class PaperTrail::AttributeSerializers::ObjectChangesAttribute
Serialize or deserialize the ‘version.object_changes` column.
Public Class Methods
new(item_class)
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# File lib/paper_trail/attribute_serializers/object_changes_attribute.rb, line 9 def initialize(item_class) @item_class = item_class # ActiveRecord since 7.0 has a built-in encryption mechanism @encrypted_attributes = if PaperTrail.active_record_gte_7_0? @item_class.encrypted_attributes&.map(&:to_s) end end
Public Instance Methods
deserialize(changes)
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# File lib/paper_trail/attribute_serializers/object_changes_attribute.rb, line 23 def deserialize(changes) alter(changes, :deserialize) end
serialize(changes)
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# File lib/paper_trail/attribute_serializers/object_changes_attribute.rb, line 19 def serialize(changes) alter(changes, :serialize) end
Private Instance Methods
alter(changes, serialization_method)
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Modifies ‘changes` in place. TODO: Return a new hash instead.
# File lib/paper_trail/attribute_serializers/object_changes_attribute.rb, line 31 def alter(changes, serialization_method) # Don't serialize non-encrypted before values before inserting into columns of type # `JSON` on `PostgreSQL` databases. changes_to_serialize = object_changes_col_is_json? ? changes.slice(*@encrypted_attributes) : changes.clone return changes if changes_to_serialize.blank? serializer = CastAttributeSerializer.new(@item_class) changes_to_serialize.each do |key, change| # `change` is an Array with two elements, representing before and after. changes[key] = Array(change).map do |value| serializer.send(serialization_method, key, value) end end changes end
object_changes_col_is_json?()
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# File lib/paper_trail/attribute_serializers/object_changes_attribute.rb, line 49 def object_changes_col_is_json? @item_class.paper_trail.version_class.object_changes_col_is_json? end