Rails 3.1.0.rc8

Hi everyone,

Rails 3.1.0.rc8 has been released (we've an issue with rc7). This is
the final release candidate. Please give it a try, it's our last
chance to fix regressions and severe issues. We will be releasing
final 3.1.0 next August 30th.


Check the CHANGELOG file of each framework to see what we've changed.

You can find an exhaustive list of changes on
Along with the [closed issues marked for

You can also see issues [we haven't

A comprehensive CHANGELOG will be announced when 3.1.0 final is released.


I'm having an issue with rc8 on a very basic rails 3.1 demo app (all
it does is basic CRUD operations via ajax with jquery-rails). As such,
it just uses sqlite. Updating from rails 3-1-stable branch (rev:
a9980d17e92e5feb20a02afcbf7c3efcdf3368a9) to rc8 resulted in this
error when I try to access the app in the browser:

I downgraded to rails rc6, and got this error:

  Please install the sqlite3 adapter: `gem install activerecord-
sqlite3-adapter` (can't activate sqlite3 (~> 1.3.4), already activated
sqlite3-1.3.3. Make sure all dependencies are added to Gemfile.)

So I tried that, and ended up with this error:

Could not find gem 'activerecord-sqlite3-adapter (>= 0)' in any of
the gem sources listed in your Gemfile.

I looked through gemcutter and googled a bit and cannot find that gem
anywhere. I managed to find the sqlite2_adapter on the rails github,
but it just has a note recommending to upgrade to sqlite3 in rails 3.
I feel like I'm missing something incredibly simple, but can't figure
out what.

By the way, the trace for the ConnectionNotEstablished error, if it
helps, looks like this:

    Rendered /Users/steveschwartz/.rvm/gems/ruby-1.9.2-p0@jquery-rails/
rescues/_trace.erb (2.5ms)
    Rendered /Users/steveschwartz/.rvm/gems/ruby-1.9.2-p0@jquery-rails/
rescues/_request_and_response.erb (38.3ms)
    Rendered /Users/steveschwartz/.rvm/gems/ruby-1.9.2-p0@jquery-rails/
rescues/diagnostics.erb within rescues/layout (163.3ms)

Also, here is the repo for the app: https://github.com/JangoSteve/Rails-jQuery-Demo

-Steve Schwartz (@jangosteve)

FYI, I was finally able to get all of this resolved by upgrading the sqlite3 gem from v1.3.3, to 1.3.4, but holy cow that was a lot more difficult to figure out than it probably should have been.

-Steve Schwartz (@jangosteve)