Module: Serializer::ClassMethods

Defined in:
lib/serializer.rb

Instance Method Summary collapse

Instance Method Details

#has_serialized(name, &block) ⇒ Object

Add serializer to a class.

Usage:

has_serialized :settings do |settings|
  settings.define :tw_share, default: true, type: :boolean
  settings.define :fb_share, default: true, type: :boolean
end



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
 
# File 'lib/serializer.rb', line 22

def has_serialized(name, &block)
  serialize name, Hash

  initializer = Serializer::Initializer.new
  block.call(initializer)

  initializer.each do |method, options|

    define_method "#{method}" do
      hash = send(name)
      result = hash[method.to_sym] if hash

      if hash.nil? or result.nil?
        send("#{name}=", {}) unless send(name)
        hash = send(name)

        result = options[:default]
        result = result.clone if result.duplicable?

        hash[method.to_sym] = result
      end

      return result
    end

    define_method "#{method}?" do
      hash = send(name)
      result = hash[method.to_sym] if hash

      if hash.nil? or result.nil?
        send("#{name}=", {}) unless send(name)
        hash = send(name)

        result = options[:default]
        result = result.clone if result.duplicable?

        hash[method.to_sym] = result
      end

      return result
    end

    define_method "#{method}=" do |value|
      original = send(name) || {}

      if options[:type] and value
        case options[:type].to_sym
        when :float   then value = value.to_f if value.respond_to? :to_f
        when :integer then value = value.to_i if value.respond_to? :to_i
        when :string  then value = value.to_str if value.respond_to? :to_str
        when :symbol  then value = value.to_sym if value.respond_to? :to_sym
        when :boolean then
          value = true  if value.eql? "true"
          value = false if value.eql? "false"
          value = !value.to_i.zero? if value.respond_to? :to_i
        end
      end

      modified = original.clone
      modified[method.to_sym] = value

      send("#{name}_will_change!") unless modified.eql?(original)
      send("#{name}=", modified)
    end

  end
end