Question

I find that the the config/environment.rb file looks different in Rails version 3.0.
Also when i add the line “config.gem “authlogic”.To environment.rb file

Answer 1

For Rails 3, you no longer edit config/environment.rb. You edit Gemfile, adding

gem 'authlogic'

to it, and then do a

bundle install

more info: http://gembundler.com/rails3.html

---

There will be a Gemfile.lock, and it lists all the gems and their versions in your project. Bundler’s docs:

Whenever your Gemfile.lock changes,
always check it in to version control.
It keeps a history of the exact
versions of all third-party code that
you used to successfully run your
application.

When your co-developers (or you on
another machine) check out your code,
it will come with the exact versions
of all the third-party code your
application used on the machine that
you last developed on (in the
Gemfile.lock). When they run
bundle install, bundler will find the
Gemfile.lock and skip the dependency
resolution step. Instead, it will
install all of the same gems that you
used on the original machine.