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app/services/join_request.rb

@@ -0,0 +1,19 @@
+class JoinRequest
+  attr_reader :user, :list
+
+  def initialize(user: nil, list: nil)
+    @user, @list = user, list
+  end
+
+  def user_id
+    user.id
+  end
+
+  def user_facebook_id
+    user.uid
+  end
+
+  def list_id
+    list.id
+  end
+end