# Svn externals and Edge Rails **URL:** \ **Category:** Rails\ **Created:** [February 22, 2006, 10:54pm UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082 "2006-02-22T22:54:14Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 22, 2006, 10:54pm UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/1 "2006-02-22T22:54:14Z")
Hi all: I am considering using edge rails so I can use join tables. I want to use svn:externals to manage edge rails, however I want to understand it more before I go and set everything up. so everytime I commit my app it will pull the most recent version of rails from the svn repository, right? What if the current version of rails is unstable, is there a way to rollback edgerails and NOT my app? does it update if I freeze\_edge? Does it update my local copy as well as what is being commited to the repository? Is there anything else I need to know about setting this up? Complications some people have had that would be good advice? ## Thanks! Randy S. removed\_email\_address@domain.invalid 267.334.6833 ---
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 22, 2006, 11:44pm UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/2 "2006-02-22T23:44:51Z")
On 22/02/06, Randy S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > about setting this up? Complications some people have had that would > be good advice? Commits and updates are independent between your local repository and part of workspace fetched using svn:externals. They are updated and committed independently of each other. How it works in real life? $ svn propset svn:externals ‘rails [http://dev.rubyonrails.org/svn/rails/trunk](http://dev.rubyonrails.org/svn/rails/trunk)’ vendor $ svn ci -m ‘Using edge rails’ $ svn up vendor/rails Now you have edge Rails version. From now on this works: $ svn up Will bring up to date your working copy, does not update vendor/rails $ svn ci Copy changes from your working copy to your svn repository. DOES NOT copy changes from vendor/rails neither to your repository nor Rails repository. $ svn up vendor/rails Updates your version of Rails to latest in Rails repository. DOES NOT touch your working copy. $ svn ci vendor/rails Tries to send your changes done to Rails to Rails repository. Will most likely fail (unless you have write access to Rails repo that is 🙂 ) So as you can see using svn:externals is quite safe. You may also choose specific revision to use when specifying svn:externals. This is useful if external repo has been tainted with some very disruptive change. In that case you just have to modify svn:externals like this: $ svn propset svn:externals ‘rails -r2756 [http://dev.rubyonrails.org/svn/rails/trunk](http://dev.rubyonrails.org/svn/rails/trunk)’ vendor $ svn ci -m ‘Using edge rails revision 2756, because 2757 breaks hell lose’ $ svn up vendor/rails And you have ‘safe’ version of edge rails. Of course this doesn’t change your own code at all. ---
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 22, 2006, 11:50pm UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/3 "2006-02-22T23:50:54Z")
Um, all I can say is WOW. That was very helpful. Much thanks! ---
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 22, 2006, 11:53pm UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/4 "2006-02-22T23:53:56Z")
Randy, It won’t pull the latest from rails svn site on commits, just updates. If you’re worried about instability you can set the svn:externals to get a particular revision # with the --revision option. That way it gives u a safety net. scott. * * * What’s an Intel chip doing in a Mac? A whole lor more that it’s ever done in a PC. My Digital Life - [http://scottwalter.com/blog](http://scottwalter.com/blog) Pro:Blog - [http://scottwalter.com/problog](http://scottwalter.com/problog) ----- Original Message ---- From: Randy S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) To: removed\_email\_address@domain.invalid Sent: Wednesday, February 22, 2006 3:52:06 PM Subject: [Rails] svn externals and Edge Rails Hi all: I am considering using edge rails so I can use join tables. I want to use svn:externals to manage edge rails, however I want to understand it more before I go and set everything up. so everytime I commit my app it will pull the most recent version of rails from the svn repository, right? What if the current version of rails is unstable, is there a way to rollback edgerails and NOT my app? does it update if I freeze\_edge? Does it update my local copy as well as what is being commited to the repository? Is there anything else I need to know about setting this up? Complications some people have had that would be good advice? ## Thanks! Randy S. removed\_email\_address@domain.invalid 267.334.6833 ---
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 23, 2006, 3:59am UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/5 "2006-02-23T03:59:54Z")
Hi ! 2006/2/22, Łukasz Piestrzeniewicz [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > $ svn propset svn:externals ‘rails > [http://dev.rubyonrails.org/svn/rails/trunk](http://dev.rubyonrails.org/svn/rails/trunk)’ vendor > $ svn ci -m ‘Using edge rails’ > $ svn up vendor/rails > > Now you have edge Rails version. From now on this works: > > $ svn up > > Will bring up to date your working copy, does not update vendor/rails This is wrong. vendor/rails WILL be updated, like this: $ svn up Fetching external item into ‘vendor\rails’ U vendor\rails\activerecord\test\reflection\_test.rb … U vendor\rails\railties\CHANGELOG Updated external to revision 3638. Hope that helps ! ---
**Author:** ![randy\_s](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/f9ae1b/32.png) [@randy\_s](https://www.ruby-forum.com/u/randy_s)\ **Post date:** [February 23, 2006, 7:34am UTC](https://www.ruby-forum.com/t/svn-externals-and-edge-rails/72082/6 "2006-02-23T07:34:25Z")
On 23/02/06, Francois B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Hope that helps ! > True, my mistake. But suppressing external updates is still possible > using --ignore-externals flag. This flag is also handy when checking > status of own repository.