# Component Installer for [Composer](http://getcomposer.org) [](http://travis-ci.org/RobLoach/component-installer)
Allows installation of Components via [Composer](http://getcomposer.org).
## Install
```
composer require robloach/component-installer
```
``` json
{
"require": {
"robloach/component-installer": "*"
}
}
```
## Usage
To install a Component with Composer, add the Component to your *composer.json*
`require` key. The following will install [jQuery](http://jquery.com) and
[normalize.css](https://github.com/necolas/normalize.css):
```
composer require components/jquery
composer require components/normalize.css
```
``` json
{
"require": {
"components/jquery": "2.*",
"components/normalize.css": "3.*",
"robloach/component-installer": "*"
}
}
```
### Using the Component
The easiest approach is to use the Component statically. Just reference the
Components manually using a `script` or `link` tag:
``` html
```
For complex projects, a [RequireJS](http://requirejs.org) configuration is
available, which allows autoloading scripts only when needed. A *require.css*
file is also compiled, including all Component stylesheets:
``` html
jQuery+RequireJS Component Installer Sample Page
```
## Configuration
There are a number of ways to alter how Components are installed and used.
### Installation Directory
It is possible to switch where Components are installed by changing the
`component-dir` option in your root *composer.json*'s `config`. The following
will install jQuery to *public/jquery* rather than *components/jquery*:
``` json
{
"require": {
"components/jquery": "*"
},
"config": {
"component-dir": "public"
}
}
```
Defaults to `components`.
### Base URL
While `component-dir` depicts where the Components will be installed,
`component-baseurl` tells RequireJS the base path that will use when attempting
to load the scripts in the web browser. It is important to make sure the
`component-baseurl` points to the `component-dir` when loaded externally. See
more about [`baseUrl`](http://requirejs.org/docs/api.html#config-baseUrl) in the
RequireJS documentation.
``` json
{
"require": {
"components/jquery": "*"
},
"config": {
"component-dir": "public/assets",
"component-baseurl": "/assets"
}
}
```
Defaults to `components`.
### Assetic filters
``` json
{
"require": {
"components/jquery": "*"
},
"config": {
"component-dir": "public/assets",
"component-baseurl": "/assets",
"component-scriptFilters": {
"\\Assetic\\Filter\\GoogleClosure\\CompilerApiFilter": []
},
"component-styleFilters": {
"\\Assetic\\Filter\\CssImportFilter": []
}
}
}
```
## Creating a Component
To set up a Component to be installed with Component Installer, have it
`require` the package *robloach/component-installer* and set the `type` to
*component*, but it is not necessary:
``` json
{
"name": "components/bootstrap",
"type": "component",
"require": {
"robloach/component-installer": "*"
},
"extra": {
"component": {
"scripts": [
"js/bootstrap.js"
],
"styles": [
"css/bootstrap.css"
],
"files": [
"img/*.png",
"js/bootstrap.min.js",
"css/bootstrap.min.css"
]
}
}
}
```
* `scripts` - List of all the JavaScript files that will be concatenated
together and processed when loading the Component.
* `styles` - List of all the CSS files that should be concatenated together
into the final *require.css* file.
* `files` - Any additional file assets that should be copied into the Component
directory.
### Component Name
Components can provide their own Component name. The following will install
jQuery to *components/myownjquery* rather than *components/jquery*:
``` json
{
"name": "components/jquery",
"type": "component",
"extra": {
"component": {
"name": "myownjquery"
}
}
}
```
Defaults to the package name, without the vendor.
### RequireJS Configuration
Components can alter how [RequireJS](http://requirejs.org) registers and
interacts with them by changing some of the [configuration
options](http://www.requirejs.org/docs/api.html#config):
``` json
{
"name": "components/backbone",
"type": "component",
"require": {
"components/underscore": "*"
},
"extra": {
"component": {
"shim": {
"deps": ["underscore", "jquery"],
"exports": "Backbone"
},
"config": {
"color": "blue"
}
}
},
"config": {
"component": {
"waitSeconds": 5
}
}
}
```
Current available RequireJS options for individual packages include:
* [`shim`](http://www.requirejs.org/docs/api.html#config-shim)
* [`config`](http://www.requirejs.org/docs/api.html#config-moduleconfig)
* Anything that's passed through `config.component` is sent to Require.js
### Packages Without Composer Support
Using [`repositories`](http://getcomposer.org/doc/05-repositories.md#repositories)
in *composer.json* allows use of Component Installer in packages that don't
explicitly provide their own *composer.json*. In the following example, we
define use of [html5shiv](https://github.com/aFarkas/html5shiv):
``` json
{
"require": {
"afarkas/html5shiv": "3.6.*"
},
"repositories": [
{
"type": "package",
"package": {
"name": "afarkas/html5shiv",
"type": "component",
"version": "3.6.2",
"dist": {
"url": "https://github.com/aFarkas/html5shiv/archive/3.6.2.zip",
"type": "zip"
},
"source": {
"url": "https://github.com/aFarkas/html5shiv.git",
"type": "git",
"reference": "3.6.2"
},
"extra": {
"component": {
"scripts": [
"dist/html5shiv.js"
]
}
},
"require": {
"robloach/component-installer": "*"
}
}
}
]
}
```
### Packages Without Component Support In *composer.json*
Using [`extra`](https://getcomposer.org/doc/04-schema.md#extra)
in *composer.json* allows use of Component Installer in packages that don't
explicitly provide support for component, but do ship with their own *composer.json*.
Using `extra` with packages that ship with Component Installer, will override component's settings for that package.
``` json
{
"require": {
"datatables/datatables": "~1.10"
},
"extra": {
"component": {
"datatables/datatables": {
"scripts": [
"media/js/jquery.dataTables.js"
],
"styles": [
"media/css/jquery.dataTables.css"
],
"files": [
"media/js/jquery.dataTables.min.js",
"media/css/jquery.dataTables.min.css",
"media/images/*.png"
]
}
}
}
}
```
## Not Invented Here
There are many other amazing projects from which Component Installer was
inspired. It is encouraged to take a look at some of the [other great package
management systems](http://github.com/wilmoore/frontend-packagers):
* [npm](http://npmjs.org)
* [bower](http://twitter.github.com/bower/)
* [component](http://github.com/component/component)
* [Jam](http://jamjs.org)
* [volo](http://volojs.org)
* [Ender](http://ender.jit.su)
* etc
## License
Component Installer is licensed under the MIT License - see LICENSE.md for
details.