235 lines
8.7 KiB
Markdown
235 lines
8.7 KiB
Markdown
---
|
||
title: Configuration Reference
|
||
layout: tutorial
|
||
classnames:
|
||
- tutorial
|
||
---
|
||
# Configuration Reference
|
||
|
||
The compass configuration file is a ruby file, which means that we can do some
|
||
clever things if we want to. But don’t let it frighten you; it’s really quite
|
||
easy to set up your project.
|
||
|
||
## Basic format
|
||
|
||
Most configuration properties are a simple assignment to a configuration property.
|
||
For example:
|
||
|
||
css_dir = "stylesheets"
|
||
|
||
Most configuration properties have a value that is a “basic” type. There are three
|
||
basic types that can be set to a property:
|
||
|
||
* **String** – Text is surrounded by either single or double quotes.
|
||
E.g. `"this is a string"`
|
||
* **Symbol** – A symbol starts with a colon and has no spaces in it.
|
||
Symbols are used to represent values where the set of possible values are limited.
|
||
E.g. `:foo` or `:foo_bar_baz`
|
||
* **Boolean** – `true` or `false`
|
||
|
||
There are two kinds of composite values:
|
||
|
||
* **Array** – An Array is a comma delimited list of basic values surrounded by
|
||
square brackets. E.g. `["one", "two", "three"]`.
|
||
* **Hash** – A Hash is an association or mapping of one value to another.
|
||
It is a comma delimited list of associations surrounded by curly brackets.
|
||
An association is two values separated by `=>`. E.g. `{:foo => "aaa", :bar => "zzz"}`
|
||
|
||
## Comments
|
||
|
||
Use the hash sign `#` to comment out everything from the hash sign to the end
|
||
of the line.
|
||
|
||
## Import Note for Windows Users
|
||
|
||
The backslash character (`\`) is a special character in a string delimited by
|
||
double quotes (`"`). If you are working with folders in your paths, you should
|
||
either use **single quotes** to delimit your strings or escape your backslash
|
||
by doubling it like `"some\\path"`.
|
||
|
||
## Loading Compass Plugins
|
||
|
||
Compass relies on the ruby `require` mechanism to load other libraries of code.
|
||
To load a compass-compatible plugin, simply require it at the top of your
|
||
configuration file. If you used the -r option to access another library at project
|
||
creation time, this will already be set up for you.
|
||
|
||
Example:
|
||
|
||
require 'ninesixty'
|
||
require 'susy'
|
||
|
||
## Overriding Configuration Settings
|
||
|
||
When using the compass command line, configuration options that you set on the
|
||
command line will override the corresponding settings in your configuration file.
|
||
|
||
## Configuration Properties
|
||
|
||
<table>
|
||
<tr>
|
||
<th>Property Name</th>
|
||
<th>Type </th>
|
||
<th>Description </th>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>project_type</code> </td>
|
||
<td style="vertical-align:top;">Symbol </td>
|
||
<td style="vertical-align:top;">Can be <code>:stand_alone</code> or
|
||
<code>:rails</code>. Defaults to <code>:stand_alone</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>environment</code> </td>
|
||
<td style="vertical-align:top;">Symbol </td>
|
||
<td style="vertical-align:top;">The environment mode.
|
||
Defaults to <code>:production</code>, can also be <code>:development</code>
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>project_path</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">Not needed in <code>:stand_alone</code> mode
|
||
where it can be inferred by context. Sets the path to the root of the project.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>http_path</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The path to the project when running within the
|
||
web server. Defaults to <code>"/"</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>css_dir</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The directory where the css stylesheets are kept.
|
||
It is relative to the <code>project_path</code>.
|
||
Defaults to <code>"stylesheets"</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>sass_dir</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The directory where the sass stylesheets are kept.
|
||
It is relative to the <code>project_path</code>. Defaults to <code>"src"</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>images_dir</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The directory where the images are kept.
|
||
It is relative to the <code>project_path</code>.
|
||
Defaults to <code>"images"</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>javascripts_dir</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The directory where the javascripts are kept.
|
||
It is relative to the <code>project_path</code>. Defaults to
|
||
<code>"javascripts"</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>output_style</code> </td>
|
||
<td style="vertical-align:top;">Symbol </td>
|
||
<td style="vertical-align:top;">The output style for the compiled css.
|
||
One of: <code>:nested</code>, <code>:expanded</code>, <code>:compact</code>,
|
||
or <code>:compressed</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>relative_assets</code> </td>
|
||
<td style="vertical-align:top;">Boolean </td>
|
||
<td style="vertical-align:top;">Indicates whether the compass helper functions
|
||
should generate relative urls from the generated css to assets, or absolute urls
|
||
using the http path for that asset type.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>http_images_path</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The full http path to images on the web server.
|
||
Defaults to <code>http_path + "/" + images_dir</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>http_stylesheets_path</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The full http path to stylesheets on the web server. Defaults to <code>http_path + "/" + css_dir</code>. </td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>http_javascripts_path</code> </td>
|
||
<td style="vertical-align:top;">String </td>
|
||
<td style="vertical-align:top;">The full http path to javascripts on the web server.
|
||
Defaults to <code>http_path + "/" + javascripts_dir</code>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>additional_import_paths</code> </td>
|
||
<td style="vertical-align:top;">Array of Strings </td>
|
||
<td style="vertical-align:top;">Other paths on your system from which to import
|
||
sass files. See the <code>add_import_path</code> function for a simpler
|
||
approach.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>sass_options</code> </td>
|
||
<td style="vertical-align:top;">Hash </td>
|
||
<td style="vertical-align:top;">These options are passed directly to the
|
||
Sass compiler. For more details on the format of sass options, please read the
|
||
<a href="http://sass-lang.com/docs/yardoc/SASS_REFERENCE.md.html#options">sass options documentation</a>.
|
||
</td>
|
||
</tr>
|
||
<tr>
|
||
<td style="vertical-align:top;"><code>line_comments</code> </td>
|
||
<td style="vertical-align:top;">Boolean </td>
|
||
<td style="vertical-align:top;">Indicates whether line comments should be added
|
||
to compiled css that says where the selectors were defined. Defaults to false
|
||
in production mode, true in development mode.
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
|
||
## Configuration Functions
|
||
|
||
**`add_import_path`** – Call this function to add a path to the list of sass import
|
||
paths for your compass project. E.g.:
|
||
|
||
add_import_path "/Users/chris/work/shared_sass"
|
||
|
||
---
|
||
|
||
**`asset_host`** – Pass this function a block of code that will define the asset
|
||
host url to be used. The block must return a string that starts with a protocol
|
||
(E.g. http). The block will be passed the root-relative url of the asset.
|
||
For example, this picks one of four asset hosts numbered 0-3, depending on
|
||
the name of the asset:
|
||
|
||
asset_host do |asset|
|
||
"http://assets%d.example.com" % (asset.hash % 4)
|
||
end
|
||
|
||
By default there is no asset host used. When `relative_assets` is true
|
||
the asset host configuration is ignored.
|
||
|
||
---
|
||
|
||
**`asset_cache_buster`** – Pass this function a block of code that defines the
|
||
cache buster strategy to be used. The block must return nil or a string that can
|
||
be appended to a url as a query parameter. The returned string must not include
|
||
the starting `?`. The block will be passed the root-relative url of the asset.
|
||
If the block accepts two arguments, it will also be passed a path
|
||
that points to the asset on disk — which may or may not exist.
|
||
|
||
# Increment the deploy_version before every release to force cache busting.
|
||
deploy_version = 1
|
||
asset_cache_buster do |http_path, real_path|
|
||
if File.exists?(real_path)
|
||
File.mtime(real_path).strftime("%s")
|
||
else
|
||
"v=#{deploy_version}"
|
||
end
|
||
end
|