support has_many association or arrays in can conditions hash

CHANGELOG.rdoc

@@ -1,3 +1,5 @@
+* Support has_many association or arrays in can conditions hash
+
 * Adding joins clause to accessible_by when conditions are across associations
 
 1.1.1 (April 17, 2010)

lib/cancan/can_definition.rb

@@ -65,7 +65,11 @@ module CanCan
       conditions.all? do |name, value|
         attribute = subject.send(name)
         if value.kind_of?(Hash)
+          if attribute.kind_of? Array
+            attribute.any? { |element| matches_conditions? element, value }
+          else
             matches_conditions? attribute, value
+          end
         elsif value.kind_of?(Array) || value.kind_of?(Range)
           value.include? attribute
         else

spec/cancan/ability_spec.rb

@@ -168,6 +168,12 @@ describe CanCan::Ability do
     @ability.can?(:read, ["test1", "foo"]).should be_true
   end
   
+  it "should allow nested hash of arrays and match any element" do
+    @ability.can :read, Array, :first => { :to_i => 3 }
+    @ability.can?(:read, [[1, 2, 3]]).should be_true
+    @ability.can?(:read, [[4, 5, 6]]).should be_false
+  end
+  
   it "should return conditions for a given ability" do
     @ability.can :read, Array, :first => 1, :last => 3
     @ability.conditions(:show, Array).should == {:first => 1, :last => 3}