[fixes #25] dont crash for database types without casting rules

Author: kratob

lib/active_type/type_caster.rb

@@ -71,7 +71,12 @@ def initialize(type, connection)
           # supports it.
           if !type.nil? && connection.respond_to?(:native_database_types)
             native_type = connection.native_database_types[type.to_sym]
-            type = native_type.fetch(:name) unless native_type.nil?
+            if native_type && native_type[:name]
+              type = native_type[:name]
+            else
+              # unknown type, we just dont cast
+              type = nil
+            end
           end
           @active_record_type = connection.lookup_cast_type(type)
         end

spec/active_type/object_spec.rb

@@ -79,6 +79,10 @@ class ObjectWithBelongsTo < Object
 
   end
 
+  class ObjectWithUnsupportedTypes < Object
+    attribute :virtual_array, :array
+    attribute :virtual_hash, :hash
+  end
 
 end
 
@@ -102,6 +106,13 @@ class ObjectWithBelongsTo < Object
     it_should_behave_like 'ActiveRecord-like accessors', { :virtual_string => "string", :virtual_integer => 100, :virtual_time => Time.now, :virtual_date => Date.today, :virtual_boolean => true }
   end
 
+  describe 'unsupported types' do
+    subject { ObjectSpec::ObjectWithUnsupportedTypes.new }
+
+    it_should_behave_like 'ActiveRecord-like mass assignment', { :virtual_hash => {'foo' => 'bar'}, :virtual_array => ['foo', 'bar'] }
+    it_should_behave_like 'ActiveRecord-like accessors', { :virtual_hash => {'foo' => 'bar'}, :virtual_array => ['foo', 'bar'] }
+  end
+
   describe 'overridable attributes' do
     subject { ObjectSpec::ObjectWithOverrides.new }