Class: Class

Inherits:
Object
  • Object
show all
Defined in:
lib/coinage/core_ext/class.rb

Overview

Extends the class object with class and instance accessors for class attributes, just like the native attr* accessors for instance attributes.

class Person
  cattr_accessor :hair_colors
end

Person.hair_colors = [:brown, :black, :blonde, :red]

Instance Method Summary collapse

Instance Method Details

#cattr_accessor(*syms) ⇒ Object 



50
51
52
53
 
# File 'lib/coinage/core_ext/class.rb', line 50

def cattr_accessor(*syms)
  cattr_reader(*syms)
  cattr_writer(*syms)
end

#cattr_reader(*syms) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
 
# File 'lib/coinage/core_ext/class.rb', line 10

def cattr_reader(*syms)
  syms.flatten.each do |sym|
    next if sym.is_a?(Hash)
    class_eval("      unless defined? @@\#{sym}\n        @@\#{sym} = nil\n      end\n\n      def self.\#{sym}\n        @@\#{sym}\n      end\n\n      def \#{sym}\n        @@\#{sym}\n      end\n    EOS\n  end\nend\n", __FILE__, __LINE__)

#cattr_writer(*syms) ⇒ Object 



29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
 
# File 'lib/coinage/core_ext/class.rb', line 29

def cattr_writer(*syms)
  options = syms.extract_options!
  syms.flatten.each do |sym|
    class_eval("      unless defined? @@\#{sym}\n        @@\#{sym} = nil\n      end\n\n      def self.\#{sym}=(obj)\n        @@\#{sym} = obj\n      end\n\n      \#{\"\n      def \#{sym}=(obj)\n        @@\#{sym} = obj\n      end\n      \" unless options[:instance_writer] == false }\n    EOS\n  end\nend\n", __FILE__, __LINE__)