diff options
Diffstat (limited to 'activerecord/lib/active_record/support/class_attribute_accessors.rb')
-rw-r--r-- | activerecord/lib/active_record/support/class_attribute_accessors.rb | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/support/class_attribute_accessors.rb b/activerecord/lib/active_record/support/class_attribute_accessors.rb new file mode 100644 index 0000000000..0e269165a6 --- /dev/null +++ b/activerecord/lib/active_record/support/class_attribute_accessors.rb @@ -0,0 +1,43 @@ +# attr_* style accessors for class-variables that can accessed both on an instance and class level. +class Class #:nodoc: + def cattr_reader(*syms) + syms.each do |sym| + class_eval <<-EOS + if ! defined? @@#{sym.id2name} + @@#{sym.id2name} = nil + end + + def self.#{sym.id2name} + @@#{sym} + end + + def #{sym.id2name} + self.class.#{sym.id2name} + end + EOS + end + end + + def cattr_writer(*syms) + syms.each do |sym| + class_eval <<-EOS + if ! defined? @@#{sym.id2name} + @@#{sym.id2name} = nil + end + + def self.#{sym.id2name}=(obj) + @@#{sym.id2name} = obj + end + + def #{sym.id2name}=(obj) + self.class.#{sym.id2name}=(obj) + end + EOS + end + end + + def cattr_accessor(*syms) + cattr_reader(*syms) + cattr_writer(*syms) + end +end
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