removing a tag from a record affects to all records having the same tag name.

[github0013]

environments

$ ruby -v
ruby 2.0.0p451 (2014-02-24 revision 45167) [x86_64-darwin13.1.0]

$ uname -a
Darwin test.local 13.1.0 Darwin Kernel Version 13.1.0: Wed Apr  2 23:52:02 PDT 2014; root:xnu-2422.92.1~2/RELEASE_X86_64 x86_64

I prepared a repo for this issue.

git clone https://github.com/github0013/tag_issue.git
bundle
rake db:create; rake db:migrate
rails c

then run this

%w[one two three].each{|name| Post.create name: name, tag_list: "a,b,c" }
Post.all.each{|post| p post.tag_list }
# will return 3 lines
# ["a", "b", "c"]
# ["a", "b", "c"]
# ["a", "b", "c"]

Post.last.update tag_list: "a,b" # remove tag "c" ONLY from the last record

Post.all.each{|post| p post.tag_list }
# will return 3 lines.  tag "c" is removed from all records... why?
# ["a", "b"]
# ["a", "b"]
# ["a", "b"]

I am only removing tag "c" ONLY from the last record, but tag "c" is removed from ALL.

[seuros]

Wow, thank you. That a serious bug, i will try to fix it today.

Tip : you can chain rake commands

rake db:create db:migrate

that way, if the first fail, the second won't be executed.

[seuros]

@github0013 , Thank you for reporting this bug and providing details

[github0013]

that was very quick fix.
now I can get back to my project, thanks! and the tip for rake command ;)

[cknoxrun]

It seems this is only fixed on master, or there has been a regression. I was still getting this issue on the latest release until pointing to master.

[seuros]

Can you double check ? The version in rubygem is exactly the one in master .

[cknoxrun]

Sigh, nevermind, it seems like spring didn't reload the gem when I updated it. Stopping spring and reloading the server fixed the issue. My bad.