/usr/lib/ruby/vendor_ruby/active_model/serialization.rb is in ruby-activemodel-3.2 3.2.6-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 | require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/hash/slice'
require 'active_support/core_ext/array/wrap'
module ActiveModel
# == Active Model Serialization
#
# Provides a basic serialization to a serializable_hash for your object.
#
# A minimal implementation could be:
#
# class Person
#
# include ActiveModel::Serialization
#
# attr_accessor :name
#
# def attributes
# {'name' => name}
# end
#
# end
#
# Which would provide you with:
#
# person = Person.new
# person.serializable_hash # => {"name"=>nil}
# person.name = "Bob"
# person.serializable_hash # => {"name"=>"Bob"}
#
# You need to declare some sort of attributes hash which contains the attributes
# you want to serialize and their current value.
#
# Most of the time though, you will want to include the JSON or XML
# serializations. Both of these modules automatically include the
# ActiveModel::Serialization module, so there is no need to explicitly
# include it.
#
# So a minimal implementation including XML and JSON would be:
#
# class Person
#
# include ActiveModel::Serializers::JSON
# include ActiveModel::Serializers::Xml
#
# attr_accessor :name
#
# def attributes
# {'name' => name}
# end
#
# end
#
# Which would provide you with:
#
# person = Person.new
# person.serializable_hash # => {"name"=>nil}
# person.as_json # => {"name"=>nil}
# person.to_json # => "{\"name\":null}"
# person.to_xml # => "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<serial-person...
#
# person.name = "Bob"
# person.serializable_hash # => {"name"=>"Bob"}
# person.as_json # => {"name"=>"Bob"}
# person.to_json # => "{\"name\":\"Bob\"}"
# person.to_xml # => "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<serial-person...
#
# Valid options are <tt>:only</tt>, <tt>:except</tt> and <tt>:methods</tt> .
module Serialization
def serializable_hash(options = nil)
options ||= {}
attribute_names = attributes.keys.sort
if only = options[:only]
attribute_names &= Array.wrap(only).map(&:to_s)
elsif except = options[:except]
attribute_names -= Array.wrap(except).map(&:to_s)
end
hash = {}
attribute_names.each { |n| hash[n] = read_attribute_for_serialization(n) }
method_names = Array.wrap(options[:methods]).select { |n| respond_to?(n) }
method_names.each { |n| hash[n] = send(n) }
serializable_add_includes(options) do |association, records, opts|
hash[association] = if records.is_a?(Enumerable)
records.map { |a| a.serializable_hash(opts) }
else
records.serializable_hash(opts)
end
end
hash
end
private
# Hook method defining how an attribute value should be retrieved for
# serialization. By default this is assumed to be an instance named after
# the attribute. Override this method in subclasses should you need to
# retrieve the value for a given attribute differently:
#
# class MyClass
# include ActiveModel::Validations
#
# def initialize(data = {})
# @data = data
# end
#
# def read_attribute_for_serialization(key)
# @data[key]
# end
# end
#
alias :read_attribute_for_serialization :send
# Add associations specified via the <tt>:include</tt> option.
#
# Expects a block that takes as arguments:
# +association+ - name of the association
# +records+ - the association record(s) to be serialized
# +opts+ - options for the association records
def serializable_add_includes(options = {}) #:nodoc:
return unless include = options[:include]
unless include.is_a?(Hash)
include = Hash[Array.wrap(include).map { |n| n.is_a?(Hash) ? n.to_a.first : [n, {}] }]
end
include.each do |association, opts|
if records = send(association)
yield association, records, opts
end
end
end
end
end
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