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Contents
module Tdc
module ExtendedAttributes
#
# Know how on interpret extended attributes.
#
# Note: extended attribute keys are expected to be strings rather than symbols.
#
class DefaultInterpreter < Tdc::ExtendedAttributes::InterpreterBase
def interpret(instance_definition)
extended_attribute_definitions = keep_extended_attributes(instance_definition)
extended_attribute_definitions.each do |extended_attribute_key, extended_attribute_value|
# Remove the extended attribute.
instance_definition.delete(extended_attribute_key)
# Add the extended attribute back as a standard attribute.
instance_definition[convert_to_standard_attribute(extended_attribute_key)] =
extended_attribute_context.instance_eval(extended_attribute_value)
end
end
concerning :HookMethods do
def extended_attribute_context
Time.zone
end
end
private
EXTENDED_ATTRIBUTE_SUFFIX = "_xa"
def convert_to_standard_attribute(extended_attribute_key)
extended_attribute_key.delete_suffix(EXTENDED_ATTRIBUTE_SUFFIX)
end
def extended_attribute?(extended_attribute_key)
extended_attribute_key.end_with?(EXTENDED_ATTRIBUTE_SUFFIX)
end
def keep_extended_attributes(instance_definition)
instance_definition.select do |extended_attribute_key, _|
extended_attribute?(extended_attribute_key)
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems