fixing issue when using accessible_by with nil can conditions - closes #66

CHANGELOG.rdoc

@@ -1,3 +1,7 @@
+* Fix issue when using accessible_by with nil can conditions (thanks jrallison) - see issue #66
+
+* Pluralize table name for belongs_to associations in can conditions hash (thanks logandk) - see issue #62
+
 * Support has_many association or arrays in can conditions hash
 
 * Adding joins clause to accessible_by when conditions are across associations

lib/cancan/can_definition.rb

@@ -8,7 +8,7 @@ module CanCan
       @base_behavior = base_behavior
       @actions = [action].flatten
       @subjects = [subject].flatten
-      @conditions = conditions
+      @conditions = conditions || {}
       @block = block
     end
   

spec/cancan/can_definition_spec.rb

@@ -36,4 +36,9 @@ describe CanCan::CanDefinition do
     @conditions[:test] = 1
     @can.conditions(:tableize => true).should == { :foos => { :bar => 1}, :test => 1 }
   end
+  
+  it "should return no association joins if conditions is nil" do
+    can = CanCan::CanDefinition.new(true, :read, Integer, nil, nil)
+    can.association_joins.should be_nil
+  end
 end