til/rails/check-how-database-is-configured.md

Check How Database Is Configured

While making some adjustments to the database connection string (DATABASE_URL) for a pre-production Rails environment, we wanted to check that configuration options like sslmode were picked up.

From a rails console session I can check the live database configuration like so:

> ActiveRecord::Base.connection_db_config.configuration_hash
=> {
  adapter: "postgresql",
  encoding: "unicode",
  pool: 5,
  database: "my_app_development"
}

I can look at the configuration_hash from rails console of my pre-prod environment to see more configuration settings:

> ActiveRecord::Base.connection_db_config.configuration_hash
=> {
  adapter: "postgresql",
  encoding: "unicode",
  pool: 5,
  username: "app_user",
  password: "super_s3cr3t",
  port: 15432,
  database: "pre_prod_database",
  host: "some-host-123.ondigitalocean.com",
  sslmode: "verify-full"
}

Since I was specifically looking for the sslmode value, I can access that directly:

> ActiveRecord::Base.connection_db_config.configuration_hash[:sslmode]
=> "verify-full"