59 lines
1.8 KiB
Ruby
59 lines
1.8 KiB
Ruby
module ActiveRecord #:nodoc:
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module Serialization
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class Serializer #:nodoc:
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attr_reader :options
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def initialize(record, options = {})
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@record, @options = record, options.dup
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end
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# To replicate the behavior in ActiveRecord#attributes,
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# :except takes precedence over :only. If :only is not set
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# for a N level model but is set for the N+1 level models,
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# then because :except is set to a default value, the second
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# level model can have both :except and :only set. So if
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# :only is set, always delete :except.
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def serializable_attribute_names
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attribute_names = @record.attribute_names
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if options[:only]
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options.delete(:except)
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attribute_names = attribute_names & Array(options[:only]).collect { |n| n.to_s }
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else
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options[:except] = Array(options[:except]) | Array(@record.class.inheritance_column)
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attribute_names = attribute_names - options[:except].collect { |n| n.to_s }
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end
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attribute_names
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end
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def serializable_method_names
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Array(options[:methods]).inject([]) do |method_attributes, name|
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method_attributes << :name if @record.respond_to?(name.to_s)
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method_attributes
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end
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end
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def serializable_names
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serializable_attribute_names + serializable_method_names
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end
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def serializable_record
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returning(serializable_record = {}) do
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serializable_names.each { |name| serializable_record[name] = @record.send(name) }
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end
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end
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def serialize
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# overwrite to implement
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end
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def to_s(&block)
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serialize(&block)
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end
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end
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end
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end
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require 'active_record/serializers/xml_serializer'
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require 'active_record/serializers/json_serializer' |