fix: old UnproccesableError class does not work across alias

abak-press#34

Gemfile

@@ -8,6 +8,7 @@ if RUBY_VERSION < '2'
   gem 'public_suffix', '< 1.5.0'
   gem 'pg', '< 0.19.0'
   gem "pry-debugger", ">= 0.2.3"
+  gem 'nokogiri', '< 1.7.0'
 else
   gem "test-unit"
   gem "pry-byebug"

app/docs/swagger/v1/models/apress/api/unproccesable_error.rb

@@ -1 +1,14 @@
-Swagger::V1::Models::Apress::Api::UnproccesableError = Swagger::V1::Models::Apress::Api::UnprocessableError
+module Swagger
+  module V1
+    module Models
+      module Apress
+        module Api
+          # Deprecated: Please use `UnprocessableError` instead
+          class UnproccesableError < ::Apress::Api::Swagger::Schema
+            include UnprocessableError::Schema
+          end
+        end
+      end
+    end
+  end
+end

app/docs/swagger/v1/models/apress/api/unprocessable_error.rb

@@ -4,19 +4,27 @@ module Models
       module Apress
         module Api
           class UnprocessableError < ::Apress::Api::Swagger::Schema
-            swagger_schema name.to_sym do
-              key :required, :errors
+            module Schema
+              extend ActiveSupport::Concern
 
-              property :errors do
-                key :type, :array
-                items do
-                  key :type, :object
-                  property :error do
-                    key :type, :object
+              included do
+                swagger_schema name.to_sym do
+                  key :required, :errors
+
+                  property :errors do
+                    key :type, :array
+                    items do
+                      key :type, :object
+                      property :error do
+                        key :type, :object
+                      end
+                    end
                   end
                 end
               end
             end
+
+            include Schema
           end
         end
       end