dongxian3852 2018-11-06 08:36
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在Symfony 2.8中使用现有环境变量

I have an application built using Symfony 2.8. Now, the application config need to access an environment variable. This is not working in Symfony 2.8 (config.yml),

id: "%env(SOME_ID)%"

Is there a way to access it in config.yml file.

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  • dongpenggan6812 2018-11-06 09:02
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    With Symfony 2.8, you can declare some external parameters from your server :

    • With Apache, with the SetEnv directive:

      <VirtualHost *:80>
          ...
          SetEnv    SYMFONY__DATABASE__USER user
          SetEnv    SYMFONY__DATABASE__PASSWORD secret
          SetEnv    SYMFONY__SOME_ID 1234
          ...
      </VirtualHost>
      
    • With Nginx, with fastcgi_param directive:

      server {
        ...
        location ~ ^/app\.php(/|$) {
          ...
          fastcgi_param SYMFONY__DATABASE__USER user;
          fastcgi_param SYMFONY__DATABASE__PASSWORD secret;
          fastcgi_param SYMFONY__SOME_ID 1234
          ...
        }
      }
      

    These environment variables will be passed to the container, with some transformations:

    • SYMFONY__ prefix is removed
    • Parameter name is lowercased
    • Double underscores __ are replaced with a period.

    So you can use them as is:

    doctrine:
        dbal:
        driver:   pdo_mysql
        dbname:   symfony_project
        user:     '%database.user%'
        password: '%database.password%'
    some_config:
        id: '%some_id%'
    

    You can also pass some PHP constants :

    parameters:
        some_id: "@=constant('SOME_ID')"
        my_class.some_id: "@=constant('My_Class::SOME_ID')"
    

    Hope that helps !

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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