Ability to pass in options to validators

lib/automagical_validations.rb

@@ -1,11 +1,21 @@
 module AutomagicalValidations
   def automagically_validate(*types_to_validate)
     return unless self.table_exists?
-    types_to_validate.map!{ |type| type.to_sym }
+
+    validation_settings = {}
+
+    if types_to_validate.first.is_a? Hash
+      validation_settings = types_to_validate.first
+      validation_settings.symbolize_keys!
+    else
+      types_to_validate.each do |type|
+        validation_settings[type.to_sym] = {}
+      end
+    end
 
     columns.each do |column|
       # Do not touch the columns not specified
-      next unless types_to_validate.include? column.type
+      next unless validation_settings[column.type]
 
       # Do not define validator on columns that have no limit information, even if asked to
       next unless column.limit
@@ -15,7 +25,7 @@ def automagically_validate(*types_to_validate)
         validator.is_a?(ActiveModel::Validations::LengthValidator) && validator.options[:maximum]
       end
 
-      validates_length_of column.name, :maximum => column.limit
+      validates_length_of column.name, validation_settings[column.type].merge({:maximum => column.limit})
     end
   end
 end

spec/automagical_validations_spec.rb

@@ -173,5 +173,26 @@
         end
       end
     end
+
+    context "passing options to validator" do
+      let(:validator_options){ {:message => 'Custom message'} }
+
+      before(:all) do
+        Post.rebuild_table do |t|
+          t.string  :title
+          t.text    :content
+        end
+
+        Post.automagically_validate :string => validator_options
+      end
+
+      it "should define validator" do
+        Post.should have(1).validators_on(:title)
+      end
+
+      it "should define options for validator" do
+        Post.validators_on(:title).first.options[:message].should eq validator_options[:message]
+      end
+    end
   end
 end