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Dr Nic&#8217;s Magic Models
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<p><a href="/">&#x21A9; More Magic</a></p>
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<h1>Dr Nic&#8217;s Magic Models</h1>
<p>If you&#8217;ve used Ruby on Rails you&#8217;ll have written at least one model class like this:</p>
<p><pre class="syntax">
<span class="keyword">class </span><span class="class">Person</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="ident">has_many</span> <span class="symbol">:memberships</span>
<span class="ident">has_many</span> <span class="symbol">:groups</span><span class="punct">,</span> <span class="symbol">:through</span> <span class="punct">=&gt;</span> <span class="symbol">:memberships</span>
<span class="ident">belongs_to</span> <span class="symbol">:family</span>
<span class="ident">validates_presence_of</span> <span class="symbol">:firstname</span><span class="punct">,</span> <span class="symbol">:lastname</span><span class="punct">,</span> <span class="symbol">:email</span>
<span class="keyword">end</span>
</pre></p>
<p>A few minutes later you&#8217;ll have wondered to yourself,</p>
<blockquote>
Why do I have write my own <code>has_many</code>, <code>belongs_to</code>, and <code>validates_presence_of</code>
commands if all the data is in the database schema?
</blockquote>
<p>Now, for the very first time, your classes can look like this:</p>
<p><pre class="syntax">
<span class="keyword">class </span><span class="class">Person</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="keyword">end</span>
</pre></p>
<p>or, if you are lazy&#8230;</p>
<p><pre class="syntax">
<span class="keyword">class </span><span class="class">Person</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span><span class="punct">;</span> <span class="keyword">end</span>
</pre></p>
<p>or, if you read right to the end of this page, this&#8230;</p>
<p><pre class="syntax">
<span class="comment"># Go fish.</span>
</pre></p>
<p>Magic and mystery abound. All for you. Impress your friends, amaze your mother.</p>
<p><span class="caps">NOTE</span>: The gratuitous use of <strong>Dr Nic&#8217;s</strong> in the name should only enhance the mystical magikery,
for magic needs a magician; and I love magic. I always wanted to create my own magic trick.
So I shall be the magician for the sake of magic itself. I look a bit like Harry Potter too,
if Harry were 32 and better dressed.</p>
<h2>Installation</h2>
To install the Dr Nic&#8217;s Magic Models gem you can run the following command to
fetch the gem remotely from RubyForge:
<pre>
gem install dr_nic_magic_models
</pre>
<p>or <a href="http://rubyforge.org/projects/magicmodels">download the gem manually</a> and
run the above command in the download directory.</p>
<p>Now you need to <code>require</code> the gem into your Ruby/Rails app. Insert the following
line into your script (use <code>config/environment.rb</code> for your Rails apps):</p>
<pre>
require 'dr_nic_magic_models'
</pre>
<p>Your application is now blessed with magical mystery.</p>
<h2>David Copperfield eat your Ruby-crusted heart out</h2>
<p>Let&#8217;s demonstrate the magical mystery in all its full-stage glory. Create a Ruby on Rails app (example uses sqlite3, but use your favourite databas):</p>
<p><pre class="syntax">
<span class="ident">rails</span> <span class="ident">magic_show</span> <span class="punct">-</span><span class="ident">d</span> <span class="ident">sqlite3</span>
<span class="ident">cd</span> <span class="ident">magic_show</span>
<span class="ident">ruby</span> <span class="ident">script</span><span class="punct">/</span><span class="ident">generate</span> <span class="ident">model</span> <span class="constant">Person</span>
<span class="ident">ruby</span> <span class="ident">script</span><span class="punct">/</span><span class="ident">generate</span> <span class="ident">model</span> <span class="constant">Group</span>
<span class="ident">ruby</span> <span class="ident">script</span><span class="punct">/</span><span class="ident">generate</span> <span class="ident">model</span> <span class="constant">Membership</span>
</pre></p>
<p>Update the migration <code>001_create_people.rb</code> with:
<pre class="syntax">
<span class="keyword">class </span><span class="class">CreatePeople</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Migration</span>
<span class="keyword">def </span><span class="method">self.up</span>
<span class="ident">create_table</span> <span class="symbol">:people</span> <span class="keyword">do</span> <span class="punct">|</span><span class="ident">t</span><span class="punct">|</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:firstname</span><span class="punct">,</span> <span class="symbol">:string</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:lastname</span><span class="punct">,</span> <span class="symbol">:string</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:email</span><span class="punct">,</span> <span class="symbol">:string</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="keyword">end</span>
<span class="keyword">end</span>
<span class="keyword">def </span><span class="method">self.down</span>
<span class="ident">drop_table</span> <span class="symbol">:people</span>
<span class="keyword">end</span>
<span class="keyword">end</span>
</pre></p>
<p>Similarly, update the <code>def self.up</code> method of <code>002_create_groups.rb</code>
with:
<pre class="syntax">
<span class="ident">create_table</span> <span class="symbol">:groups</span> <span class="keyword">do</span> <span class="punct">|</span><span class="ident">t</span><span class="punct">|</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:name</span><span class="punct">,</span> <span class="symbol">:string</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:description</span><span class="punct">,</span> <span class="symbol">:string</span>
<span class="keyword">end</span>
</pre></p>
<p>and <code>003_create_memberships.rb</code> with:
<pre class="syntax">
<span class="ident">create_table</span> <span class="symbol">:memberships</span> <span class="keyword">do</span> <span class="punct">|</span><span class="ident">t</span><span class="punct">|</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:person_id</span><span class="punct">,</span> <span class="symbol">:integer</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="ident">t</span><span class="punct">.</span><span class="ident">column</span> <span class="symbol">:group_id</span><span class="punct">,</span> <span class="symbol">:integer</span><span class="punct">,</span> <span class="symbol">:null</span> <span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="keyword">end</span>
</pre></p>
And run your migrations to create the three tables:
<pre>
rake db:migrate
</pre>
<h3>And now for some <a href="http://en.wikipedia.org/wiki/List_of_conjuring_terms">woofle dust</a> ...</h3>
<p>At the end of <code>config/environment.rb</code> add the following line:</p>
<pre>
require 'dr_nic_magic_models'
</pre>
<p>Now, let&#8217;s do a magic trick. First, let&#8217;s check our model classes (<code>app/models/person.rb</code> etc):</p>
<p><pre class="syntax">
<span class="keyword">class </span><span class="class">Person</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="keyword">end</span>
<span class="keyword">class </span><span class="class">Group</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="keyword">end</span>
<span class="keyword">class </span><span class="class">Membership</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="keyword">end</span>
</pre></p>
<p>Nothing suspicious here. We have no validations and no associations. Just some plain old model classes.</p>
<p><span class="caps">UPDATE</span>: To turn on magic validations, you now need to invoke <code>generate_validations</code> on defined classes. So, update your model classes:</p>
<p><pre class="syntax">
<span class="keyword">class </span><span class="class">Person</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="ident">generate_validations</span>
<span class="keyword">end</span>
<span class="keyword">class </span><span class="class">Group</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="ident">generate_validations</span>
<span class="keyword">end</span>
<span class="keyword">class </span><span class="class">Membership</span> <span class="punct">&lt;</span> <span class="constant">ActiveRecord</span><span class="punct">::</span><span class="constant">Base</span>
<span class="ident">generate_validations</span>
<span class="keyword">end</span>
</pre></p>
<p>For this trick, we&#8217;ll need an ordinary console session. Any old one lying around the house will do.</p>
<pre>
ruby script/console
</pre>
<p>Now a normal model class is valid until you explicitly add <code>validates_xxx</code> commands.
With Dr Nic&#8217;s Magic Models:</p>
<p><pre class="syntax">
<span class="ident">person</span> <span class="punct">=</span> <span class="constant">Person</span><span class="punct">.</span><span class="ident">new</span>
<span class="punct">=&gt;</span> <span class="comment">#&lt;Person:0x393e0f8 @attributes={&quot;lastname&quot;=&gt;&quot;&quot;, &quot;firstname&quot;=&gt;&quot;&quot;, &quot;email&quot;=&gt;&quot;&quot;}, @new_record=true&gt;</span>
<span class="ident">person</span><span class="punct">.</span><span class="ident">valid?</span>
<span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="ident">person</span><span class="punct">.</span><span class="ident">errors</span>
<span class="punct">=&gt;</span> <span class="comment">#&lt;ActiveRecord::Errors:0x3537b38 @errors={</span>
<span class="punct">&quot;</span><span class="string">firstname</span><span class="punct">&quot;=&gt;[&quot;</span><span class="string">can't be blank</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">is too long (maximum is 255 characters)</span><span class="punct">&quot;],</span>
<span class="punct">&quot;</span><span class="string">lastname</span><span class="punct">&quot;=&gt;[&quot;</span><span class="string">can't be blank</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">is too long (maximum is 255 characters)</span><span class="punct">&quot;],</span>
<span class="punct">&quot;</span><span class="string">email</span><span class="punct">&quot;=&gt;[&quot;</span><span class="string">can't be blank</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">is too long (maximum is 255 characters)</span><span class="punct">&quot;]},</span>
<span class="attribute">@base</span><span class="punct">=</span><span class="comment">#&lt;Person:0x3538bf0 @errors=#&lt;ActiveRecord::Errors:0x3537b38 ...&gt;, @new_record=true, </span>
<span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">lastname</span><span class="punct">&quot;=&gt;</span><span class="constant">nil</span><span class="punct">,</span> <span class="punct">&quot;</span><span class="string">firstname</span><span class="punct">&quot;=&gt;</span><span class="constant">nil</span><span class="punct">,</span> <span class="punct">&quot;</span><span class="string">email</span><span class="punct">&quot;=&gt;</span><span class="constant">nil</span><span class="punct">}&gt;&gt;</span>
</pre></p>
<p><strong>Kapoow!</strong> Instant validation! (NOTE: not as instant as it used to be &#8211; remember &#8211; you need to call <code>generate_validations</code> on each class as required)</p>
<p>Because you specified the three columns as <code>:null =&gt; false</code>,
your ActiveRecord models will now automagically generated <code>validates_presence_of</code>
for each non-null field, plus several other validations (since version 0.8.0).</p>
<p>Ok, we&#8217;re just warming up.</p>
<p>Your models normally require association commands (<code>has_many</code>, <code>belongs_to</code>, etc, as
demonstrated above) to have the brilliantly simple support that Rails/ActiveRecords are known for.</p>
<p>Let&#8217;s just watch what Dr Nic&#8217;s Magic Models can do without any effort at all&#8230;</p>
<p><pre class="syntax">
<span class="ident">person</span> <span class="punct">=</span> <span class="constant">Person</span><span class="punct">.</span><span class="ident">create</span><span class="punct">(</span><span class="symbol">:firstname</span> <span class="punct">=&gt;</span> <span class="punct">&quot;</span><span class="string">Nic</span><span class="punct">&quot;,</span> <span class="symbol">:lastname</span> <span class="punct">=&gt;</span> <span class="punct">&quot;</span><span class="string">Williams</span><span class="punct">&quot;,</span> <span class="symbol">:email</span> <span class="punct">=&gt;</span> <span class="punct">&quot;</span><span class="string">drnicwilliams@gmail.com</span><span class="punct">&quot;)</span>
<span class="ident">group</span> <span class="punct">=</span> <span class="constant">Group</span><span class="punct">.</span><span class="ident">create</span><span class="punct">(</span><span class="symbol">:name</span> <span class="punct">=&gt;</span> <span class="punct">&quot;</span><span class="string">Magic Models Forum</span><span class="punct">&quot;,</span> <span class="symbol">:description</span> <span class="punct">=&gt;</span> <span class="punct">&quot;</span><span class="string">http://groups.google.com/magicmodels</span><span class="punct">&quot;)</span>
<span class="ident">membership</span> <span class="punct">=</span> <span class="constant">Membership</span><span class="punct">.</span><span class="ident">create</span><span class="punct">(</span><span class="symbol">:person</span> <span class="punct">=&gt;</span> <span class="ident">person</span><span class="punct">,</span> <span class="symbol">:group</span> <span class="punct">=&gt;</span> <span class="ident">group</span><span class="punct">)</span>
<span class="ident">person</span><span class="punct">.</span><span class="ident">memberships</span><span class="punct">.</span><span class="ident">length</span>
<span class="punct">=&gt;</span> <span class="number">1</span>
<span class="ident">membership</span><span class="punct">.</span><span class="ident">person</span>
<span class="punct">=&gt;</span> <span class="punct">&lt;</span><span class="constant">Person</span><span class="punct">:</span><span class="number">0x38898e8</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">lastname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Williams</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">firstname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Nic</span><span class="punct">&quot;,</span>
<span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">email</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">drnicwilliams@gmail.com</span><span class="punct">&quot;}&gt;</span>
<span class="ident">group</span><span class="punct">.</span><span class="ident">memberships</span>
<span class="punct">=&gt;</span> <span class="punct">[&lt;</span><span class="constant">Membership</span><span class="punct">:</span><span class="number">0x3c8cd70</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">group_id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">person_id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;}&gt;]</span>
</pre></p>
<p>That final association trick is a ripper. Automatic generation of <code>has_many :through</code> associations&#8230;</p>
<p><pre class="syntax">
<span class="punct">&gt;&gt;</span> <span class="ident">person</span><span class="punct">.</span><span class="ident">groups</span>
<span class="punct">=&gt;</span> <span class="punct">[&lt;</span><span class="constant">Group</span><span class="punct">:</span><span class="number">0x39047e0</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">name</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Magic Models Forum</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">description</span><span class="punct">&quot;=&gt;</span><span class="constant">nil</span><span class="punct">}&gt;]</span>
<span class="punct">&gt;&gt;</span> <span class="ident">group</span><span class="punct">.</span><span class="ident">people</span>
<span class="punct">=&gt;</span> <span class="punct">[&lt;</span><span class="constant">Person</span><span class="punct">:</span><span class="number">0x3c33580</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">lastname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Williams</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">firstname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Nic</span><span class="punct">&quot;,</span>
<span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">email</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">drnicwilliams@gmail.com</span><span class="punct">&quot;}&gt;]</span>
</pre></p>
<h3>Drum roll&#8230;</h3>
<p>Ladies and gentlemen. For my final feat of magical mastery, I&#8217;ll ask you to do
something you&#8217;ve never done before. This illusion is akin to the <a href="http://www.toytent.com/Posters/985.html">floating lady</a>
illusion that has been passed down through generations of magicians.</p>
<p>Exit your console session.</p>
<span class="caps">DELETE</span> your three model classes: <code>person.rb, group.rb, and membership.rb</code> from the
<code>app/models</code> folder. (You can always get them back via the model generator&#8230; be fearless!)
<pre>rm app/models/*.rb</pre>
<p>Re-launch your console.</p>
<p><strong>drums are still rolling&#8230;</strong></p>
<p>Be prepared to applaud loudly&#8230;</p>
<p><pre class="syntax">
<span class="punct">&gt;&gt;</span> <span class="constant">Person</span>
<span class="punct">=&gt;</span> <span class="constant">Person</span>
</pre></p>
<p>You applaud loudly, but watch for more&#8230;</p>
<p><pre class="syntax">
<span class="punct">&gt;&gt;</span> <span class="constant">Person</span><span class="punct">.</span><span class="ident">new</span><span class="punct">.</span><span class="ident">valid?</span>
<span class="punct">=&gt;</span> <span class="constant">false</span>
<span class="punct">&gt;&gt;</span> <span class="ident">person</span> <span class="punct">=</span> <span class="constant">Person</span><span class="punct">.</span><span class="ident">find</span><span class="punct">(</span><span class="number">1</span><span class="punct">)</span>
<span class="punct">=&gt;</span> <span class="punct">&lt;</span><span class="constant">Person</span><span class="punct">:</span><span class="number">0x3958930</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">lastname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Williams</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">firstname</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Nic</span><span class="punct">&quot;,</span>
<span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">email</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">drnicwilliams@gmail.com</span><span class="punct">&quot;}&gt;</span>
<span class="punct">&gt;&gt;</span> <span class="ident">person</span><span class="punct">.</span><span class="ident">valid?</span>
<span class="punct">=&gt;</span> <span class="constant">true</span>
<span class="punct">&gt;&gt;</span> <span class="ident">person</span><span class="punct">.</span><span class="ident">memberships</span>
<span class="punct">=&gt;</span> <span class="punct">[&lt;</span><span class="constant">Membership</span><span class="punct">:</span><span class="number">0x393a000</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">group_id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">person_id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;}&gt;]</span>
<span class="punct">&gt;&gt;</span> <span class="ident">person</span><span class="punct">.</span><span class="ident">groups</span>
<span class="punct">=&gt;</span> <span class="punct">[&lt;</span><span class="constant">Group</span><span class="punct">:</span><span class="number">0x390df60</span> <span class="attribute">@attributes</span><span class="punct">={&quot;</span><span class="string">name</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">Magic Models Forum</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">id</span><span class="punct">&quot;=&gt;&quot;</span><span class="string">1</span><span class="punct">&quot;,</span> <span class="punct">&quot;</span><span class="string">description</span><span class="punct">&quot;=&gt;</span><span class="constant">nil</span><span class="punct">}&gt;]</span>
</pre></p>
<h3>Tada!</h3>
<p>The end.</p>
<h3>Use modules to scope your magic</h3>
<p>Only want to pick up tables starting with <code>blog_</code>?</p>
<p><pre class="syntax"><span class="keyword">module </span><span class="module">Blog</span>
<span class="ident">magic_module</span> <span class="symbol">:table_name_prefix</span> <span class="punct">=&gt;</span> <span class="punct">'</span><span class="string">blog_</span><span class="punct">'</span>
<span class="keyword">end</span>
<span class="constant">Blog</span><span class="punct">::</span><span class="constant">Post</span><span class="punct">.</span><span class="ident">table_name</span> <span class="comment"># =&gt; 'blog_posts'</span>
</pre></p>
<h2>Dr Nic&#8217;s Blog</h2>
<p><a href="http://www.drnicwilliams.com">http://www.drnicwilliams.com</a> &#8211; for future announcements and
other stories and things.</p>
<h2>Articles about Magic Models</h2>
<ul>
<li><a href="http://drnicwilliams.com/2006/08/07/ann-dr-nics-magic-models/">Announcement</a></li>
<li><a href="http://drnicwilliams.com/2006/08/10/bts-magic-models-class-creation/"><span class="caps">BTS</span> &#8211; Class creation</a></li>
</ul>
<h2>Forum</h2>
<p><a href="http://groups.google.com/group/magicmodels">http://groups.google.com/group/magicmodels</a></p>
<h2>Licence</h2>
<p>This code is free to use under the terms of the <span class="caps">MIT</span> licence.</p>
<h2>Contact</h2>
<p>Comments are welcome. Send an email to <a href="mailto:drnicwilliams@gmail.com">Dr Nic Williams</a>
or via his blog at <a href="http://www.drnicwilliams.com">http://www.drnicwilliams.com</a></p>
<p class="coda">
<a href="mailto:drnicwilliams@gmail.com">Dr Nic</a>, 30th April 2007<br>
Theme extended from <a href="http://rb2js.rubyforge.org/">Paul Battley</a>
</p>
</div>
<script src="http://www.google-analytics.com/urchin.js" type="text/javascript">
</script>
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_uacct = "UA-567811-3";
urchinTracker();
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h1. Dr Nic's Magic Models
If you've used Ruby on Rails you'll have written at least one model class like this:
<pre syntax='ruby'>
class Person < ActiveRecord::Base
has_many :memberships
has_many :groups, :through => :memberships
belongs_to :family
validates_presence_of :firstname, :lastname, :email
end
</pre>
A few minutes later you'll have wondered to yourself,
<blockquote>
Why do I have write my own <code>has_many</code>, <code>belongs_to</code>, and <code>validates_presence_of</code>
commands if all the data is in the database schema?
</blockquote>
Now, for the very first time, your classes can look like this:
<pre syntax='ruby'>
class Person < ActiveRecord::Base
end
</pre>
or, if you are lazy...
<pre syntax='ruby'>
class Person < ActiveRecord::Base; end
</pre>
or, if you read right to the end of this page, this...
<pre syntax='ruby'>
# Go fish.
</pre>
Magic and mystery abound. All for you. Impress your friends, amaze your mother.
NOTE: The gratuitous use of *Dr Nic's* in the name should only enhance the mystical magikery,
for magic needs a magician; and I love magic. I always wanted to create my own magic trick.
So I shall be the magician for the sake of magic itself. I look a bit like Harry Potter too,
if Harry were 32 and better dressed.
h2. Installation
To install the Dr Nic's Magic Models gem you can run the following command to
fetch the gem remotely from RubyForge:
<pre>
gem install dr_nic_magic_models
</pre>
or "download the gem manually":http://rubyforge.org/projects/magicmodels and
run the above command in the download directory.
Now you need to <code>require</code> the gem into your Ruby/Rails app. Insert the following
line into your script (use <code>config/environment.rb</code> for your Rails apps):
<pre>
require 'dr_nic_magic_models'
</pre>
Your application is now blessed with magical mystery.
h2. David Copperfield eat your Ruby-crusted heart out
Let's demonstrate the magical mystery in all its full-stage glory. Create a Ruby on Rails app (example uses sqlite3, but use your favourite databas):
<pre syntax="ruby">
rails magic_show -d sqlite3
cd magic_show
ruby script/generate model Person
ruby script/generate model Group
ruby script/generate model Membership
</pre>
Update the migration <code>001_create_people.rb</code> with:
<pre syntax="ruby">
class CreatePeople < ActiveRecord::Migration
def self.up
create_table :people do |t|
t.column :firstname, :string, :null => false
t.column :lastname, :string, :null => false
t.column :email, :string, :null => false
end
end
def self.down
drop_table :people
end
end
</pre>
Similarly, update the <code>def self.up</code> method of <code>002_create_groups.rb</code>
with:
<pre syntax="ruby">
create_table :groups do |t|
t.column :name, :string, :null => false
t.column :description, :string
end
</pre>
and <code>003_create_memberships.rb</code> with:
<pre syntax="ruby">
create_table :memberships do |t|
t.column :person_id, :integer, :null => false
t.column :group_id, :integer, :null => false
end
</pre>
And run your migrations to create the three tables:
<pre>
rake db:migrate
</pre>
h3. And now for some "woofle dust":http://en.wikipedia.org/wiki/List_of_conjuring_terms ...
At the end of <code>config/environment.rb</code> add the following line:
<pre>
require 'dr_nic_magic_models'
</pre>
Now, let's do a magic trick. First, let's check our model classes (<code>app/models/person.rb</code> etc):
<pre syntax="ruby">
class Person < ActiveRecord::Base
end
class Group < ActiveRecord::Base
end
class Membership < ActiveRecord::Base
end
</pre>
Nothing suspicious here. We have no validations and no associations. Just some plain old model classes.
UPDATE: To turn on magic validations, you now need to invoke <code>generate_validations</code> on defined classes. So, update your model classes:
<pre syntax="ruby">
class Person < ActiveRecord::Base
generate_validations
end
class Group < ActiveRecord::Base
generate_validations
end
class Membership < ActiveRecord::Base
generate_validations
end
</pre>
For this trick, we'll need an ordinary console session. Any old one lying around the house will do.
<pre>
ruby script/console
</pre>
Now a normal model class is valid until you explicitly add <code>validates_xxx</code> commands.
With Dr Nic's Magic Models:
<pre syntax="ruby">
person = Person.new
=> #<Person:0x393e0f8 @attributes={"lastname"=>"", "firstname"=>"", "email"=>""}, @new_record=true>
person.valid?
=> false
person.errors
=> #<ActiveRecord::Errors:0x3537b38 @errors={
"firstname"=>["can't be blank", "is too long (maximum is 255 characters)"],
"lastname"=>["can't be blank", "is too long (maximum is 255 characters)"],
"email"=>["can't be blank", "is too long (maximum is 255 characters)"]},
@base=#<Person:0x3538bf0 @errors=#<ActiveRecord::Errors:0x3537b38 ...>, @new_record=true,
@attributes={"lastname"=>nil, "firstname"=>nil, "email"=>nil}>>
</pre>
*Kapoow!* Instant validation! (NOTE: not as instant as it used to be - remember - you need to call <code>generate_validations</code> on each class as required)
Because you specified the three columns as <code>:null => false</code>,
your ActiveRecord models will now automagically generated <code>validates_presence_of</code>
for each non-null field, plus several other validations (since version 0.8.0).
Ok, we're just warming up.
Your models normally require association commands (<code>has_many</code>, <code>belongs_to</code>, etc, as
demonstrated above) to have the brilliantly simple support that Rails/ActiveRecords are known for.
Let's just watch what Dr Nic's Magic Models can do without any effort at all...
<pre syntax="ruby">
person = Person.create(:firstname => "Nic", :lastname => "Williams", :email => "drnicwilliams@gmail.com")
group = Group.create(:name => "Magic Models Forum", :description => "http://groups.google.com/magicmodels")
membership = Membership.create(:person => person, :group => group)
person.memberships.length
=> 1
membership.person
=> <Person:0x38898e8 @attributes={"lastname"=>"Williams", "firstname"=>"Nic",
"id"=>"1", "email"=>"drnicwilliams@gmail.com"}>
group.memberships
=> [<Membership:0x3c8cd70 @attributes={"group_id"=>"1", "id"=>"1", "person_id"=>"1"}>]
</pre>
That final association trick is a ripper. Automatic generation of <code>has_many :through</code> associations...
<pre syntax="ruby">
>> person.groups
=> [<Group:0x39047e0 @attributes={"name"=>"Magic Models Forum", "id"=>"1", "description"=>nil}>]
>> group.people
=> [<Person:0x3c33580 @attributes={"lastname"=>"Williams", "firstname"=>"Nic",
"id"=>"1", "email"=>"drnicwilliams@gmail.com"}>]
</pre>
h3. Drum roll...
Ladies and gentlemen. For my final feat of magical mastery, I'll ask you to do
something you've never done before. This illusion is akin to the "floating lady":http://www.toytent.com/Posters/985.html
illusion that has been passed down through generations of magicians.
Exit your console session.
DELETE your three model classes: <code>person.rb, group.rb, and membership.rb</code> from the
<code>app/models</code> folder. (You can always get them back via the model generator... be fearless!)
<pre>rm app/models/*.rb</pre>
Re-launch your console.
*drums are still rolling...*
Be prepared to applaud loudly...
<pre syntax="ruby">
>> Person
=> Person
</pre>
You applaud loudly, but watch for more...
<pre syntax="ruby">
>> Person.new.valid?
=> false
>> person = Person.find(1)
=> <Person:0x3958930 @attributes={"lastname"=>"Williams", "firstname"=>"Nic",
"id"=>"1", "email"=>"drnicwilliams@gmail.com"}>
>> person.valid?
=> true
>> person.memberships
=> [<Membership:0x393a000 @attributes={"group_id"=>"1", "id"=>"1", "person_id"=>"1"}>]
>> person.groups
=> [<Group:0x390df60 @attributes={"name"=>"Magic Models Forum", "id"=>"1", "description"=>nil}>]
</pre>
h3. Tada!
The end.
h3. Use modules to scope your magic
Only want to pick up tables starting with <code>blog_</code>?
<pre syntax="ruby">module Blog
magic_module :table_name_prefix => 'blog_'
end
Blog::Post.table_name # => 'blog_posts'
</pre>
h2. Dr Nic's Blog
"http://www.drnicwilliams.com":http://www.drnicwilliams.com - for future announcements and
other stories and things.
h2. Articles about Magic Models
* "Announcement":http://drnicwilliams.com/2006/08/07/ann-dr-nics-magic-models/
* "BTS - Class creation":http://drnicwilliams.com/2006/08/10/bts-magic-models-class-creation/
h2. Forum
"http://groups.google.com/group/magicmodels":http://groups.google.com/group/magicmodels
h2. Licence
This code is free to use under the terms of the MIT licence.
h2. Contact
Comments are welcome. Send an email to "Dr Nic Williams":mailto:drnicwilliams@gmail.com
or via his blog at "http://www.drnicwilliams.com":http://www.drnicwilliams.com

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/****************************************************************
* *
* curvyCorners *
* ------------ *
* *
* This script generates rounded corners for your divs. *
* *
* Version 1.2.9 *
* Copyright (c) 2006 Cameron Cooke *
* By: Cameron Cooke and Tim Hutchison. *
* *
* *
* Website: http://www.curvycorners.net *
* Email: info@totalinfinity.com *
* Forum: http://www.curvycorners.net/forum/ *
* *
* *
* This library is free software; you can redistribute *
* it and/or modify it under the terms of the GNU *
* Lesser General Public License as published by the *
* Free Software Foundation; either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* This library is distributed in the hope that it will *
* be useful, but WITHOUT ANY WARRANTY; without even the *
* implied warranty of MERCHANTABILITY or FITNESS FOR A *
* PARTICULAR PURPOSE. See the GNU Lesser General Public *
* License for more details. *
* *
* You should have received a copy of the GNU Lesser *
* General Public License along with this library; *
* Inc., 59 Temple Place, Suite 330, Boston, *
* MA 02111-1307 USA *
* *
****************************************************************/
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if(cc != "br")
{ for(var t = 0, k = newCorner.childNodes.length; t < k; t++)
{ var pixelBar = newCorner.childNodes[t]; var pixelBarTop = parseInt(pixelBar.style.top.substring(0, pixelBar.style.top.indexOf("px"))); var pixelBarLeft = parseInt(pixelBar.style.left.substring(0, pixelBar.style.left.indexOf("px"))); var pixelBarHeight = parseInt(pixelBar.style.height.substring(0, pixelBar.style.height.indexOf("px"))); if(cc == "tl" || cc == "bl"){ pixelBar.style.left = this.settings[cc].radius -pixelBarLeft -1 + "px";}
if(cc == "tr" || cc == "tl"){ pixelBar.style.top = this.settings[cc].radius -pixelBarHeight -pixelBarTop + "px";}
switch(cc)
{ case "tr":
pixelBar.style.backgroundPosition = "-" + Math.abs((this.boxWidth - this.settings[cc].radius + this.borderWidth) + pixelBarLeft) + "px -" + Math.abs(this.settings[cc].radius -pixelBarHeight -pixelBarTop - this.borderWidth) + "px"; break; case "tl":
pixelBar.style.backgroundPosition = "-" + Math.abs((this.settings[cc].radius -pixelBarLeft -1) - this.borderWidth) + "px -" + Math.abs(this.settings[cc].radius -pixelBarHeight -pixelBarTop - this.borderWidth) + "px"; break; case "bl":
pixelBar.style.backgroundPosition = "-" + Math.abs((this.settings[cc].radius -pixelBarLeft -1) - this.borderWidth) + "px -" + Math.abs((this.boxHeight + this.settings[cc].radius + pixelBarTop) -this.borderWidth) + "px"; break;}
}
}
}
if(newCorner)
{ switch(cc)
{ case "tl":
if(newCorner.style.position == "absolute") newCorner.style.top = "0px"; if(newCorner.style.position == "absolute") newCorner.style.left = "0px"; if(this.topContainer) this.topContainer.appendChild(newCorner); break; case "tr":
if(newCorner.style.position == "absolute") newCorner.style.top = "0px"; if(newCorner.style.position == "absolute") newCorner.style.right = "0px"; if(this.topContainer) this.topContainer.appendChild(newCorner); break; case "bl":
if(newCorner.style.position == "absolute") newCorner.style.bottom = "0px"; if(newCorner.style.position == "absolute") newCorner.style.left = "0px"; if(this.bottomContainer) this.bottomContainer.appendChild(newCorner); break; case "br":
if(newCorner.style.position == "absolute") newCorner.style.bottom = "0px"; if(newCorner.style.position == "absolute") newCorner.style.right = "0px"; if(this.bottomContainer) this.bottomContainer.appendChild(newCorner); break;}
}
}
}
var radiusDiff = new Array(); radiusDiff["t"] = Math.abs(this.settings.tl.radius - this.settings.tr.radius)
radiusDiff["b"] = Math.abs(this.settings.bl.radius - this.settings.br.radius); for(z in radiusDiff)
{ if(z == "t" || z == "b")
{ if(radiusDiff[z])
{ var smallerCornerType = ((this.settings[z + "l"].radius < this.settings[z + "r"].radius)? z +"l" : z +"r"); var newFiller = document.createElement("DIV"); newFiller.style.height = radiusDiff[z] + "px"; newFiller.style.width = this.settings[smallerCornerType].radius+ "px"
newFiller.style.position = "absolute"; newFiller.style.fontSize = "1px"; newFiller.style.overflow = "hidden"; newFiller.style.backgroundColor = this.boxColour; switch(smallerCornerType)
{ case "tl":
newFiller.style.bottom = "0px"; newFiller.style.left = "0px"; newFiller.style.borderLeft = this.borderString; this.topContainer.appendChild(newFiller); break; case "tr":
newFiller.style.bottom = "0px"; newFiller.style.right = "0px"; newFiller.style.borderRight = this.borderString; this.topContainer.appendChild(newFiller); break; case "bl":
newFiller.style.top = "0px"; newFiller.style.left = "0px"; newFiller.style.borderLeft = this.borderString; this.bottomContainer.appendChild(newFiller); break; case "br":
newFiller.style.top = "0px"; newFiller.style.right = "0px"; newFiller.style.borderRight = this.borderString; this.bottomContainer.appendChild(newFiller); break;}
}
var newFillerBar = document.createElement("DIV"); newFillerBar.style.position = "relative"; newFillerBar.style.fontSize = "1px"; newFillerBar.style.overflow = "hidden"; newFillerBar.style.backgroundColor = this.boxColour; newFillerBar.style.backgroundImage = this.backgroundImage; switch(z)
{ case "t":
if(this.topContainer)
{ if(this.settings.tl.radius && this.settings.tr.radius)
{ newFillerBar.style.height = topMaxRadius - this.borderWidth + "px"; newFillerBar.style.marginLeft = this.settings.tl.radius - this.borderWidth + "px"; newFillerBar.style.marginRight = this.settings.tr.radius - this.borderWidth + "px"; newFillerBar.style.borderTop = this.borderString; if(this.backgroundImage != "")
newFillerBar.style.backgroundPosition = "-" + (topMaxRadius + this.borderWidth) + "px 0px"; this.topContainer.appendChild(newFillerBar);}
this.box.style.backgroundPosition = "0px -" + (topMaxRadius - this.borderWidth) + "px";}
break; case "b":
if(this.bottomContainer)
{ if(this.settings.bl.radius && this.settings.br.radius)
{ newFillerBar.style.height = botMaxRadius - this.borderWidth + "px"; newFillerBar.style.marginLeft = this.settings.bl.radius - this.borderWidth + "px"; newFillerBar.style.marginRight = this.settings.br.radius - this.borderWidth + "px"; newFillerBar.style.borderBottom = this.borderString; if(this.backgroundImage != "")
newFillerBar.style.backgroundPosition = "-" + (botMaxRadius + this.borderWidth) + "px -" + (this.boxHeight + (topMaxRadius + this.borderWidth)) + "px"; this.bottomContainer.appendChild(newFillerBar);}
}
break;}
}
}
if(this.settings.autoPad == true && this.boxPadding > 0)
{ var contentContainer = document.createElement("DIV"); contentContainer.style.position = "relative"; contentContainer.innerHTML = this.boxContent; contentContainer.className = "autoPadDiv"; var topPadding = Math.abs(topMaxRadius - this.boxPadding); var botPadding = Math.abs(botMaxRadius - this.boxPadding); if(topMaxRadius < this.boxPadding)
contentContainer.style.paddingTop = topPadding + "px"; if(botMaxRadius < this.boxPadding)
contentContainer.style.paddingBottom = botMaxRadius + "px"; contentContainer.style.paddingLeft = this.boxPadding + "px"; contentContainer.style.paddingRight = this.boxPadding + "px"; this.contentDIV = this.box.appendChild(contentContainer);}
}
this.drawPixel = function(intx, inty, colour, transAmount, height, newCorner, image, cornerRadius)
{ var pixel = document.createElement("DIV"); pixel.style.height = height + "px"; pixel.style.width = "1px"; pixel.style.position = "absolute"; pixel.style.fontSize = "1px"; pixel.style.overflow = "hidden"; var topMaxRadius = Math.max(this.settings["tr"].radius, this.settings["tl"].radius); if(image == -1 && this.backgroundImage != "")
{ pixel.style.backgroundImage = this.backgroundImage; pixel.style.backgroundPosition = "-" + (this.boxWidth - (cornerRadius - intx) + this.borderWidth) + "px -" + ((this.boxHeight + topMaxRadius + inty) -this.borderWidth) + "px";}
else
{ pixel.style.backgroundColor = colour;}
if (transAmount != 100)
setOpacity(pixel, transAmount); pixel.style.top = inty + "px"; pixel.style.left = intx + "px"; newCorner.appendChild(pixel);}
}
function insertAfter(parent, node, referenceNode)
{ parent.insertBefore(node, referenceNode.nextSibling);}
function BlendColour(Col1, Col2, Col1Fraction)
{ var red1 = parseInt(Col1.substr(1,2),16); var green1 = parseInt(Col1.substr(3,2),16); var blue1 = parseInt(Col1.substr(5,2),16); var red2 = parseInt(Col2.substr(1,2),16); var green2 = parseInt(Col2.substr(3,2),16); var blue2 = parseInt(Col2.substr(5,2),16); if(Col1Fraction > 1 || Col1Fraction < 0) Col1Fraction = 1; var endRed = Math.round((red1 * Col1Fraction) + (red2 * (1 - Col1Fraction))); if(endRed > 255) endRed = 255; if(endRed < 0) endRed = 0; var endGreen = Math.round((green1 * Col1Fraction) + (green2 * (1 - Col1Fraction))); if(endGreen > 255) endGreen = 255; if(endGreen < 0) endGreen = 0; var endBlue = Math.round((blue1 * Col1Fraction) + (blue2 * (1 - Col1Fraction))); if(endBlue > 255) endBlue = 255; if(endBlue < 0) endBlue = 0; return "#" + IntToHex(endRed)+ IntToHex(endGreen)+ IntToHex(endBlue);}
function IntToHex(strNum)
{ base = strNum / 16; rem = strNum % 16; base = base - (rem / 16); baseS = MakeHex(base); remS = MakeHex(rem); return baseS + '' + remS;}
function MakeHex(x)
{ if((x >= 0) && (x <= 9))
{ return x;}
else
{ switch(x)
{ case 10: return "A"; case 11: return "B"; case 12: return "C"; case 13: return "D"; case 14: return "E"; case 15: return "F";}
}
}
function pixelFraction(x, y, r)
{ var pixelfraction = 0; var xvalues = new Array(1); var yvalues = new Array(1); var point = 0; var whatsides = ""; var intersect = Math.sqrt((Math.pow(r,2) - Math.pow(x,2))); if ((intersect >= y) && (intersect < (y+1)))
{ whatsides = "Left"; xvalues[point] = 0; yvalues[point] = intersect - y; point = point + 1;}
var intersect = Math.sqrt((Math.pow(r,2) - Math.pow(y+1,2))); if ((intersect >= x) && (intersect < (x+1)))
{ whatsides = whatsides + "Top"; xvalues[point] = intersect - x; yvalues[point] = 1; point = point + 1;}
var intersect = Math.sqrt((Math.pow(r,2) - Math.pow(x+1,2))); if ((intersect >= y) && (intersect < (y+1)))
{ whatsides = whatsides + "Right"; xvalues[point] = 1; yvalues[point] = intersect - y; point = point + 1;}
var intersect = Math.sqrt((Math.pow(r,2) - Math.pow(y,2))); if ((intersect >= x) && (intersect < (x+1)))
{ whatsides = whatsides + "Bottom"; xvalues[point] = intersect - x; yvalues[point] = 0;}
switch (whatsides)
{ case "LeftRight":
pixelfraction = Math.min(yvalues[0],yvalues[1]) + ((Math.max(yvalues[0],yvalues[1]) - Math.min(yvalues[0],yvalues[1]))/2); break; case "TopRight":
pixelfraction = 1-(((1-xvalues[0])*(1-yvalues[1]))/2); break; case "TopBottom":
pixelfraction = Math.min(xvalues[0],xvalues[1]) + ((Math.max(xvalues[0],xvalues[1]) - Math.min(xvalues[0],xvalues[1]))/2); break; case "LeftBottom":
pixelfraction = (yvalues[0]*xvalues[1])/2; break; default:
pixelfraction = 1;}
return pixelfraction;}
function rgb2Hex(rgbColour)
{ try{ var rgbArray = rgb2Array(rgbColour); var red = parseInt(rgbArray[0]); var green = parseInt(rgbArray[1]); var blue = parseInt(rgbArray[2]); var hexColour = "#" + IntToHex(red) + IntToHex(green) + IntToHex(blue);}
catch(e){ alert("There was an error converting the RGB value to Hexadecimal in function rgb2Hex");}
return hexColour;}
function rgb2Array(rgbColour)
{ var rgbValues = rgbColour.substring(4, rgbColour.indexOf(")")); var rgbArray = rgbValues.split(", "); return rgbArray;}
function setOpacity(obj, opacity)
{ opacity = (opacity == 100)?99.999:opacity; if(isSafari && obj.tagName != "IFRAME")
{ var rgbArray = rgb2Array(obj.style.backgroundColor); var red = parseInt(rgbArray[0]); var green = parseInt(rgbArray[1]); var blue = parseInt(rgbArray[2]); obj.style.backgroundColor = "rgba(" + red + ", " + green + ", " + blue + ", " + opacity/100 + ")";}
else if(typeof(obj.style.opacity) != "undefined")
{ obj.style.opacity = opacity/100;}
else if(typeof(obj.style.MozOpacity) != "undefined")
{ obj.style.MozOpacity = opacity/100;}
else if(typeof(obj.style.filter) != "undefined")
{ obj.style.filter = "alpha(opacity:" + opacity + ")";}
else if(typeof(obj.style.KHTMLOpacity) != "undefined")
{ obj.style.KHTMLOpacity = opacity/100;}
}
function inArray(array, value)
{ for(var i = 0; i < array.length; i++){ if (array[i] === value) return i;}
return false;}
function inArrayKey(array, value)
{ for(key in array){ if(key === value) return true;}
return false;}
function addEvent(elm, evType, fn, useCapture) { if (elm.addEventListener) { elm.addEventListener(evType, fn, useCapture); return true;}
else if (elm.attachEvent) { var r = elm.attachEvent('on' + evType, fn); return r;}
else { elm['on' + evType] = fn;}
}
function removeEvent(obj, evType, fn, useCapture){ if (obj.removeEventListener){ obj.removeEventListener(evType, fn, useCapture); return true;} else if (obj.detachEvent){ var r = obj.detachEvent("on"+evType, fn); return r;} else { alert("Handler could not be removed");}
}
function format_colour(colour)
{ var returnColour = "#ffffff"; if(colour != "" && colour != "transparent")
{ if(colour.substr(0, 3) == "rgb")
{ returnColour = rgb2Hex(colour);}
else if(colour.length == 4)
{ returnColour = "#" + colour.substring(1, 2) + colour.substring(1, 2) + colour.substring(2, 3) + colour.substring(2, 3) + colour.substring(3, 4) + colour.substring(3, 4);}
else
{ returnColour = colour;}
}
return returnColour;}
function get_style(obj, property, propertyNS)
{ try
{ if(obj.currentStyle)
{ var returnVal = eval("obj.currentStyle." + property);}
else
{ if(isSafari && obj.style.display == "none")
{ obj.style.display = ""; var wasHidden = true;}
var returnVal = document.defaultView.getComputedStyle(obj, '').getPropertyValue(propertyNS); if(isSafari && wasHidden)
{ obj.style.display = "none";}
}
}
catch(e)
{ }
return returnVal;}
function getElementsByClass(searchClass, node, tag)
{ var classElements = new Array(); if(node == null)
node = document; if(tag == null)
tag = '*'; var els = node.getElementsByTagName(tag); var elsLen = els.length; var pattern = new RegExp("(^|\s)"+searchClass+"(\s|$)"); for (i = 0, j = 0; i < elsLen; i++)
{ if(pattern.test(els[i].className))
{ classElements[j] = els[i]; j++;}
}
return classElements;}
function newCurvyError(errorMessage)
{ return new Error("curvyCorners Error:\n" + errorMessage)
}

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vendor/gems/dr_nic_magic_models-0.9.2/website/stylesheets/screen.css vendored Normal file
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body {
background-color: #115;
font-family: "Georgia", sans-serif;
font-size: 16px;
line-height: 1.6em;
padding: 1.6em 0 0 0;
color: #eee;
}
h1, h2, h3, h4, h5, h6 {
color: #77f;
}
h1 {
font-family: sans-serif;
font-weight: normal;
font-size: 4em;
line-height: 0.8em;
letter-spacing: -0.1ex;
}
li {
padding: 0;
margin: 0;
list-style-type: square;
}
a {
color: #99f;
font-weight: normal;
text-decoration: underline;
}
blockquote {
font-size: 90%;
font-style: italic;
border-left: 1px solid #eee;
padding-left: 1em;
}
.caps {
font-size: 80%;
}
#main {
width: 55em;
padding: 0;
margin: 0 auto;
}
.coda {
text-align: right;
color: #77f;
font-size: smaller;
}
pre, code {
font-family: monospace;
font-size: 90%;
line-height: 1.4em;
color: #ff8;
background-color: #111;
padding: 2px 10px 2px 10px;
}
.comment { color: #aaa; font-style: italic; }
.keyword { color: #eff; font-weight: bold; }
.punct { color: #eee; font-weight: bold; }
.symbol { color: #0bb; }
.string { color: #6b4; }
.ident { color: #ff8; }
.constant { color: #66f; }
.regex { color: #ec6; }
.number { color: #F99; }
.expr { color: #227; }
#version {
float: right;
text-align: right;
font-family: sans-serif;
font-weight: normal;
background-color: #ff8;
color: #66f;
padding: 15px 20px 10px 20px;
margin: 0 auto;
border: 3px solid #66f;
}
#version .numbers {
display: block;
font-size: 4em;
line-height: 0.8em;
letter-spacing: -0.1ex;
}
#version a {
text-decoration: none;
}
.clickable {
cursor: pointer;
cursor: hand;
}

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vendor/gems/dr_nic_magic_models-0.9.2/website/template.js vendored Normal file
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// <%= title %>
var version = <%= version.to_json %>;
<%= body %>

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vendor/gems/dr_nic_magic_models-0.9.2/website/template.rhtml vendored Normal file
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<link rel="stylesheet" href="stylesheets/screen.css" type="text/css" media="screen" />
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>
<%= title %>
</title>
<script src="javascripts/rounded_corners_lite.inc.js" type="text/javascript"></script>
<style>
</style>
<script type="text/javascript" src="version-raw.js"></script>
<script type="text/javascript">
window.onload = function() {
settings = {
tl: { radius: 10 },
tr: { radius: 10 },
bl: { radius: 10 },
br: { radius: 10 },
antiAlias: true,
autoPad: true,
validTags: ["div"]
}
var versionBox = new curvyCorners(settings, document.getElementById("version"));
versionBox.applyCornersToAll();
document.getElementById("version_num").innerHTML = version;
}
</script>
</head>
<body>
<div id="main">
<p><a href="/">&#x21A9; More Magic</a></p>
<div id="version" class="clickable" onclick='document.location = "<%= download %>"; return false'>
Get Version
<a id="version_num" href="<%= download %>" class="numbers"></a>
</div>
<h1><%= title %></h1>
<%= body %>
<p class="coda">
<a href="mailto:drnicwilliams@gmail.com">Dr Nic</a>, <%= modified.pretty %><br>
Theme extended from <a href="http://rb2js.rubyforge.org/">Paul Battley</a>
</p>
</div>
<script src="http://www.google-analytics.com/urchin.js" type="text/javascript">
</script>
<script type="text/javascript">
_uacct = "UA-567811-3";
urchinTracker();
</script>
</body>
</html>

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vendor/gems/dr_nic_magic_models-0.9.2/website/version-raw.js vendored Normal file
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// Version JS file
var version = "0.9.2";
MagicAnnouncement.show('magicmodels', version);

2
vendor/gems/dr_nic_magic_models-0.9.2/website/version-raw.txt vendored Normal file
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h1. Version JS file
MagicAnnouncement.show('magicmodels', version);

4
vendor/gems/dr_nic_magic_models-0.9.2/website/version.js vendored Normal file
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// Version JS file
var version = "0.9.2";
document.write(" - " + version);

3
vendor/gems/dr_nic_magic_models-0.9.2/website/version.txt vendored Normal file
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h1. Version JS file
document.write(" - " + version);