debug

+class AddVarStatusTo<%=@model_name.camelize%> < ActiveRecord::Migration
+  def change
+    add_column :<%=@model_name.pluralize.underscore%>, :var_status, :string, default: 'pending'
+  end
+end

+require 'rails/generators'
+
+class VarStatusGenerator < Rails::Generators::NamedBase
+  source_root File.expand_path('../templates', __FILE__)
+  desc "This generator generates layout file with navigation."
+
+  def generate_status
+    d = Time.now.strftime('%Y%m%d%H%M%S')
+    @model_name = name
+    template "var_status.rb",
+    				 "db/migrate/#{d}_add_var_status_to_#{name.pluralize.underscore}.rb"
+  end
+end

@@ -5,19 +5,18 @@ require 'paypal-sdk-rest'
 module Var
   # TODO: add paypal
   # @@valid_services = [:conekta, :paypal]
-  @@valid_services = [:conekta]
+  VALID_SERVICES = [:conekta]
 
   def self.valid_services
-    @@valid_services
+    VALID_SERVICES
   end
 
   def self.create_charge(service, object, options = {})
-    if(!@@valid_services.include?(service))
-      return { error_message: 'Service is not supported' }
-    end
-    if(!object.respond_to?(:charge_with))
-      return { error_message: "#{object.class.to_s} doesn't support charges"}
-    end
+    binding.pry
+    return { error_message: 'Service is not supported' } 
+      unless VALID_SERVICES.include? service
+    return { error_message: "#{object.class.to_s} doesn't support charges"}
+      unless object.respond_to?(:charge_with)
     object.charge_with(service, options)
   end
 end
@@ -48,6 +47,7 @@ module ActsAsChargeable
     end
 
     def charge_with_conekta(options)
+      binding.pry
       if(!options.include? :card_token)
         error_message = "Conekta needs a card token sent as a third paramater"
         return { error_message: error_message}
@@ -71,6 +71,7 @@ module ActsAsChargeable
           }
         })
       rescue => exception
+        self.update_columns(var_status: 'failed')
         return { error_message: exception.message }
       end
     end