Rails: Problem with has_and_belongs_to_many

ruby-talk
1

hello,

I have an m:n relationsship (has_and_belongs_to_many) between the models
CoreUser and CoreGroup. So from some rails experience I thought I'd
be able to add a (user,group)-relation simply by doing
agroup.core_users << auser.

Unfortunately the following test-case fails on the last assertion
(unless I include the line that is commented out):

  def test_add_remove
    someuser = CoreUser.create!(:username => 'test2s', ...)
    ag = CoreGroup.find_by_path("/Administrators")
    assert !ag.core_users.include?(someuser)
    assert !someuser.core_groups.include?(ag)

    ag.core_users << someuser
# someuser.core_groups << ag
    assert ag.core_users.include?(someuser)
    assert someuser.core_groups.include?(ag)
  end

Shouldn't it work with the line being commented out (one direction)?

thanks,

···

--
Felix Natter

2

Phlip wrote:

Firstly, get on the Goole Ruby-on-Rails Talk forum. I know it's a pain in the nuts compared to USENET, but you need the best answers for these questions.

It's available as an NNTP feed on news.gmane.org as gmane.comp.lang.ruby.rails

Clifford Heath.

3

Felix Natter wrote:

hello,

I have an m:n relationsship (has_and_belongs_to_many) between the models

There's a whole mailing list dedicated to Ruby on Rails and populated with people who love to discuss RoR. While there are some Rails-ers here, you're going to get a lot more help on the RoR list. Find it here: http://www.rubyonrails.com/community

···

--
RMagick: http://rmagick.rubyforge.org/
RMagick 2: http://rmagick.rubyforge.org/rmagick2.html

4

Phlip wrote:

It's available as an NNTP feed on news.gmane.org as gmane.comp.lang.ruby.rails

And gmane reflects new posts properly back to the list??

The only time I ever tried that with GMain, to a Yahoo group, it didn't work, and I never tried again...

Yes, it bounces back a verification email the first time,
and then it just works.