1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
<!DOCTYPE html>
<html>
<head>
<title>Bundler: The best way to manage a Ruby application's gems</title>
<meta content='text/html; charset=UTF-8' http-equiv='Content-Type'>
<meta content='276VSYOko8B8vIu1i8i5qbj7_ql5PXo0dU69XQy-SL' name='globalsign-domain-verification'>
<link href='/images/favicon.png' rel='shortcut icon' type='image/png'>
<link href="/stylesheets/application.css" media="screen" rel="stylesheet" type="text/css" />
</head>
<body>
<div id='body'>
<div id='header'>
<a class="image" href="/"><img width="725" alt="The best way to manage your application's dependencies" src="/images/gembundler.png" /></a>
</div>
<div id='container'>
<div id='contents'>
<h2>Specifying a Ruby Version</h2>
<div class='contents'>
<div class='bullet'>
<div class='description'>
Like gems, developers can setup a dependency on Ruby. This makes your app fail faster in case you depend on specific features in a Ruby VM. This way, the Ruby VM on your deployment server will match your local one. You can do this by using the <code>ruby</code> directive in the <code>Gemfile</code>:
</div>
<pre class="highlight ruby"><span class="n">ruby</span> <span class="s1">'RUBY_VERSION'</span><span class="p">,</span> <span class="ss">:engine</span> <span class="o">=></span> <span class="s1">'ENGINE'</span><span class="p">,</span> <span class="ss">:engine_version</span> <span class="o">=></span> <span class="s1">'ENGINE_VERSION'</span>
</pre>
</div>
<div class='bullet'>
<div class='description'>
If you wanted to use JRuby 1.6.7 using Ruby 1.9.3, you would simply do the following:
</div>
<pre class="highlight ruby"><span class="n">ruby</span> <span class="s1">'1.9.3'</span><span class="p">,</span> <span class="ss">:engine</span> <span class="o">=></span> <span class="s1">'jruby'</span><span class="p">,</span> <span class="ss">:engine_version</span> <span class="o">=></span> <span class="s1">'1.6.7'</span>
</pre>
</div>
<div class='bullet'>
<div class='description'>
Bundler will make checks against the current running Ruby VM to make sure it matches what is specified in the <code>Gemfile</code>. If things don't match, Bundler will raise an Exception explaining what doesn't match.
</div>
<pre class="highlight plaintext">Your Ruby version is 1.8.7, but your Gemfile specified 1.9.3
</pre>
</div>
<div class='bullet'>
<div class='description'>
Both <code>:engine</code> and <code>:engine_version</code> are optional. When these options are omitted, this means the app is compatible with a particular Ruby ABI but the engine is irrelevant. When <code>:engine</code> is used, <code>:engine_version</code> must also be specified.
</div>
</div>
<div class='bullet'>
<div class='description'>
Using the <code>platform</code> command with the <code>--ruby</code> flag, you can see what <code>ruby</code> directive is specified in the <code>Gemfile</code>.
</div>
<pre class="highlight plaintext">ruby 1.9.3 (jruby 1.6.7)</pre>
<a href="/v1.3/bundle_platform.html">Learn More: bundle platform</a>
</div>
<div class='bullet'>
<div class='description'>
The <code>ruby</code> directive explicitly leaves out the ability to specify a patch level. Ruby patches often include important bug and security fixes and are extremely compatible.
</div>
</div>
</div>
</div>
</div>
</div>
<div id='footer'>
<img src="/images/emocow.png" />
<img src="/images/panda.jpg" />
<div class='spacer'></div>
<div id='credits'>
<p>
Many thanks to Bundler's <a href="/contributors.html">contributors</a>
and <a href="/sponsors.html">sponsors</a>
</p>
</div>
<div class='spacer'></div>
<img src="/images/bundler-small.png" />
</div>
<a href='http://github.com/bundler/bundler/' id='github'>
<img alt='Fork me on GitHub' src='http://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png'>
</a>
<div id='prod-versions'>
Docs:
<a href="/v0.9/">v0.9</a>
<a href="/v1.0/">v1.0</a>
<a href="/v1.1/">v1.1</a>
<a href="/v1.2/">v1.2</a>
<a class="current" href="/v1.3/">v1.3</a>
<a href="/v1.5/index.html">v1.5</a>
<a href="/">v1.6</a>
</div>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-39559982-1', 'bundler.io');
ga('send', 'pageview');
</script>
</body>
</html>
|
