Separate the part of Composer Autoload Psr from `aliases`

[kids-return]

According to the definition of the alias for the document, the alias should only be used to handle Paths and URLs. The value of the alias can only be a string See: https://www.yiiframework.com/doc/guide/2.0/en/concept-aliases

And Composer Autoload Psr map can be an array After separation, we will be able to implement more useful features and comply with Psr E.g: Supports multiple directories with namespace, which can be used for migration and base template combination. Of course there are many See: https://github.com/yiisoft/db/issues/29#issuecomment-440586266

I think can add an PsrAliases.php file. You can use it like the alias component. The property is read-only, and the content inside is completely generated according to composer

The original alias is configured by config.

    'aliases' => [
        '__class'   => yii\base\Aliases::class,
        '@root'     => YII_ROOT,
        '@vendor'   => '@root/vendor',
        '@public'   => '@root/public',
        '@runtime'  => '@root/runtime',
        '@bower'    => '@vendor/bower-asset',
        '@npm'      => '@vendor/npm-asset',
        '@yii'      => '@vendor/yiisoft/yii-core/src',
        '@yiisoft'  => '@vendor/yiisoft',
    ],

Because aliases are basically only used for paths, it will be more intuitive.

public $sourcePath = '@yiisoft/yii-jquery/src/assets';
or
public $sourcePath = '@vendor/yiisoft/yii-jquery/src/assets';

Users can configure custom aliases based on their own needs. I am working on the relevant changes, and if I allow me to perfect it. And submit PR. Is there a good suggestion if you name it?

[schmunk42]

The autoloading feature is very useful when developing extensions meant for vendor in another folder or when creating extensions.

[kids-return]

Forgive me for not understanding, can you tell me your opinion? 🥺 or 👍 👎

[hiqsol]

@kids-return Sorry, I didn't understand. Can you please give more explanation of your idea.

[schmunk42]

@kids-return There's no simply yes or no from my side. I was just pointing out a useful feature at the moment, which should be kept, if there's no better alternative. It looks like your proposal touches that part.

[kids-return]

before

            'aliases' => yii\base\Aliases#9
            (
                [yii\base\Aliases:aliases] => [
                    '@yii' => [
                        '@yii/widgets' => '/data/wwwroot/yii3/vendor/yiisoft/view/src/widgets'
                        '@yii/web/tests' => '/data/wwwroot/yii3/vendor/yiisoft/yii-web/tests'
                        '@yii/web' => '/data/wwwroot/yii3/vendor/yiisoft/yii-web/src'
                        '@yii/view' => '/data/wwwroot/yii3/vendor/yiisoft/view/src/view'
                        '@yii/tests' => '/data/wwwroot/yii3/vendor/yiisoft/yii-core/tests'
                        '@yii/swiftmailer' => '/data/wwwroot/yii3/vendor/yiisoft/yii-swiftmailer/src'
                        '@yii/rest' => '/data/wwwroot/yii3/vendor/yiisoft/yii-rest/src'
                        '@yii/log' => '/data/wwwroot/yii3/vendor/yiisoft/log/src'
                        '@yii/jquery' => '/data/wwwroot/yii3/vendor/yiisoft/yii-jquery/src'
                        '@yii/di' => '/data/wwwroot/yii3/vendor/yiisoft/di/src'
                        '@yii/db/tests' => '/data/wwwroot/yii3/vendor/yiisoft/db/tests'
                        '@yii/db' => '/data/wwwroot/yii3/vendor/yiisoft/db/src'
                        '@yii/console' => '/data/wwwroot/yii3/vendor/yiisoft/yii-console/src'
                        '@yii/captcha' => '/data/wwwroot/yii3/vendor/yiisoft/yii-captcha/src'
                        '@yii/cache/tests' => '/data/wwwroot/yii3/vendor/yiisoft/cache/tests'
                        '@yii/cache' => '/data/wwwroot/yii3/vendor/yiisoft/cache/src'
                        '@yii/bootstrap4' => '/data/wwwroot/yii3/vendor/yiisoft/yii-bootstrap4/src'
                        '@yii/app' => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'
                        '@yii/activerecord/tests' => '/data/wwwroot/yii3/vendor/yiisoft/active-record/tests'
                        '@yii/activerecord' => '/data/wwwroot/yii3/vendor/yiisoft/active-record/src'
                        '@yii' => '/data/wwwroot/yii3/vendor/yiisoft/yii-core/src'
                    ]
                    '@Psr' => [
                        '@Psr/SimpleCache' => '/data/wwwroot/yii3/vendor/psr/simple-cache/src'
                        '@Psr/Log' => '/data/wwwroot/yii3/vendor/psr/log/Psr/Log'
                        '@Psr/Http/Message' => '/data/wwwroot/yii3/vendor/psr/http-message/src'
                        '@Psr/Container' => '/data/wwwroot/yii3/vendor/psr/container/src'
                    ]
                    '@Doctrine' => [
                        '@Doctrine/Common/Lexer' => '/data/wwwroot/yii3/vendor/doctrine/lexer/lib/Doctrine/Common/Lexer'
                    ]
                    '@Egulias' => [
                        '@Egulias/EmailValidator' => '/data/wwwroot/yii3/vendor/egulias/email-validator/EmailValidator'
                    ]
                    '@Dotenv' => '/data/wwwroot/yii3/vendor/vlucas/phpdotenv/src'
                    '@hiqdev' => [
                        '@hiqdev/composer/config' => '/data/wwwroot/yii3/vendor/hiqdev/composer-config-plugin/src'
                    ]
                    '@root' => '/data/wwwroot/yii3'
                    '@vendor' => '/data/wwwroot/yii3/vendor'
                    '@public' => '/data/wwwroot/yii3/public'
                    '@runtime' => '/data/wwwroot/yii3/runtime'
                    '@bower' => '/data/wwwroot/yii3/vendor/bower-asset'
                    '@npm' => '/data/wwwroot/yii3/vendor/npm-asset'
                    '@app' => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'
                    '@web' => ''
                ]
            )

after

            'aliases' => yii\base\Aliases#9
            (
                [yii\base\Aliases:aliases] => [
                    '@root' => '/data/wwwroot/yii3'
                    '@vendor' => '@root/vendor'
                    '@public' => '@root/public'
                    '@runtime' => '@root/runtime'
                    '@bower' => '@vendor/bower-asset'
                    '@npm' => '@vendor/npm-asset'
                    '@app' => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'
                    '@web' => '/'
                    '@yii' => '/data/wwwroot/yii3/vendor/yiisoft/yii-core/src'
                    '@yiisoft' => '/data/wwwroot/yii3/vendor/yiisoft'
                    '@vendor2' => '/data/wwwroot/yii3/vendor2/yiisoft'
                ]
            )

            'psrAliases' => yii\base\PsrAliases#9
            (
                [yii\base\Aliases:aliases] => [
                    '@yii' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-core/src'
                    ]
                    '@yii/tests' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-core/tests'
                    ]
                    '@yii/rest' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-rest/src'
                    ]
                    '@yii/view' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/view/src/view'
                    ]
                    '@yii/widgets' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/view/src/widgets'
                    ]
                    '@Psr/Http/Message' => [
                        0 => '/data/wwwroot/yii3/vendor/psr/http-message/src'
                    ]
                    '@yii/web' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-web/src'
                    ]
                    '@yii/web/tests' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-web/tests'
                    ]
                    '@yii/console' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-console/src'
                    ]
                    '@Psr/Container' => [
                        0 => '/data/wwwroot/yii3/vendor/psr/container/src'
                    ]
                    '@yii/di' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/di/src'
                    ]
                    '@Psr/Log' => [
                        0 => '/data/wwwroot/yii3/vendor/psr/log/Psr/Log'
                    ]
                    '@yii/log' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/log/src'
                    ]
                    '@Psr/SimpleCache' => [
                        0 => '/data/wwwroot/yii3/vendor/psr/simple-cache/src'
                    ]
                    '@yii/cache' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/cache/src'
                    ]
                    '@yii/cache/tests' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/cache/tests'
                    ]
                    '@yii/db' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/db/src'
                    ]
                    '@yii/db/tests' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/db/tests'
                    ]
                    '@yii/activerecord' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/active-record/src'
                    ]
                    '@yii/activerecord/tests' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/active-record/tests'
                    ]
                    '@yii/jquery' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-jquery/src'
                    ]
                    '@yii/captcha' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-captcha/src'
                    ]
                    '@yii/bootstrap4' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-bootstrap4/src'
                    ]
                    '@Doctrine/Common/Lexer' => [
                        0 => '/data/wwwroot/yii3/vendor/doctrine/lexer/lib/Doctrine/Common/Lexer'
                    ]
                    '@Egulias/EmailValidator' => [
                        0 => '/data/wwwroot/yii3/vendor/egulias/email-validator/EmailValidator'
                    ]
                    '@yii/swiftmailer' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-swiftmailer/src'
                    ]
                    '@Dotenv' => [
                        0 => '/data/wwwroot/yii3/vendor/vlucas/phpdotenv/src'
                    ]
                    '@hiqdev/composer/config' => [
                        0 => '/data/wwwroot/yii3/vendor/hiqdev/composer-config-plugin/src'
                    ]
                    '@yii/app' => [
                        0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-web/src'
                        1 => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'
                    ]
                ]
            )

'@yii/app' => [
   0 => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-web/src'
   1 => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'
]

modify This behavior is wrong

'@yii/app' => '/data/wwwroot/yii3/vendor/yiisoft/yii-base-cli/src'

composer support! what if the user needs to use multiple directories?

[kids-return]

old

yii migrate/up --migration-path=@leonsw/wallet/migrations,@leonsw/user/migrations,@leonsw/post/migrations,@leonsw/tag/migrations

now

yii migrate/up --migration-path=@leonsw/migrations

use $psrAliases->get('@leonsw/migrations') Can get multiple directories I think this is the right thing.

Aliases are used to represent file paths or URLs so that you don't have to hard-code absolute paths or URLs in your project. An alias must start with the @ character to be differentiated from normal file paths and URLs. Alias defined without leading @ will be prefixed with @ character.

I suggest you look at the above again.

[kids-return]

i18n

$psrAliases->get('@leonsw/messages')

[samdark]

Done.