如何用Capistrano或Phing有条件地替换配置文件中的令牌？

问题描述

我想尝试使用Capistrano部署一个PHP应用程序，但看不到用于替代不同环境的配置文件中的令牌的选项。

I would like to try out Capistrano to deploy a PHP application but can't see an option for replacing tokens in config files for different environments.

我是使用Slim微框架，它只是在index.php中使用一个数组来配置数据库用户名等变量。我想在那里将令牌，如％dbuser％，在部署时将根据是否部署到分段或生产。

I'm using the Slim microframework which just uses an array in index.php for config variables like database username etc. I would like to put tokens such as %dbuser% in there which would be replaced at deploy time based on whether I am deploying to staging or production.

这是否可能在Capistrano？或者我会像Phing这样做吗？

Is this possible in Capistrano? Or would I use something like Phing to do this?

推荐答案

在Phing中，如果您的部署是Phing，您可以使用。

In Phing, if your deployment is Phing based, you could use the ReplaceTokens filter.

示例：

<target name="-modify-config"
        hidden="true" description="Modifies the xyz.conf ">
  <copy file="${some.directory}/xyz.conf.dist"
        tofile="${some.directory}/xyz.conf"
        overwrite="true" >
    <filterchain>
      <replacetokens begintoken="%" endtoken="%">
        <token key="KEY_A" value="${value.a}" />
        <token key="KEY_B" value="${value.b}" /> 
      </replacetokens>
    </filterchain>
  </copy>
</target>

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