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author | Jeremy Kemper <jeremy@bitsweat.net> | 2009-10-19 12:33:36 -0700 |
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committer | Jeremy Kemper <jeremy@bitsweat.net> | 2009-10-19 12:33:36 -0700 |
commit | a49c3b03650b3193cc9440a3b219ab7f19326297 (patch) | |
tree | dd68d637a074bc08d1328d780aeb092b2a4c8874 /activerecord/lib/active_record/attributes/aliasing.rb | |
parent | 028911ad00e7f7733064a80393a1548401bba7af (diff) | |
parent | 1ac5cf478825391071d34ec3d7f294fe28c0fceb (diff) | |
download | rails-a49c3b03650b3193cc9440a3b219ab7f19326297.tar.gz rails-a49c3b03650b3193cc9440a3b219ab7f19326297.tar.bz2 rails-a49c3b03650b3193cc9440a3b219ab7f19326297.zip |
Merge branch 'master' of github.com:rails/rails
Diffstat (limited to 'activerecord/lib/active_record/attributes/aliasing.rb')
-rw-r--r-- | activerecord/lib/active_record/attributes/aliasing.rb | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attributes/aliasing.rb b/activerecord/lib/active_record/attributes/aliasing.rb new file mode 100644 index 0000000000..db77739d1f --- /dev/null +++ b/activerecord/lib/active_record/attributes/aliasing.rb @@ -0,0 +1,42 @@ +module ActiveRecord + module Attributes + module Aliasing + # Allows access to keys using aliased names. + # + # Example: + # class Attributes < Hash + # include Aliasing + # end + # + # attributes = Attributes.new + # attributes.aliases['id'] = 'fancy_primary_key' + # attributes['fancy_primary_key'] = 2020 + # + # attributes['id'] + # => 2020 + # + # Additionally, symbols are always aliases of strings: + # attributes[:fancy_primary_key] + # => 2020 + # + def [](key) + super(unalias(key)) + end + + def []=(key, value) + super(unalias(key), value) + end + + def aliases + @aliases ||= {} + end + + def unalias(key) + key = key.to_s + aliases[key] || key + end + + end + end +end + |