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Maintenance Ruby 3.4 gets fixes, but no new features. Switch to Ruby 4.0 →

instance method

OpenStruct#to_json

(?::JSON::State? state) -> ::String
to_json(*args)

Returns a JSON string representing self:

Example
require 'json/add/ostruct'
puts OpenStruct.new('name' => 'Rowdy', :age => nil).to_json

Output:

Example
{"json_class":"OpenStruct","t":{'name':'Rowdy',"age":null}}
See also #to_h #to_s #set_ostruct_member_value! also in 4.0 · 3.3 · 3.2 · 3.1 · 3.0