Rails，Grape从集合中创建自定义JSON

Question

I started to learn how to use Grape. I have collection with a lot of attributes and want only some of them. I did something like this:

get :all_elements do
    [
      my_collection.each do |element|
          {
           id: element.id,
           name: element.name
          }
      end
    ]
end

However this is not working. How can I create custom json array from collection?

Answer 1

Please try this code.

list = my_collection.map do |element|
           { :id => element.id,
             :name => element.email
           }
       end

list.to_json