將symfony 2.3 LTS升級到2.6

Question

我想升級基於symfony 2.3的symfony應用程序。我想爲表單使用引導主題的新功能。

我之前從未進行過symfony升級，因此我從symfony食譜中閱讀了本章。

http://symfony.com/doc/current/cookbook/upgrading.html

在那之後，我已經在我的 「composer.json」 並輸入 「作曲家更新的symfony/symfony中」 的變化，但我得到了以下錯誤消息

Loading composer repositories with package information 
Updating dependencies (including require-dev) 
Your requirements could not be resolved to an installable set of packages. 

Problem 1 
- don't install symfony/event-dispatcher 2.6.x-dev|don't install symfony/symfony v2.6.3 
- don't install symfony/symfony v2.6.3|remove symfony/event-dispatcher 2.6.x-dev 
- Installation request for symfony/symfony 2.6.3 -> satisfiable by symfony/symfony[v2.6.3]. 
- Installation request for symfony/event-dispatcher == 2.6.9999999.9999999-dev -> satisfiable by symfony/event-dispatcher[2.6.x-dev]. 

我「作曲.json「：

{ 
    "name": "symfony/framework-standard-edition", 
    "license": "MIT", 
    "type": "project", 
    "description": "The \"Symfony Standard Edition\" distribution", 
    "autoload": { 
     "psr-0": { "": "src/" } 
    }, 
    "require": { 
     "php": ">=5.3.3", 
     "symfony/symfony": "2.6.*", 
     "doctrine/orm": "~2.2,>=2.2.3", 
     "doctrine/doctrine-bundle": "1.2.*", 
     "twig/extensions": "1.0.*", 
     "symfony/assetic-bundle": "2.3.*", 
     "kriswallsmith/assetic": "1.1.2", 
     "symfony/swiftmailer-bundle": "2.3.*", 
     "symfony/monolog-bundle": "2.4.*", 
     "sensio/distribution-bundle": "2.3.*", 
     "sensio/framework-extra-bundle": "2.3.*", 
     "sensio/generator-bundle": "2.3.*", 
     "incenteev/composer-parameter-handler": "~2.0", 
     "knplabs/knp-menu": "2.0.*@dev", 
     "knplabs/knp-menu-bundle": "2.0.*@dev", 
     "symfony/event-dispatcher": "2.6.*@dev", 
     "knplabs/doctrine-behaviors": "dev-master", 
     "a2lix/translation-form-bundle": "dev-master", 
     "knplabs/knp-paginator-bundle": "~2.4", 
     "jms/serializer-bundle": "~0.13" 
    }, 
    "scripts": { 
     "post-install-cmd": [ 
      "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile" 
     ], 
     "post-update-cmd": [ 
      "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets", 
      "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile" 
     ] 
    }, 
    "config": { 
     "bin-dir": "bin" 
    }, 
    "minimum-stability": "stable", 
    "extra": { 
     "symfony-app-dir": "app", 
     "symfony-web-dir": "web", 
     "incenteev-parameters": { 
      "file": "app/config/parameters.yml" 
     }, 
     "branch-alias": { 
      "dev-master": "2.3-dev" 
     } 
    } 
} 

有人能給我一個小費嗎？

Answer 1

您不應該手動指定事件分派器。卸下，然後看看這個文件：

https://github.com/symfony/symfony-standard/blob/2.6/composer.json

確保您的作曲家依賴匹配的一切。還要確保你有"dev-master": "2.6-dev"在branch-alias