Problem flattening multiple nested properties via Trash

[dub-squared]

I've come across a possible issue when trying to flatten multiple properties from a nested hash. It works file when I'm only flattening one property, but when a second one is added both no longer work. I've also been able to narrow it down to string keys. If I symbolize the keys, the flattening works as expected. (See last example).

I can work around it by just calling deep_symbolize_keys prior to passing it to the Trash, but that leaves a bit of a code smell. Any input is appreciated.

Sample Class:

class Person < Hashie::Trash
  include Hashie::Extensions::IndifferentAccess
  include Hashie::Extensions::IgnoreUndeclared

  property :first_name, from: :name, transform_with: ->(name) { name['first'] }
  property :last_name, from: :name, transform_with: ->(name) { name['last'] }
  property :primary_phone, from: :phoneNumbers, transform_with: ->(numbers) { numbers['primary'] }
end

Sample Hash:

{"name"=>{"first"=>"First", "last"=>"Last"}, "phoneNumbers"=>{"primary"=>"9999999999"}}

Output:

irb(main):001:0> hash = {"name"=>{"first"=>"First", "last"=>"Last"}, "phoneNumbers"=>{"primary"=>"9999999999"}}
=> {"name"=>{"first"=>"First", "last"=>"Last"}, "phoneNumbers"=>{"primary"=>"9999999999"}}
irb(main):002:0> person = Person.new(hash)
=> #<Person primary_phone="9999999999">

If I symbolize the the top level keys everything works as expected

Output with symbolized keys:

irb(main):003:0> hash = {"name"=>{"first"=>"First", "last"=>"Last"}, "phoneNumbers"=>{"primary"=>"9999999999"}}
=> {"name"=>{"first"=>"First", "last"=>"Last"}, "phoneNumbers"=>{"primary"=>"9999999999"}}
irb(main):004:0> person = Person.new(hash.symbolize_keys)
=> #<Person first_name="First" last_name="Last" primary_phone="9999999999">

[dblock]

Looks like a bug to me. Turn it into a spec, try to fix it, we can help.

[jitendra1998]

Hi @dblock and @dub-squared, interested in working on it.

[jitendra1998]

After some debugging, found that Hashie::Extensions::IgnoreUndeclared is causing issue