class PaperTrail::AttributeSerializers::ObjectChangesAttribute
Serialize or deserialize the `version.object_changes` column.
Public Class Methods
new(item_class)
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# File lib/mongo_trails/attribute_serializers/object_changes_attribute.rb, line 9 def initialize(item_class) @item_class = item_class end
Public Instance Methods
deserialize(changes)
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# File lib/mongo_trails/attribute_serializers/object_changes_attribute.rb, line 17 def deserialize(changes) alter(changes, :deserialize) end
serialize(changes)
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# File lib/mongo_trails/attribute_serializers/object_changes_attribute.rb, line 13 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/mongo_trails/attribute_serializers/object_changes_attribute.rb, line 25 def alter(changes, serialization_method) # Don't serialize before values before inserting into columns of type # `JSON` on `PostgreSQL` databases. return changes if object_changes_col_is_json? serializer = CastAttributeSerializer.new(@item_class) changes.clone.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 end
object_changes_col_is_json?()
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# File lib/mongo_trails/attribute_serializers/object_changes_attribute.rb, line 39 def object_changes_col_is_json? @item_class.paper_trail.version_class.object_changes_col_is_json? end