #this should fix it irb\* a.deposit(10.00) irb\> raise irb\> end ArgumentError: wrong number of arguments (1 for 0) from (irb):23:in `transaction’ from (irb):23 What am I doing wrong here? ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 5, 2008, 12:46am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/2 "2008-02-05T00:46:08Z")
On 05 Feb 2008, at 00:17, Starr T. wrote: > ``` > david.withdrawal(100) > mary.deposit(100) > > ``` > > end > > # Database and object transaction > > Account.transaction(david, mary) do > david.withdrawal(100) > mary.deposit(100) > end Object level transactions have been deprecated in Rails 2, but you can use a plugin to restore its functionality: [http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-](http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-) object-transactions-are-out Best regards Peter De Berdt ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 5, 2008, 10:13pm UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/3 "2008-02-05T22:13:36Z")
Peter De Berdt wrote: > On 05 Feb 2008, at 00:17, Starr T. wrote: > > Object level transactions have been deprecated in Rails 2, but you > can use a plugin to restore its functionality: > [http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-](http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-) > object-transactions-are-out > > Best regards > > Peter De Berdt Shouldn’t this reference be removed from the documentation then? ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 6, 2008, 12:03am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/4 "2008-02-06T00:03:00Z")
Peter De Berdt wrote: > On 05 Feb 2008, at 22:13, Starr T. wrote: > > > > Object level transactions have been deprecated in Rails 2, but you > > > can use a plugin to restore its functionality: > > > [http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-](http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-) > > > object-transactions-are-out > > > > Shouldn’t this reference be removed from the documentation then? > You should only rely on well generated api docs on your local > computer and the official docs at [api.rubyonrails.com](http://api.rubyonrails.com) (local docs > install is still best, especially if you’re on edge) > > Best regards > > Peter De Berdt Please take a look at the official docs here: ([Peak Obsession](http://api.rubyonrails.com/files/vendor/rails/activerecord/README.html)) What I quoted if from the 8th bullet point down. I do us my locally generated RDocs but I cannot link to them very well can I? ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 6, 2008, 9:40am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/5 "2008-02-06T09:40:25Z")
On 06 Feb 2008, at 00:03, Starr T. wrote: > > install is still best, especially if you’re on edge) > > Please take a look at the official docs here: > ([Peak Obsession](http://api.rubyonrails.com/files/vendor/rails/activerecord/) > README.html) > > What I quoted if from the 8th bullet point down. > > I do us my locally generated RDocs but I cannot link to them very well > can I? 🙂 It must have slipped under the radar, I guess (it happens when it’s on a summary page). It would be nice if you could submit a patch for it so it doesn’t persist in later versions. Best regards Peter De Berdt ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 5, 2008, 11:48pm UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/6 "2008-02-05T23:48:34Z")
On 05 Feb 2008, at 22:13, Starr T. wrote: > > Object level transactions have been deprecated in Rails 2, but you > > can use a plugin to restore its functionality: > > [http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-](http://ryandaigle.com/articles/2007/3/20/what-s-new-in-edge-rails-) > > object-transactions-are-out > > Shouldn’t this reference be removed from the documentation then? I don’t know what site you are using, but I can’t find it in the official rails api docs at: [http://api.rubyonrails.com/classes/ActiveRecord/Transactions/](http://api.rubyonrails.com/classes/ActiveRecord/Transactions/) ClassMethods.html It does come up at [http://www.railsapi.org/ActiveRecord::Transactions::ClassMethods](http://www.railsapi.org/ActiveRecord::Transactions::ClassMethods) which means that unofficial rails api hasn’t been updated to the latest version. You should only rely on well generated api docs on your local computer and the official docs at [api.rubyonrails.com](http://api.rubyonrails.com) (local docs install is still best, especially if you’re on edge) Best regards Peter De Berdt ---
**Author:** ![startrader](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/a6a055/32.png) [@startrader](https://www.ruby-forum.com/u/startrader)\ **Post date:** [February 8, 2008, 1:36am UTC](https://www.ruby-forum.com/t/object-level-transactions/128093/7 "2008-02-08T01:36:53Z")
Peter De Berdt wrote: > On 06 Feb 2008, at 00:03, Starr T. wrote: > > > > install is still best, especially if you’re on edge) > > > > Please take a look at the official docs here: > > ([Peak Obsession](http://api.rubyonrails.com/files/vendor/rails/activerecord/) > > README.html) > > > > What I quoted if from the 8th bullet point down. > > > > I do us my locally generated RDocs but I cannot link to them very well > > can I? > > 🙂 > > It must have slipped under the radar, I guess (it happens when it’s > on a summary page). It would be nice if you could submit a patch for > it so it doesn’t persist in later versions. > > Best regards > > Peter De Berdt Patch #11052 submitted. Thanks for all you help [http://dev.rubyonrails.org/ticket/11052](http://dev.rubyonrails.org/ticket/11052)