diff options
Diffstat (limited to 'activemodel/lib/active_model/serialization.rb')
| -rw-r--r-- | activemodel/lib/active_model/serialization.rb | 46 |
1 files changed, 24 insertions, 22 deletions
diff --git a/activemodel/lib/active_model/serialization.rb b/activemodel/lib/active_model/serialization.rb index a4b58ab456..4403ef060b 100644 --- a/activemodel/lib/active_model/serialization.rb +++ b/activemodel/lib/active_model/serialization.rb @@ -1,7 +1,5 @@ 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 @@ -11,15 +9,13 @@ module ActiveModel # A minimal implementation could be: # # class Person - # # include ActiveModel::Serialization # # attr_accessor :name # # def attributes - # {'name' => name} + # {'name' => nil} # end - # # end # # Which would provide you with: @@ -29,27 +25,29 @@ module ActiveModel # 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. + # You need to declare an attributes hash which contains the attributes + # you want to serialize. Attributes must be strings, not symbols. + # When called, serializable hash will use + # instance methods that match the name of the attributes hash's keys. + # In order to override this behavior, take a look at the private + # method +read_attribute_for_serialization+. # # 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 + # <tt>ActiveModel::Serialization</tt> module, so there is no need to explicitly # include it. # - # So a minimal implementation including XML and JSON would be: + # 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} + # {'name' => nil} # end - # # end # # Which would provide you with: @@ -66,26 +64,30 @@ module ActiveModel # 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> . + # Valid options are <tt>:only</tt>, <tt>:except</tt>, <tt>:methods</tt> and <tt>include</tt>. + # The following are all valid examples: + # + # person.serializable_hash(:only => 'name') + # person.serializable_hash(:include => :address) + # person.serializable_hash(:include => { :address => { :only => 'city' }}) 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) + attribute_names &= Array(only).map(&:to_s) elsif except = options[:except] - attribute_names -= Array.wrap(except).map(&:to_s) + attribute_names -= Array(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) } + Array(options[:methods]).each { |m| hash[m.to_s] = send(m) if respond_to?(m) } serializable_add_includes(options) do |association, records, opts| - hash[association] = if records.is_a?(Enumerable) + hash[association.to_s] = if records.is_a?(Enumerable) records.map { |a| a.serializable_hash(opts) } else records.serializable_hash(opts) @@ -123,13 +125,13 @@ module ActiveModel # +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] + return unless includes = options[:include] - unless include.is_a?(Hash) - include = Hash[Array.wrap(include).map { |n| n.is_a?(Hash) ? n.to_a.first : [n, {}] }] + unless includes.is_a?(Hash) + includes = Hash[Array(includes).map { |n| n.is_a?(Hash) ? n.to_a.first : [n, {}] }] end - include.each do |association, opts| + includes.each do |association, opts| if records = send(association) yield association, records, opts end |