Passing "null" encryption from parameters.ini and using it in config.yml

Question

I am trying to set a null value in app/config/parameters.ini and use it in app/config/config.yml for the swiftmailer.encryption config parameter. I need to set it in parameters.ini because I have different environments that each use different mail configuration.

The Symfony documentation says that this config parameter should be a string value and that "valid values are tls, ssl, or null".

My first guess would be to add mailer_encryption="null" to parameters.ini and encryption: %mailer_encryption% to config.yml. But that results in an error:

"InvalidConfigurationException: Invalid configuration for path "swiftmailer.encryption": The "null" encryption is not supported".

If I use mailer_encryption=null or mailer_encryption= in parameters.ini, I get another error:

"InvalidConfigurationException: Invalid configuration for path "swiftmailer.encryption": The "" encryption is not supported".

If I stop referencing the parameter by changing config.yml to encryption:, it works but this doesn't solve my objective.

I am using Symfony 2.0.15, which includes Swiftmailer with it. This is the 2.0 branch.

How can I get this working?

Answer 1

AFAIK, you can use yml format of parameters file. So try to create parameters.yml and import it to your config.yml