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nevvermind 2015-06-02 19:09:57 +01:00
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doc/articles/plugins.md
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@ -16,7 +16,7 @@ specific logic.
## Creating a Plugin
A plugin is a regular composer package which ships its code as part of the
A plugin is a regular Composer package which ships its code as part of the
package and may also depend on further packages.
### Plugin Package
@ -24,23 +24,36 @@ package and may also depend on further packages.
The package file is the same as any other package file but with the following
requirements:
1. the [type][1] attribute must be `composer-plugin`.
2. the [extra][2] attribute must contain an element `class` defining the
1. The [type][1] attribute must be `composer-plugin`.
2. The [extra][2] attribute must contain an element `class` defining the
class name of the plugin (including namespace). If a package contains
multiple plugins this can be array of class names.
multiple plugins, this can be array of class names.
3. You must require the special package called `composer-plugin-api`
to define which Plugin API versions your plugin is compatible with.
Additionally you must require the special package called `composer-plugin-api`
to define which composer API versions your plugin is compatible with. The
current composer plugin API version is 1.0.0.
The required version of the `composer-plugin-api` follows the same [rules][7]
as a normal package's, except for the `1.0`, `1.0.0` and `1.0.0.0` _exact_
values. In only these three cases, Composer will assume your plugin
actually meant `^1.0` instead. This was introduced to maintain BC with
the old style of declaring the Plugin API version.
For example
In other words, `"require": { "composer-plugin-api": "1.0.0" }` means
`"require": { "composer-plugin-api": "^1.0" }`.
The current composer plugin API version is 1.0.0.
An example of a valid plugin `composer.json` file (with the autoloading
part omitted):
```json
{
"name": "my/plugin-package",
"type": "composer-plugin",
"require": {
"composer-plugin-api": "1.0.0"
"composer-plugin-api": "~1.0"
},
"extra": {
"class": "My\\Plugin"
}
}
```
@ -149,3 +162,4 @@ local project plugins are loaded.
[4]: https://github.com/composer/composer/blob/master/src/Composer/Composer.php
[5]: https://github.com/composer/composer/blob/master/src/Composer/IO/IOInterface.php
[6]: https://github.com/composer/composer/blob/master/src/Composer/EventDispatcher/EventSubscriberInterface.php
[7]: ../01-basic-usage.md#package-versions