symfony和Travis构建作曲家错误

Question

也许你可以帮助我，我正在尝试设置 Travic-ci 帐户，但在构建中，我在作曲家安装时出现错误：

Generating autoload files
Updating the "app/config/parameters.yml" file
  [SymfonyComponentDependencyInjectionExceptionParameterCircularReferenceException]                 
  Circular reference detected for parameter "database_driver" ("database_driver" > "database_driver").  
Script SensioBundleDistributionBundleComposerScriptHandler::clearCache handling the post-install-cmd event terminated with an exception
  [RuntimeException]                                                         
  An error occurred when executing the "'cache:clear --no-warmup'" command.  

我的特拉维斯：

language: php
php:
    - 5.5
before_script:
    - cp app/config/parameters.yml.dist app/config/parameters.yml
    - composer install
script:
    - phpunit -c app

作曲家.json：

{
    "name": "symfony/framework-standard-edition",
    "license": "MIT",
    "type": "project",
    "description": "The "Symfony Standard Edition" distribution",
    "autoload": {
        "psr-0": { "": "src/", "SymfonyStandard": "app/" }
    },
    "require": {
        "php": ">=5.3.3",
        "symfony/symfony": "2.6.*",
        "doctrine/orm": "~2.2,>=2.2.3,<2.5",
        "doctrine/dbal": "<2.5",
        "doctrine/doctrine-bundle": "~1.2",
        "twig/extensions": "~1.0",
        "symfony/assetic-bundle": "~2.3",
        "symfony/swiftmailer-bundle": "~2.3",
        "symfony/monolog-bundle": "~2.4",
        "sensio/distribution-bundle": "~3.0,>=3.0.12",
        "sensio/framework-extra-bundle": "~3.0,>=3.0.2",
        "incenteev/composer-parameter-handler": "~2.0",
        "twbs/bootstrap": "3.3.*@dev",
        "components/jquery": "2.1.*",
        "doctrine/doctrine-fixtures-bundle": "2.2.*",
        "friendsofsymfony/user-bundle": "~2.0@dev"
    },
    "require-dev": {
        "sensio/generator-bundle": "~2.3",
        "ongr/ongr-strict-standard": "~1.0",
        "squizlabs/php_codesniffer": "~1",
        "phpmd/phpmd": "@stable",
        "phpunit/phpunit": "4.6.*"
    },
    "scripts": {
        "post-root-package-install": [
            "SymfonyStandard\Composer::hookRootPackageInstall"
        ],
        "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",
            "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::removeSymfonyStandardFiles",
            "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::prepareDeploymentTarget"
        ],
        "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",
            "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::removeSymfonyStandardFiles",
            "Sensio\Bundle\DistributionBundle\Composer\ScriptHandler::prepareDeploymentTarget"
        ]
    },
    "config": {
        "bin-dir": "bin"
    },
    "extra": {
        "symfony-app-dir": "app",
        "symfony-web-dir": "web",
        "symfony-assets-install": "relative",
        "incenteev-parameters": {
            "file": "app/config/parameters.yml"
        },
        "branch-alias": {
            "dev-master": "2.6-dev"
        }
    }
}

parameters.yml.dist：

此文件是参数.yml文件应具有参数外观的"模板"：

database_driver:   "%database_driver%"
database_host:     "%database_host%"
database_port:     "%database_port%"
database_name:     "%database_name%"
database_user:     "%database_user%"
database_password:  "%database_password%"
# You should uncomment this if you want use pdo_sqlite
# database_path: "%kernel.root_dir%/data.db3"
mailer_transport:  ~
mailer_host:       ~
mailer_user:       ~
mailer_password:   ~
locale:            en
# A secret key that's used to generate certain security-related tokens
secret:            ~
#keys for GoodReads and Amazon API
goodreads_key:      ~
amazon_key:         ~
amazon_secret_key:  ~
amazon_tag:         ~

Answer 1

所有变量（以 %% 表示）都应设置为环境变量，而您的 travis 构建/用户环境缺乏这些变量。