Plugin: install dependencies / dump autoload

bedrock
, ,
1

A WordPress plugin is installed as a composer package using composer.
The plugin itself also requires composer packages on its own.
Can composer automatically install the required packages, too?

2

It can. What have you tried?

1 Like
3

composer install – but no vendor/ folder was installed.

$ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev) from lock file
Package operations: 1 install, 0 updates, 0 removals
- Installing my/test-plugin (v2.1.0): Cloning 2ca3493020 from cache
Generating autoload files

composer.json of plugin:

{
    "name": "my/test-plugin",
    "description": "Test",
    "keywords": [
        "WordPress", "plugin", "test"
    ],
    "license": "MIT",
    "type": "wordpress-plugin",
    "require": {
        "php": ">=5.4.0",
        "composer/installers": "~1.0",
        "league/uri": "^5.2"
    },
    "minimum-stability": "dev"
}

"league/uri": "^5.2" should be installed + autoloader dumped.

Plugin has currently issues requiring the composer autoloader:

( ! ) Warning: require(vendor/autoload.php): failed to open stream: No such file or directory in [...]

I had to cwd into the plugin directory and run composer install manually.

4

Apparently composer autoloading is handled differently when the plugin is installed into WordPress compared to standalone development, there is a site/vendor directory.

I added a condition for requiring the autoload.php file
and now the use seem to work correctly.

if ( file_exists( __DIR__ . '/vendor/autoload.php' ) )
    require __DIR__ . '/vendor/autoload.php';
2 Likes