问题描述
我在Symfony 5中启动了一个新项目，并尝试使用composer require easycorp/easyadmin-bundle安装EasyAdmin，但是发现了问题。
作曲家日志：
./composer.json has been updated
Loading composer repositories with package @R_838_4045@ion
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "5.1.*"
Your requirements Could not be resolved to an installable set of packages.
Problem 1
- Conclusion: don't install easycorp/easyadmin-bundle v3.1.3
- Conclusion: don't install easycorp/easyadmin-bundle v3.1.2
- Conclusion: don't install easycorp/easyadmin-bundle v3.1.1
- Conclusion: don't install easycorp/easyadmin-bundle v3.1.0
- Conclusion: don't install easycorp/easyadmin-bundle v3.0.2
- Conclusion: don't install easycorp/easyadmin-bundle v3.0.1
- Conclusion: remove doctrine/common 3.0.2
- Installation request for easycorp/easyadmin-bundle ^3.0 -> satisfiable by easycorp/easyadmin-bundle[v3.0.0,v3.0.1,v3.0.2,v3.1.0,v3.1.1,v3.1.2,v3.1.3].
- Conclusion: don't install doctrine/common 3.0.2
- easycorp/easyadmin-bundle v3.0.0 requires doctrine/common ^2.8 -> satisfiable by doctrine/common[2.12.0,2.13.0,2.13.1,2.13.2,2.13.3,v2.10.0,v2.11.0,v2.8.0,v2.8.1,v2.9.0].
- Can only install one of: doctrine/common[2.12.0,3.0.2].
- Can only install one of: doctrine/common[2.13.0,3.0.2].
- Can only install one of: doctrine/common[2.13.1,3.0.2].
- Can only install one of: doctrine/common[2.13.2,3.0.2].
- Can only install one of: doctrine/common[2.13.3,3.0.2].
- Can only install one of: doctrine/common[v2.11.0,3.0.2].
- Can only install one of: doctrine/common[v2.10.0,3.0.2].
- Can only install one of: doctrine/common[v2.8.0,3.0.2].
- Can only install one of: doctrine/common[v2.8.1,3.0.2].
- Can only install one of: doctrine/common[v2.9.0,3.0.2].
- Installation request for doctrine/common (locked at 3.0.2) -> satisfiable by doctrine/common[3.0.2].
您有解决的想法吗？
解决方法
Easyadmin依赖于教义/普通v2，您需要使用composer remove doctrine/common删除当前教义版本，然后才能安装easyadmin
尝试像这样更改您的composer.json文件：
"type": "project","license": "proprietary","require": {
"php": ">=7.2.5","ext-ctype": "*","ext-iconv": "*","composer/package-versions-deprecated": "^1.11","doctrine/annotations": "^1.10","doctrine/doctrine-bundle": "^2.1","doctrine/doctrine-migrations-bundle": "^3.0","doctrine/orm": "^2.6.3","easycorp/easyadmin-bundle": "3.1","sensio/framework-extra-bundle": "^5.6","symfony/asset": "5.1.*","symfony/console": "5.1.*","symfony/dotenv": "5.1.*","symfony/flex": "^1.3.1","symfony/form": "5.1.*","symfony/framework-bundle": "5.1.*","symfony/maker-bundle": "^1.20","symfony/security-bundle": "5.1.*","symfony/stopwatch": "5.1.*","symfony/twig-bundle": "5.1.*","symfony/validator": "5.1.*","symfony/web-profiler-bundle": "5.1.*","symfony/yaml": "5.1.*","twig/extra-bundle": "^2.12|^3.0","twig/twig": "^2.12|^3.0"
},，然后输入：sudo composer update。适用于Ubuntu 18.04 LTS：）
您会在错误消息列表中看到：在已经安装v3的情况下，v2中的easycorp/easyadmin-bundle要求doctrine/common。
您应该降级该软件包的级别，以便可以安装管理员捆绑包。如果您需要帮助，请在问题中添加composer.json的内容。
您需要降级学说/通用和学说/持久性。
尝试一下：
composer require doctrine/persistence:1.3.8 doctrine/common:2.13.3
那么您应该可以拨打电话：
symfony composer req "admin:^2.0"