ruby-trello gem配置代码放置位置咨询 - Rails API授权错误排查

Got it, let's sort out that Trello::ConfigurationError you're running into. The root problem is the placement of your ruby-trello configuration code—putting it directly inside the Application class in config/application.rb doesn't ensure it loads at the right time for the gem to pick up the credentials.

Here are the two reliable solutions to get your config working:

1. Use a Dedicated Initializer (Recommended) #

This is the cleanest and most Rails-idiomatic approach. Initializer files in config/initializers load automatically when your app starts, guaranteeing the trello config is set before any API calls are made.

• Create a new file at config/initializers/trello.rb
• Add your configuration code here (pro tip: use environment variables instead of hardcoding sensitive keys!):

  Trello.configure do |config|
    config.developer_public_key = ENV['TRELLO_DEV_PUBLIC_KEY']
    config.member_token = ENV['TRELLO_MEMBER_TOKEN']
  end
  

• For local development, you can use a gem like dotenv-rails to manage these environment variables safely without committing them to version control.

2. Adjust Placement in application.rb (If You Prefer) #

If you want to keep the config in application.rb, wrap it in a before_initialize callback. This ensures the config runs early in the app initialization process, before the trello gem tries to make authorized requests:

module YourAppName
  class Application < Rails::Application
    # Your existing app config...

    config.before_initialize do
      Trello.configure do |config|
        config.developer_public_key = 'my_trello_key'
        config.member_token = 'my_trello_token'
      end
    end
  end
end

Quick Check to Verify Configuration #

Once you've set up the config correctly, fire up your Rails console and run:

Trello.client

You should see an output that includes your developer public key and member token, confirming the config is loaded properly.

内容的提问来源于stack exchange，提问作者Anatolii Stupin