Collecting hashes into OpenStruct creates “table” entry

Question

Why this (evaluated in Rails console)

[{:a => :b}].collect {|x| OpenStruct.new(x)}.to_json

adds a \"table\" record in there?

Answer 1

With ruby 2.1.2 you can use the following to get JSON without the table root element:

[{:a => :b}].collect {|x| OpenStruct.new(x).to_h}.to_json
 => "[{\"a\":\"b\"}]"