在Ruby on Rails 4应用程序上自定义JSON结果

Question

I'm using a ruby on rails backend for a application I'm working on.

I use ActiveModel::Serializer to handle the JSON results of my API:

format.json { render json: data, status: status } 

In some cases I only want to give the user a possibility to query for specific attributes.

So eg a profile has a rank in a highscore which takes "quite long" to be calculated. So if the user passes in an attribute with: requestedAttributes: [:highscore, :messages] I want to return the highscore and the messages in my rendered JSON response. This attributes can change, so writing a Serializer for each listing is not an option!

Can anyone help me with that?

Thanks a lot!

Answer 1

You can provide an option hash to as_json in order to specify the desired attributes.

check here ActiveModel::Serializers::JSON