diff --git a/lib/acts_as_virtual_field.rb b/lib/acts_as_virtual_field.rb
index 54735d4..a917e6e 100644
--- a/lib/acts_as_virtual_field.rb
+++ b/lib/acts_as_virtual_field.rb
@@ -1,5 +1,5 @@
 require "acts_as_virtual_field/version"
-
-module ActsAsVirtualField
-  require 'acts_as_virtual_field/virtual_field'
-end
+require 'acts_as_virtual_field/virtual_field'
+require "acts_as_virtual_field/formtastic/virtual_field_type_input"
+require "acts_as_virtual_field/formtastic/virtual_input"
+require "acts_as_virtual_field/active_record/acts/virtual_field"
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/active_record/acts/virtual_field.rb b/lib/acts_as_virtual_field/active_record/acts/virtual_field.rb
index 0b858a1..e70b30c 100644
--- a/lib/acts_as_virtual_field/active_record/acts/virtual_field.rb
+++ b/lib/acts_as_virtual_field/active_record/acts/virtual_field.rb
@@ -1,16 +1,17 @@
 module ActiveRecord
   module Acts #:nodoc:
     module VirtualField #:nodoc:
-      def acts_as_virtual_field(*args)
+      
+      def acts_as_virtual_field_for(column = :value, *args)
         options = args.extract_options!
-        cattr_accessor :virtual_field_column, :virtual_field_association
-        self.virtual_field_association      = options[:class]   || 'VirtualField'
-        self.virtual_field_column           = options[:column]  || :value
+        cattr_accessor :virtual_field_column, :virtual_field_association, :virtual_field_foreign_key
+        self.virtual_field_association      = options[:class_name]   || 'VirtualField'
+        self.virtual_field_column           = column
+        self.virtual_field_foreign_key      = options[:foreign_key]  || 'virtual_field_id'
         
         belongs_to :virtual_field, 
           :class_name => self.virtual_field_association.to_s,
-          :foreign_key => 'virtual_field_id'
-          :dependent => :delete_all
+          :foreign_key => self.virtual_field_foreign_key.to_s
         
         include InstanceMethods
       end
@@ -26,9 +27,12 @@ def formtastic_options
           }
           opts[:collection] = self.virtual_field.field_meta.split(/\r?\n/) if klass.collection?
           opts[:input_html] = klass.html_options if klass.has_html_options?
+          opts
         end
       end
       
     end
   end
-end
\ No newline at end of file
+end
+
+ActiveRecord::Base.extend ::ActiveRecord::Acts::VirtualField
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/fields/base.rb b/lib/acts_as_virtual_field/fields/base.rb
index 6f77c15..1e32b37 100644
--- a/lib/acts_as_virtual_field/fields/base.rb
+++ b/lib/acts_as_virtual_field/fields/base.rb
@@ -4,11 +4,11 @@ class Base
       class << self
                         
         def view_as
-          self::VIEW_AS || :string
+          self::VIEW_AS rescue :string
         end
       
         def has_html_options?
-          self::HTML_OPTIONS || false
+          self::HTML_OPTIONS rescue false
         end
       
         def html_options
@@ -16,7 +16,7 @@ def html_options
         end
         
         def label
-          self::LABEL || ''
+          self::LABEL rescue ''
         end
         
         def collection?
diff --git a/lib/acts_as_virtual_field/formtastic/virtual_field_type_input.rb b/lib/acts_as_virtual_field/formtastic/virtual_field_type_input.rb
new file mode 100644
index 0000000..b89fbd6
--- /dev/null
+++ b/lib/acts_as_virtual_field/formtastic/virtual_field_type_input.rb
@@ -0,0 +1,9 @@
+module Formtastic
+  module Inputs
+    class VirtualFieldTypeInput < Formtastic::Inputs::SelectInput
+      def collection_from_options
+        ::ActsAsVirtualField::VirtualField.types
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/formtastic/virtual_input.rb b/lib/acts_as_virtual_field/formtastic/virtual_input.rb
new file mode 100644
index 0000000..3b630df
--- /dev/null
+++ b/lib/acts_as_virtual_field/formtastic/virtual_input.rb
@@ -0,0 +1,10 @@
+module Formtastic
+  module Helpers
+    module InputHelper
+      def virtual_input(method, options = {})
+        base_options = @object.formtastic_options
+        input(method, options.merge(base_options))
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/validations.rb b/lib/acts_as_virtual_field/validations.rb
new file mode 100644
index 0000000..f9350e2
--- /dev/null
+++ b/lib/acts_as_virtual_field/validations.rb
@@ -0,0 +1,7 @@
+module Fields
+  module Validations
+    autoload :Required,     'fields/validations/required'
+    autoload :Formated,     'fields/validations/formated'
+    autoload :Conditioned,  'fields/validations/conditioned'
+  end
+end
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/validations/formated.rb b/lib/acts_as_virtual_field/validations/formated.rb
new file mode 100644
index 0000000..60845b1
--- /dev/null
+++ b/lib/acts_as_virtual_field/validations/formated.rb
@@ -0,0 +1,30 @@
+module Fields
+  module Validations
+    module Formated
+
+      def validates_field_value_format_of(*attr_names)
+        validates_with FieldsFormatValidator, _merge_attributes(attr_names)
+      end
+
+      class FieldsFormatValidator < ActiveModel::EachValidator
+        def validate_each(record, attribute, value)
+          normal_value = Yajl::Parser.parse(value || '')
+          unless normal_value.empty?
+            klass = "::Fields::#{record.field_type}".constantize
+            begin
+              args = case record.field_type
+              when "SingleList", "MultipleList"
+                [record.field_meta, value]
+              else
+                [normal_value]
+              end
+              klass.new(*args)
+            rescue
+              record.errors[:base] << (options[:message] || "has broken format (must be #{record.field_type})")
+            end
+          end
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/validations/required.rb b/lib/acts_as_virtual_field/validations/required.rb
new file mode 100644
index 0000000..9955636
--- /dev/null
+++ b/lib/acts_as_virtual_field/validations/required.rb
@@ -0,0 +1,19 @@
+module Fields
+  module Validations
+    module Required
+
+      def validates_field_value_presence_of(*attr_names)
+        validates_with FieldsRequiredValidator, _merge_attributes(attr_names)
+      end
+
+      class FieldsRequiredValidator < ActiveModel::EachValidator
+        def validate_each(record, attribute, value)
+          normal_value = Yajl::Parser.parse(value || '')
+          if record.required? && normal_value.empty?
+            record.errors[:base] << (options[:message] || "is required")
+          end
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/acts_as_virtual_field/virtual_field.rb b/lib/acts_as_virtual_field/virtual_field.rb
index abb7246..0a17e8f 100644
--- a/lib/acts_as_virtual_field/virtual_field.rb
+++ b/lib/acts_as_virtual_field/virtual_field.rb
@@ -22,7 +22,7 @@ def excludes
 
     def types
       (self.constants - self.excludes).map do |submodule|
-        [submodule.to_s, self.const_get(submodule)::LABEL.to_s]
+        [self.const_get(submodule)::LABEL.to_s, submodule.to_s]
       end
     end