ignore restriction value errors

lib/validates_timeliness.rb

@@ -18,6 +18,9 @@ module ValidatesTimeliness
   mattr_accessor :dummy_date_for_time_type
   @@dummy_date_for_time_type = [ 2000, 1, 1 ]
 
+  # Ignore errors when restriction options are evaluated
+  mattr_accessor :ignore_restriction_errors
+  @@ignore_restriction_errors = false
 end
 
 require 'validates_timeliness/conversion'

lib/validates_timeliness/validator.rb

@@ -39,9 +39,15 @@ module ValidatesTimeliness
       value = type_cast(value)
 
       (RESTRICTIONS.keys & options.keys).each do |restriction|
-        restriction_value = type_cast(evaluate_option_value(options[restriction], record))
-        unless value.send(RESTRICTIONS[restriction], restriction_value)
-          return record.errors.add(attr_name, restriction, :restriction => restriction_value)
+        begin
+          restriction_value = type_cast(evaluate_option_value(options[restriction], record))
+          unless value.send(RESTRICTIONS[restriction], restriction_value)
+            return record.errors.add(attr_name, restriction, :restriction => restriction_value)
+          end
+        rescue => e
+          unless ValidatesTimeliness.ignore_restriction_errors
+            record.errors[attr_name] = "Error occurred validating #{attr_name} for #{restriction.inspect} restriction:\n#{e.message}" 
+          end
         end
       end
     end

spec/validates_timeliness/validator_spec.rb

@@ -66,4 +66,28 @@ describe ValidatesTimeliness::Validator do
       end
     end
   end
+
+  describe "restriction value errors" do
+    let(:person) { Person.new(:birth_date => Date.today) }
+
+    before do
+      Person.validates_time :birth_date, :is_at => lambda { raise }
+    end
+
+    it "should be added when ignore_restriction_errors is false" do
+      ValidatesTimeliness.ignore_restriction_errors = false
+      person.valid?
+      person.errors[:birth_date].first.should match("Error occurred validating birth_date for :is_at restriction")
+    end
+
+    it "should not be added when ignore_restriction_errors is true" do
+      ValidatesTimeliness.ignore_restriction_errors = true
+      person.valid?
+      person.errors[:birth_date].should be_empty
+    end
+
+    after :all do
+      ValidatesTimeliness.ignore_restriction_errors = false
+    end
+  end
 end