Class: SimpleEnum::Persistence::Hasher

Inherits:
Hash
  • Object
show all
Defined in:
lib/simple_enum/persistence/hasher.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options) ⇒ Hasher

Returns a new instance of Hasher.



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
 
# File 'lib/simple_enum/persistence/hasher.rb', line 6

def initialize options
  @enum_klass = options[0]
  options = options[1] || Hash.new
  @enum_key = options[:key] || :name
  @enum_value = options[:value] || :id

  unless enum_klass.method_defined? :update_enum_hashers
    enum_klass.instance_eval do
      def enum_hashers
        @enum_hashers ||= []
      end

      def update_enum_hashers
        records = all.to_a
        enum_hashers.each do |hasher|
          hasher.enum_replace records
        end
      end
    end

    enum_klass.class_eval do
      def update_enum_hashers
        self.class.update_enum_hashers
      end

      after_commit :update_enum_hashers
    end
  end

  enum_klass.enum_hashers.push self
  enum_replace enum_klass.all
end

Instance Attribute Details

#enum_key ⇒ Object (readonly)

Returns the value of attribute enum_key.



4
5
6
 
# File 'lib/simple_enum/persistence/hasher.rb', line 4

def enum_key
  @enum_key
end

#enum_klass ⇒ Object (readonly)

Returns the value of attribute enum_klass.



4
5
6
 
# File 'lib/simple_enum/persistence/hasher.rb', line 4

def enum_klass
  @enum_klass
end

#enum_value ⇒ Object (readonly)

Returns the value of attribute enum_value.



4
5
6
 
# File 'lib/simple_enum/persistence/hasher.rb', line 4

def enum_value
  @enum_value
end

Instance Method Details

#enum_replace(records) ⇒ Object 



39
40
41
42
43
44
45
 
# File 'lib/simple_enum/persistence/hasher.rb', line 39

def enum_replace records
  hash = Hash.new
  records.each do |record|
    hash[record.send(enum_key)] = record.send(enum_value)
  end
  replace hash
end

#freeze ⇒ Object

Do nothing when freeze, cause we have to motify the hash later



48
49
50
 
# File 'lib/simple_enum/persistence/hasher.rb', line 48

def freeze
  self
end