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<title>Class: Rack::Static</title>
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<div id="classHeader">
<table class="header-table">
<tr class="top-aligned-row">
<td><strong>Class</strong></td>
<td class="class-name-in-header">Rack::Static</td>
</tr>
<tr class="top-aligned-row">
<td><strong>In:</strong></td>
<td>
<a href="../../files/lib/rack/static_rb.html">
lib/rack/static.rb
</a>
<br />
</td>
</tr>
<tr class="top-aligned-row">
<td><strong>Parent:</strong></td>
<td>
Object
</td>
</tr>
</table>
</div>
<!-- banner header -->
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<div id="contextContent">
<div id="description">
<p>
The <a href="Static.html">Rack::Static</a> middleware intercepts requests
for static files (javascript files, images, stylesheets, etc) based on the
url prefixes or route mappings passed in the options, and serves them using
a <a href="File.html">Rack::File</a> object. This allows a <a
href="../Rack.html">Rack</a> stack to serve both static and dynamic
content.
</p>
<p>
Examples:
</p>
<p>
Serve all requests beginning with /media from the "media" folder
located in the current directory (ie media/*):
</p>
<pre>
use Rack::Static, :urls => ["/media"]
</pre>
<p>
Serve all requests beginning with /css or /images from the folder
"public" in the current directory (ie public/css/* and
public/images/*):
</p>
<pre>
use Rack::Static, :urls => ["/css", "/images"], :root => "public"
</pre>
<p>
Serve all requests to / with "index.html" from the folder
"public" in the current directory (ie public/index.html):
</p>
<pre>
use Rack::Static, :urls => {"/" => 'index.html'}, :root => 'public'
</pre>
<p>
Serve all requests normally from the folder "public" in the
current directory but uses index.html as default route for "/"
</p>
<pre>
use Rack::Static, :urls => [""], :root => 'public', :index =>
'index.html'
</pre>
<p>
Set custom HTTP Headers for based on rules:
</p>
<pre>
use Rack::Static, :root => 'public',
:header_rules => [
[rule, {header_field => content, header_field => content}],
[rule, {header_field => content}]
]
Rules for selecting files:
1) All files
Provide the :all symbol
:all => Matches every file
2) Folders
Provide the folder path as a string
'/folder' or '/folder/subfolder' => Matches files in a certain folder
3) File Extensions
Provide the file extensions as an array
['css', 'js'] or %w(css js) => Matches files ending in .css or .js
4) Regular Expressions / Regexp
Provide a regular expression
%r{\.(?:css|js)\z} => Matches files ending in .css or .js
/\.(?:eot|ttf|otf|woff|svg)\z/ => Matches files ending in
the most common web font formats (.eot, .ttf, .otf, .woff, .svg)
Note: This Regexp is available as a shortcut, using the :fonts rule
5) Font Shortcut
Provide the :fonts symbol
:fonts => Uses the Regexp rule stated right above to match all common web font endings
Rule Ordering:
Rules are applied in the order that they are provided.
List rather general rules above special ones.
Complete example use case including HTTP header rules:
use Rack::Static, :root => 'public',
:header_rules => [
# Cache all static files in public caches (e.g. Rack::Cache)
# as well as in the browser
[:all, {'Cache-Control' => 'public, max-age=31536000'}],
# Provide web fonts with cross-origin access-control-headers
# Firefox requires this when serving assets using a Content Delivery Network
[:fonts, {'Access-Control-Allow-Origin' => '*'}]
]
</pre>
</div>
</div>
<div id="method-list">
<h3 class="section-bar">Methods</h3>
<div class="name-list">
<a href="#M000406">applicable_rules</a>
<a href="#M000405">call</a>
<a href="#M000404">can_serve</a>
<a href="#M000401">new</a>
<a href="#M000402">overwrite_file_path</a>
<a href="#M000403">route_file</a>
</div>
</div>
</div>
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<div id="methods">
<h3 class="section-bar">Public Class methods</h3>
<div id="method-M000401" class="method-detail">
<a name="M000401"></a>
<div class="method-heading">
<a href="Static.src/M000401.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000401.html');return false;">
<span class="method-name">new</span><span class="method-args">(app, options={})</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<h3 class="section-bar">Public Instance methods</h3>
<div id="method-M000406" class="method-detail">
<a name="M000406"></a>
<div class="method-heading">
<a href="Static.src/M000406.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000406.html');return false;">
<span class="method-name">applicable_rules</span><span class="method-args">(path)</span>
</a>
</div>
<div class="method-description">
<p>
Convert HTTP header rules to HTTP headers
</p>
</div>
</div>
<div id="method-M000405" class="method-detail">
<a name="M000405"></a>
<div class="method-heading">
<a href="Static.src/M000405.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000405.html');return false;">
<span class="method-name">call</span><span class="method-args">(env)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000404" class="method-detail">
<a name="M000404"></a>
<div class="method-heading">
<a href="Static.src/M000404.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000404.html');return false;">
<span class="method-name">can_serve</span><span class="method-args">(path)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000402" class="method-detail">
<a name="M000402"></a>
<div class="method-heading">
<a href="Static.src/M000402.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000402.html');return false;">
<span class="method-name">overwrite_file_path</span><span class="method-args">(path)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
<div id="method-M000403" class="method-detail">
<a name="M000403"></a>
<div class="method-heading">
<a href="Static.src/M000403.html" target="Code" class="method-signature"
onclick="popupCode('Static.src/M000403.html');return false;">
<span class="method-name">route_file</span><span class="method-args">(path)</span>
</a>
</div>
<div class="method-description">
</div>
</div>
</div>
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