From: 7stud -- <bbxx789_05ss@...>
Date: 2011-08-31T14:10:50+09:00
Subject: Re: Rails 3.1.0 has been released!

Aaron Patterson wrote in post #1019311:
> Hi everybody!
>
> It's been 3 Months since RailsConf, so I think it's time we released
> Rails 3.1.0.  So, here it is!  I've released Rails 3.1.0!
>
> ## CHANGES
>
> For a much more attractive and easy to read list of changes, please
> check out the awesome [Rails 3.1.0 Release Notes on the Rails Guides
> site](http://guides.rubyonrails.org/3_1_release_notes.html).
>

Trying to read raw html is not awesome:


<div class="code_container">
<pre class="brush: ruby; gutter: false; toolbar: false">has_many
:things, :conditions => proc { ["foo = ?", bar] }
</pre><p></p>
</div>
<p></p>
<ul>
    <li>Previously <tt>:insert_sql</tt> and <tt>:delete_sql</tt> on
<tt>has_and_belongs_to_many</tt> association allowed you to call
‘record’ to get the record being inserted or deleted. This is now passed
as an argument to the proc.</li>
</ul>
<ul>
    <li>Added <tt>ActiveRecord::Base#has_secure_password</tt> (via
<tt>ActiveModel::SecurePassword</tt>) to encapsulate dead-simple
password usage with BCrypt encryption and salting.
<div class="code_container">

<div class="code_container">
<pre class="brush: ruby; gutter: false; toolbar: false">
    <li>Schema: User(name:string, password_digest:string,
password_salt:string)
class User < ActiveRecord::Base
  has_secure_password
end
</li></pre>
</div>

</div></li></ul>
<ul>
    <li>When a model is generated <tt>add_index</tt> is added by default
for <tt>belongs_to</tt> or <tt>references</tt> columns.</li>
</ul>
<ul>
    <li>Setting the id of a <tt>belongs_to</tt> object will update the
reference to the object.</li>
</ul>
<ul>
    <li><tt>ActiveRecord::Base#dup</tt> and
<tt>ActiveRecord::Base#clone</tt> semantics have changed to closer match
normal Ruby dup and clone semantics.</li>
</ul>
<ul>
    <li>Calling <tt>ActiveRecord::Base#clone</tt> will result in a
shallow copy of the record, including copying the frozen state. No
callbacks will be called.</li>
</ul>
<ul>
    <li>Calling <tt>ActiveRecord::Base#dup</tt> will duplicate the
record, including calling after initialize hooks. Frozen state will not
be copied, and all associations will be cleared. A duped record will
return <tt>true</tt> for <tt>new_record?</tt>, have a <tt>nil</tt> id
field, and is saveable.</li>
</ul>
<ul>
    <li>The query cache now works with prepared statements. No changes
in the applications are required.</li>
</ul>
<h3 id="active-model">7 Active Model</h3>
<ul>
    <li><tt>attr_accessible</tt> accepts an option <tt>:as</tt> to
specify a role.</li>
</ul>
<ul>
    <li><tt>InclusionValidator</tt>, <tt>ExclusionValidator</tt>, and
<tt>FormatValidator</tt> now accepts an option which can be a proc, a
lambda, or anything that respond to <tt>call</tt>. This option will be
called with the current record as an argument and returns an object
which respond to <tt>include?</tt> for <tt>InclusionValidator</tt> and
<tt>ExclusionValidator</tt>, and returns a regular expression object for
<tt>FormatValidator</tt>.</li>
</ul>
<ul>
    <li>Added <tt>ActiveModel::SecurePassword</tt> to encapsulate
dead-simple password usage with BCrypt encryption and salting.</li>
</ul>
<ul>
    <li><tt>ActiveModel::AttributeMethods</tt> allows attributes to be
defined on demand.</li>
</ul>
<ul>
    <li>Added support for selectively enabling and disabling
observers.</li>
</ul>
<ul>
    <li>Alternate <tt>I18n</tt> namespace lookup is no longer
supported.</li>
</ul>
<h3 id="active-resource">8 Active Resource</h3>
<ul>
    <li>The default format has been changed to <span
class="caps">JSON</span> for all requests. If you want to continue to
use <span class="caps">XML</span> you will need to set <tt>self.format =
:xml</tt> in the class. For example,</li>
</ul>
<div class="code_container">
<pre class="brush: ruby; gutter: false; toolbar: false">class User <
ActiveResource::Base
  self.format = :xml
end
</pre>
</div>
<h3 id="active-support">9 Active Support</h3>
<ul>
    <li><tt>ActiveSupport::Dependencies</tt> now raises
<tt>NameError</tt> if it finds an existing constant in
<tt>load_missing_constant</tt>.</li>
</ul>
<ul>
    <li>Added a new reporting method <tt>Kernel#quietly</tt> which
silences both <tt>STDOUT</tt> and <tt>STDERR</tt>.</li>
</ul>
<ul>
    <li>Added <tt>String#inquiry</tt> as a convenience method for
turning a String into a <tt>StringInquirer</tt> object.</li>
</ul>
<ul>
    <li>Added <tt>Object#in?</tt> to test if an object is included in
another object.</li>
</ul>
<ul>
    <li><tt>LocalCache</tt> strategy is now a real middleware class and
no longer an anonymous class.</li>
</ul>
<ul>
    <li><tt>ActiveSupport::Dependencies::ClassCache</tt> class has been
introduced for holding references to reloadable classes.</li>
</ul>
<ul>
    <li><tt>ActiveSupport::Dependencies::Reference</tt> has been
refactored to take direct advantage of the new <tt>ClassCache</tt>.</li>
</ul>
<ul>
    <li>Backports <tt>Range#cover?</tt> as an alias for
<tt>Range#include?</tt> in Ruby 1.8.</li>
</ul>
<ul>
    <li>Added <tt>weeks_ago</tt> and <tt>prev_week</tt> to
Date/DateTime/Time.</li>
</ul>
<ul>
    <li>Added <tt>before_remove_const</tt> callback to
<tt>ActiveSupport::Dependencies.remove_unloadable_constants!</tt>.</li>
</ul>
<p>Deprecations:</p>
<ul>
    <li><tt>ActiveSupport::SecureRandom</tt> is deprecated in favor of
<tt>SecureRandom</tt> from the Ruby standard library.</li>
</ul>
<h3 id="credits">10 Credits</h3>
<p>See the <a href="http://contributors.rubyonrails.org/">full list of
contributors to Rails</a> for the many people who spent many hours
making Rails, the stable and robust framework it is. Kudos to all of
them.</p>
<p>Rails 3.1 Release Notes were compiled by <a
href="https://github.com/vijaydev">Vijay Dev</a>.</p>

        <h3>Feedback</h3>
        <p>
          You're encouraged to help improve the quality of this guide.
        </p>
        <p>
          If you see any typos or factual errors you are confident to
          patch, please clone <a
href="https://github.com/lifo/docrails">docrails</a>
          and push the change yourself. That branch of Rails has public
write access.
          Commits are still reviewed, but that happens after you've
submitted your
          contribution. <a
href="https://github.com/lifo/docrails">docrails</a> is
          cross-merged with master periodically.
        </p>
        <p>
          You may also find incomplete content, or stuff that is not up
to date.
          Please do add any missing documentation for master. Check the
          <a href="ruby_on_rails_guides_guidelines.html">Ruby on Rails
Guides Guidelines</a>
          for style and conventions.
        </p>
        <p>And last but not least, any kind of discussion regarding Ruby
on Rails
          documentation is very welcome in the <a
href="http://groups.google.com/group/rubyonrails-docs">rubyonrails-docs
mailing list</a>.
        </p>

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