Merge branch 'master' into 499-admin-wildcard-search

app/services/object_versions_parser.rb

@@ -0,0 +1,28 @@
+class ObjectVersionsParser
+  def initialize(version)
+    @version = version
+  end
+
+  def parse
+    model = @version.item_type.constantize
+    attributes = only_present_fields(model)
+    history_object = model.new(attributes)
+    attach_existing_fields(history_object) unless @version.event == 'destroy'
+
+    history_object
+  end
+
+  private
+
+  def attach_existing_fields(history_object)
+    @version.object_changes.to_h.each do |key, value|
+      method_name = "#{key}=".to_sym
+      history_object.public_send(method_name, value.last) if history_object.respond_to?(method_name)
+    end
+  end
+
+  def only_present_fields(model)
+    field_names = model.column_names
+    @version.object.to_h.select { |key, _value| field_names.include?(key) }
+  end
+end