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require 'active_support/json'
require 'active_support/core_ext/class/attribute_accessors'
require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/hash/slice'
module ActiveModel
module Serializers
module JSON
extend ActiveSupport::Concern
include ActiveModel::Attributes
included do
cattr_accessor :include_root_in_json, :instance_writer => false
end
def encode_json(encoder)
options = encoder.options || {}
hash = if options[:only]
only = Array.wrap(options[:only]).map { |attr| attr.to_s }
attributes.slice(*only)
elsif options[:except]
except = Array.wrap(options[:except]).map { |attr| attr.to_s }
attributes.except(*except)
else
attributes
end
hash = { self.class.model_name.element => hash } if include_root_in_json
ActiveSupport::JSON.encode(hash)
end
def as_json(options = nil)
self
end
end
end
end
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