Coercing collections?

[maxlinc]

I find myself coercing collections fairly often. I haven't figured out an easy way to do this with Hashie, but maybe one exists and just isn't obvious.

Here is an example of something similar from roar:

module AlbumRepresenter
  include Roar::Representer::JSON

  property :title
  collection :songs, extend: SongRepresenter, class: Song
end

I usually end up doing something like this, since Hashie's coercion doesn't seem to have any built-in support for collections/arrays:

require 'hashie'

class User < Hashie::Mash; end

class Users < Set
  # Custom coercion for Hashie to handle collection
  def self.coerce(obj)
    data = obj.map do |value|
      User.new(value)
    end
    new data
  end
end

class Tweet < Hashie::Mash
  include Hashie::Extensions::Coercion
  coerce_key :user, User
  coerce_key :mentions, Users
end

larry = { name: "Larry" }
moe = { name: "Moe" }
curly = { name: "Curly" }
tweet = Tweet.new(user: larry, mentions: [moe, curly])
puts tweet.inspect
#<Tweet mentions=#<Users: {#<User name="Moe">, #<User name="Curly">}> user=#<User name="Larry">>

Is there a simpler way to do this that doesn't require the extra class and coerce method?

[dblock]

I don't think there's a simpler way, but lets leave this as a feature request. I am open to a PR that makes this easier!

[gregory]

@dblock & @maxlinc sounds like this PR can be closed now right?

[dblock]

Yep, thx.