class Seri::Serializer::ValueFetcher
Public Class Methods
fetch(attribute, object, serializer)
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# File lib/serializer/value_fetcher.rb, line 6 def self.fetch(attribute, object, serializer) new(attribute, object, serializer).fetch end
new(attribute, object, serializer)
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# File lib/serializer/value_fetcher.rb, line 12 def initialize(attribute, object, serializer) @attribute = attribute @values = [ StaticValue.new(attribute), SerializedValue.new(attribute, serializer), HashValue.new(attribute, object), SerializedValue.new(attribute, object) ] end
Public Instance Methods
fetch()
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# File lib/serializer/value_fetcher.rb, line 22 def fetch serializer = @attribute.serializer return value unless serializer if value.is_a?(Enumerable) && !value.is_a?(Hash) value.map { |item| serializer.new(item).to_h } else serializer.new(value).to_h end end
value()
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Fetches a value from an attribute by checking if there's a .. .. static value set, or a .. .. method defined in the serializer, or a .. .. method/attribute defined in the object or .. .. it raises an error
# File lib/serializer/value_fetcher.rb, line 39 def value @value ||= begin extracted_value = @values.detect(&:precondition?) if extracted_value.nil? raise SerializerError, "unknown attribute '#{@values[0].extraction_key}'" end extracted_value.value end end