Merge pull request joelmoss#3 from pathable/friendly-strings

friendly name support via to_s

lib/bitmask_attributes/value_proxy.rb

@@ -1,18 +1,18 @@
 module BitmaskAttributes
   class ValueProxy < Array
-      
+
     def initialize(record, attribute, &extension)
       @record = record
       @attribute = attribute
       find_mapping
       instance_eval(&extension) if extension
       super(extract_values)
     end
-    
+
     # =========================
     # = OVERRIDE TO SERIALIZE =
     # =========================
-    
+
     alias_method :orig_replace, :replace
     %w(push << delete replace reject! select!).each do |override|
       class_eval(<<-EOEVAL)
@@ -23,13 +23,17 @@ def #{override}(*args)
         end
       EOEVAL
     end
-    
+
     def to_i
       inject(0) { |memo, value| memo | @mapping[value] }
     end
-
+
+    def to_s
+      join(', ')
+    end
+
     private
-    
+
       def validate!
         each do |value|
           if @mapping.key? value
@@ -39,7 +43,7 @@ def validate!
           end
         end
       end
-    
+
       def symbolize!
         orig_replace(map(&:to_sym))
       end
@@ -50,25 +54,25 @@ def updated!
         uniq!
         serialize!
       end
-    
+
       def serialize!
         @record.send(:write_attribute, @attribute, to_i)
       end
-  
+
       def extract_values
         stored = [@record.send(:read_attribute, @attribute) || 0, 0].max
         @mapping.inject([]) do |values, (value, bitmask)|
           values.tap do
             values << value.to_sym if (stored & bitmask > 0)
           end
-        end        
+        end
       end
-    
+
       def find_mapping
         unless (@mapping = @record.class.bitmasks[@attribute])
           raise ArgumentError, "Could not find mapping for bitmask attribute :#{@attribute}"
         end
       end
-      
+
   end
 end

test/bitmask_attributes_test.rb

@@ -282,6 +282,16 @@ def self.context_with_classes(label,campaign_class,company_class)
         assert_equal [], @campaign_class.with_exact_allow_zero(:none, :one)
       end
 
+      should 'return friendly value with to_s only' do
+        singular = @campaign_class.new(:medium => :web).medium
+        plural = @campaign_class.new(:medium => [:web, :print]).medium
+
+        assert_equal singular, [:web]
+        assert_equal plural, [:web, :print]
+        assert_equal singular.to_s, 'web'
+        assert_equal plural.to_s, 'web, print'
+      end
+
 
       private