Extract private method: version_reification_class
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@ -31,7 +31,6 @@ module PaperTrail
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# table inheritance and the `item_type` will be the base class, not the
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# actual subclass. If `type` is present but empty, the class is the base
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# class.
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if options[:dup] != true && version.item
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model = version.item
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# Look for attributes that exist in the model and not in this
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@ -40,11 +39,7 @@ module PaperTrail
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(model.attribute_names - attrs.keys).each { |k| attrs[k] = nil }
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end
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else
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inheritance_column_name = version.item_type.constantize.inheritance_column
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class_name = attrs[inheritance_column_name].blank? ?
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version.item_type :
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attrs[inheritance_column_name]
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klass = class_name.constantize
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klass = version_reification_class(version, attrs)
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# The `dup` option always returns a new object, otherwise we should
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# attempt to look for the item outside of default scope(s).
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if options[:dup] || (item_found = klass.unscoped.find_by_id(version.item_id)).nil?
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@ -259,6 +254,18 @@ module PaperTrail
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end
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end
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# Given a `version`, return the class to reify. This method supports
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# Single Table Inheritance (STI). For example, given a `version` whose
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# `item_type` is "Banana", where `Banana` is an STI model in the `fruits`
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# table, this method would return the constant `Fruit`.
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def version_reification_class(version, attrs)
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inheritance_column_name = version.item_type.constantize.inheritance_column
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class_name = attrs[inheritance_column_name].blank? ?
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version.item_type :
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attrs[inheritance_column_name]
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class_name.constantize
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end
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# Given a SQL fragment that identifies the IDs of version records,
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# returns a `Hash` mapping those IDs to `Version`s.
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#
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