Move promotion_group_member to its own model

lib/podio.rb

@@ -137,6 +137,7 @@ def initialize(params = {})
   autoload :Profile,                  'podio/models/profile'
   autoload :Promotion,                'podio/models/promotion'
   autoload :PromotionGroup,           'podio/models/promotion_group'
+  autoload :PromotionGroupMember,     'podio/models/promotion_group_member'
   autoload :Question,                 'podio/models/question'
   autoload :QuestionAnswer,           'podio/models/question_answer'
   autoload :QuestionOption,           'podio/models/question_option'

lib/podio/models/promotion_group.rb

@@ -4,7 +4,6 @@ class Podio::PromotionGroup < ActivePodio::Base
   property :name, :string
   property :description, :string
   property :status, :string
-  property :member_ids, :array
 
   alias_method :id, :promotion_group_id
 

lib/podio/models/promotion_group_member.rb

@@ -0,0 +1,32 @@
+class Podio::PromotionGroupMember < ActivePodio::Base
+
+  property :promotion_group_id, :integer
+  property :member_id, :integer
+
+  alias_method :id, :promotion_group_id
+
+  class << self
+
+    def create(attributes)
+      member Podio.connection.post { |req| 
+        req.url("/promotion_group/#{attributes[:promotion_group_id]}/add")
+        req.body = attributes
+      }.body
+    end
+
+    def find_all(promotion_group_id, options = {})
+      Podio.connection.get { |req|
+        req.url("/promotion_group/#{promotion_group_id}/members", options)
+      }.body
+    end
+
+    def add_members(promotion_group_id, attributes)
+      Podio.connection.post { |req| 
+        req.url "/promotion_group/#{promotion_group_id}/members/add"
+        req.body = attributes
+      }.status
+    end
+
+  end
+
+end