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作曲家Laravel的require和require-dev依赖关系

[英]require and require-dev dependencies of composer Laravel

原文 2017-09-25 18:09:27 9 2 php/ laravel/ composer-php

I have a Laravel App and I want to install require dependencies but I was wondering how does composer know whether to load dev dependencies or production dependencies? 我有一个Laravel App，我想安装需要依赖项，但是我想知道作曲家如何知道是加载开发依赖项还是生产依赖项？

just got confused by this concept so if somebody could clarify this concept for me than that would be of great help. 只是对这个概念感到困惑，因此，如果有人可以为我澄清这个概念，那将大有帮助。

2 个解决方案

The regular require dependencies are such packages that you will ALWAYS use, meaning that the framework itself (in this case Laravel), your application code and/or other 3rd party code is dependent on such packages. 常规的require依赖关系是您将始终使用的此类软件包，这意味着框架本身（在本例中为Laravel），您的应用程序代码和/或其他第三方代码均依赖于此类软件包。 These dependencies are often referred as prod dependencies since you use them in production (because without them, your app wouldn't run) 这些依赖项通常称为prod依赖项，因为您在生产中使用了它们（因为没有它们，您的应用程序将无法运行）

The require-dev dependencies are "optional", in the sense that your core application logic would run, but you would not be able to run "development" stuff, such as Unit tests ( phpunit/phpunit package) and instantiate fake data ( fzaninotto/faker ). 在您的核心应用程序逻辑可以运行的意义上， require-dev依赖项是“可选的”，但您将无法运行“开发”的东西，例如单元测试（ phpunit/phpunit软件包）和实例化伪造的数据（ fzaninotto/faker ）。

I hope this helps! 我希望这有帮助！

When you run composer install --dev , composer installs all packages including require-dev . 运行composer install --dev ，composer将安装所有软件包，包括require-dev 。 This is the default behaviour, exclusion of the flag would result in the same action. 这是默认行为，排除标志将导致相同的操作。

When you run composer install --no-dev , composer skips the require-dev packages. 当您运行composer install --no-dev ，composer会跳过require-dev软件包。

Also, composer will not install the require-dev package of a required package unless you specifically ask it to do so 此外，除非您明确要求，composer不会安装required软件包的require-dev软件包。