<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>calculate (ActiveRecord::Calculations::ClassMethods)</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<link rel="stylesheet" href="../../../.././rdoc-style.css" type="text/css" media="screen" />
</head>
<body class="standalone-code">
<pre><span class="ruby-comment cmt"># File lib/active_record/calculations.rb, line 125</span>
<span class="ruby-keyword kw">def</span> <span class="ruby-identifier">calculate</span>(<span class="ruby-identifier">operation</span>, <span class="ruby-identifier">column_name</span>, <span class="ruby-identifier">options</span> = {})
<span class="ruby-identifier">validate_calculation_options</span>(<span class="ruby-identifier">operation</span>, <span class="ruby-identifier">options</span>)
<span class="ruby-identifier">column_name</span> = <span class="ruby-identifier">options</span>[<span class="ruby-identifier">:select</span>] <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">options</span>[<span class="ruby-identifier">:select</span>]
<span class="ruby-identifier">column_name</span> = <span class="ruby-value str">'*'</span> <span class="ruby-keyword kw">if</span> <span class="ruby-identifier">column_name</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">:all</span>
<span class="ruby-identifier">column</span> = <span class="ruby-identifier">column_for</span> <span class="ruby-identifier">column_name</span>
<span class="ruby-identifier">catch</span> <span class="ruby-identifier">:invalid_query</span> <span class="ruby-keyword kw">do</span>
<span class="ruby-keyword kw">if</span> <span class="ruby-identifier">options</span>[<span class="ruby-identifier">:group</span>]
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">execute_grouped_calculation</span>(<span class="ruby-identifier">operation</span>, <span class="ruby-identifier">column_name</span>, <span class="ruby-identifier">column</span>, <span class="ruby-identifier">options</span>)
<span class="ruby-keyword kw">else</span>
<span class="ruby-keyword kw">return</span> <span class="ruby-identifier">execute_simple_calculation</span>(<span class="ruby-identifier">operation</span>, <span class="ruby-identifier">column_name</span>, <span class="ruby-identifier">column</span>, <span class="ruby-identifier">options</span>)
<span class="ruby-keyword kw">end</span>
<span class="ruby-keyword kw">end</span>
<span class="ruby-value">0</span>
<span class="ruby-keyword kw">end</span></pre>
</body>
</html>
distrib
>
Mandriva
>
2010.0
>
i586
>
media
>
contrib-release
>
by-pkgid
>
d51872cc0e1fdee944d71993f94ac764
>
files
>
246
