Added code to generate a property? method for properties casted as :boolean

Signed-off-by: Matt Aimonetti <mattaimonetti@gmail.com>

lib/couchrest/mixins/properties.rb

@@ -77,6 +77,9 @@ module CouchRest
             # Float instances don't get initialized with #new
             elsif ((property.init_method == 'new') && target == 'Float')
               cast_float(self[key])
+            # 'boolean' type is simply used to generate a property? accessor method
+            elsif ((property.init_method == 'new') && target == 'boolean')
+              self[key]
             else
               # Let people use :send as a Time parse arg
               klass = ::CouchRest.constantize(target)
@@ -128,6 +131,18 @@ module CouchRest
               end
             EOS
 
+            if property.type == 'boolean'
+              class_eval <<-EOS, __FILE__, __LINE__
+                def #{property.name}?
+                  if self['#{property.name}'].nil? || self['#{property.name}'] == false || self['#{property.name}'].to_s.downcase == 'false'
+                    false
+                  else
+                    true
+                  end
+                end
+              EOS
+            end
+
             if property.alias
               class_eval <<-EOS, __FILE__, __LINE__
                 alias #{property.alias.to_sym} #{property.name.to_sym}

spec/couchrest/more/property_spec.rb

@@ -161,7 +161,33 @@ describe "ExtendedDocument properties" do
       it "should work fine when a float is being passed" do
         RootBeerFloat.new(:price => 9.99).price.should == 9.99
       end
+    end
     
+    describe "casting to a boolean value" do
+      class RootBeerFloat < CouchRest::ExtendedDocument
+        use_database DB
+        property :tasty, :cast_as => :boolean
+      end
+
+      it "should add an accessor with a '?' for boolean attributes that returns true or false" do
+        RootBeerFloat.new(:tasty => true).tasty?.should == true
+        RootBeerFloat.new(:tasty => 'you bet').tasty?.should == true
+        RootBeerFloat.new(:tasty => 123).tasty?.should == true
+
+        RootBeerFloat.new(:tasty => false).tasty?.should == false
+        RootBeerFloat.new(:tasty => 'false').tasty?.should == false
+        RootBeerFloat.new(:tasty => 'FaLsE').tasty?.should == false
+        RootBeerFloat.new(:tasty => nil).tasty?.should == false
+      end
+
+      it "should return the real value when the default accessor is used" do
+        RootBeerFloat.new(:tasty => true).tasty.should == true
+        RootBeerFloat.new(:tasty => 'you bet').tasty.should == 'you bet'
+        RootBeerFloat.new(:tasty => 123).tasty.should == 123
+        RootBeerFloat.new(:tasty => 'false').tasty.should == 'false'
+        RootBeerFloat.new(:tasty => false).tasty.should == false
+        RootBeerFloat.new(:tasty => nil).tasty.should == nil
+      end
     end
 
   end