Get rid of extra_conditions param from configure_dependency_for_has_many. I can't see a particularly plausible argument for this being used by plugins, and if they really want they can just redefine the callback or whatever. Note also that before my recent commit the extra_conditions param was completely ignored for :dependent => :destroy.

Refactor configure_dependency_for_has_many to use AssociationCollection#delete_all. It was necessary to change test_before_destroy in lifecycle_test.rb so that it checks topic.replies.size *before* doing the destroy, as afterwards it will now (correctly) be 0.

Don't be so picky on MissingTemplate error details, this fails randomly on 1.8.7 because of not ordered hash

[#6044 state:committed]
Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

It turns out aptitude has been removed from Ubuntu 10.10
and while you can manually install it, apt-get is the
blessed package manager. Google for "aptitude removed
from Ubuntu" for more details. Thanks to Rafael Mendonça
França for pointing this out.

since a lot of people use Ubuntu, document specific aptitude calls for some C dependencies in the contrib guide

can be passed. There were no tests for this case.

This patch adds a test for :rescuable => true
option.

* adds instructions for PostgreSQL
* adds references to mysql2 here and there
* puts documentation contributions on par with code contributions
* adds a section about Rails Contributors
* documents C dependencies for Nokogiri and the database libs
* everything double-checked and revised step by step
* adds a section about warnings in the test suite
* removes section about the Rails wiki
* title and filename renamed
* overall rewording

After 304d38c0 we don't need the
new_record? check anymore.

Added information about invoking migrations in non-default environments to NOTE box in the "Getting Started" guide

Reason: When the guide already mentions "default environment", I think it is more then appropriate to tell the whole story.

Fixed incorrect instructions for calling the `rails` command explicitely in the "Getting Started" guide

Added TIP box with information about the `--database` switch for the application generator in the "Getting Started" guide

Fixed incorrect command for displaying options for new application Generator in Getting Started guide