Merge branch 'replace_constants' into develop

15 files changed, 78 insertions, 38 deletions

diff --git a/app/models/ability.rb b/app/models/ability.rb
index d9ec74a..f4068ca 100644
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -70,7 +70,7 @@ class Ability
 
           # Dirty hack to disable PhoneNumberRange in the GUI
           #
-          if STRICT_INTERNAL_EXTENSION_HANDLING == false
+          if GsParameter.get('STRICT_INTERNAL_EXTENSION_HANDLING') == false
             cannot :manage, PhoneNumberRange
           end
         else
diff --git a/app/models/access_authorization.rb b/app/models/access_authorization.rb
index ef33115..878799a 100644
--- a/app/models/access_authorization.rb
+++ b/app/models/access_authorization.rb
@@ -18,7 +18,9 @@ class AccessAuthorization < ActiveRecord::Base
                       :allow_nil => true, :allow_blank => true,
                       :message => "must be numeric."
 
-  validates_length_of :pin, :minimum => MINIMUM_PIN_LENGTH, :maximum => MAXIMUM_PIN_LENGTH,
+  validates_length_of :pin, 
+                      :minimum => (GsParameter.get('MINIMUM_PIN_LENGTH').nil? ? 4 : GsParameter.get('MINIMUM_PIN_LENGTH')), 
+                      :maximum => (GsParameter.get('MAXIMUM_PIN_LENGTH').nil? ? 10 : GsParameter.get('MAXIMUM_PIN_LENGTH')),
                       :allow_nil => true, :allow_blank => true
 
   has_many :phone_numbers, :as => :phone_numberable, :dependent => :destroy
diff --git a/app/models/api/row.rb b/app/models/api/row.rb
index ac35516..e82a3e2 100644
--- a/app/models/api/row.rb
+++ b/app/models/api/row.rb
@@ -28,7 +28,7 @@ class Api::Row < ActiveRecord::Base
   end
 
   def create_a_new_gemeinschaft_user
-    tenant = Tenant.find(DEFAULT_API_TENANT_ID)
+    tenant = Tenant.find(GsParameter.get('DEFAULT_API_TENANT_ID'))
 
     # Find or create the user
     #
diff --git a/app/models/call_forward.rb b/app/models/call_forward.rb
index 0018cfb..8a8d1df 100644
--- a/app/models/call_forward.rb
+++ b/app/models/call_forward.rb
@@ -28,7 +28,7 @@ class CallForward < ActiveRecord::Base
   validates_numericality_of  :depth,
     :only_integer => true,
     :greater_than_or_equal_to  =>   1,
-    :less_than_or_equal_to     =>  MAX_CALL_FORWARD_DEPTH
+    :less_than_or_equal_to     =>  (GsParameter.get('MAX_CALL_FORWARD_DEPTH').nil? ? 0 : GsParameter.get('MAX_CALL_FORWARD_DEPTH'))
   
   before_validation {
     self.timeout = nil if self.call_forward_case_id != 3
diff --git a/app/models/conference.rb b/app/models/conference.rb
index 8be9f21..16b646c 100644
--- a/app/models/conference.rb
+++ b/app/models/conference.rb
@@ -15,7 +15,7 @@ class Conference < ActiveRecord::Base
   validates_presence_of  :max_members
   validates_numericality_of :max_members, :only_integer => true, 
                                           :greater_than => 0,
-                                          :less_than => (MAXIMUM_NUMBER_OF_PEOPLE_IN_A_CONFERENCE + 1),
+                                          :less_than => ((GsParameter.get('MAXIMUM_NUMBER_OF_PEOPLE_IN_A_CONFERENCE').nil? ? 10 : GsParameter.get('MAXIMUM_NUMBER_OF_PEOPLE_IN_A_CONFERENCE')) + 1),
                                           :allow_nil => false,
                                           :allow_blank => false
 
@@ -25,7 +25,7 @@ class Conference < ActiveRecord::Base
                                   :greater_than => 0,
                                   :allow_nil => true,
                                   :allow_blank => true
-  validates_length_of       :pin, :minimum => MINIMUM_PIN_LENGTH,
+  validates_length_of       :pin, :minimum => (GsParameter.get('MINIMUM_PIN_LENGTH').nil? ? 4 : GsParameter.get('MINIMUM_PIN_LENGTH')),
                                   :allow_nil => true,
                                   :allow_blank => true
   
diff --git a/app/models/conference_invitee.rb b/app/models/conference_invitee.rb
index 7de20de..d6e3bac 100644
--- a/app/models/conference_invitee.rb
+++ b/app/models/conference_invitee.rb
@@ -13,7 +13,7 @@ class ConferenceInvitee < ActiveRecord::Base
                                   :greater_than => 0,
                                   :allow_nil => true,
                                   :allow_blank => true
-  validates_length_of       :pin, :minimum => MINIMUM_PIN_LENGTH,
+  validates_length_of       :pin, :minimum => (GsParameter.get('MINIMUM_PIN_LENGTH').nil? ? 4 : GsParameter.get('MINIMUM_PIN_LENGTH')),
                                   :allow_nil => true,
                                   :allow_blank => true
                                   
diff --git a/app/models/fax_document.rb b/app/models/fax_document.rb
index 67bdea9..080bdaa 100644
--- a/app/models/fax_document.rb
+++ b/app/models/fax_document.rb
@@ -54,7 +54,7 @@ class FaxDocument < ActiveRecord::Base
   
   private
   def render_thumbnails
-    directory = "/tmp/GS-#{GEMEINSCHAFT_VERSION}/fax_thumbnails/#{self.id}"
+    directory = "/tmp/GS-#{GsParameter.get('GEMEINSCHAFT_VERSION')}/fax_thumbnails/#{self.id}"
     system('mkdir -p ' + directory)
     system("cd #{directory} && convert #{Rails.root.to_s}/public#{self.document.to_s}[0-100] -colorspace Gray PNG:'fax_page.png'")
     number_of_thumbnails = Dir["#{directory}/fax_page-*.png"].count
@@ -70,7 +70,7 @@ class FaxDocument < ActiveRecord::Base
   def convert_pdf_to_tiff
     page_size_a4 = '595 842'
     page_size_command = "<< /Policies << /PageSize 3 >> /InputAttributes currentpagedevice /InputAttributes get dup { pop 1 index exch undef } forall dup 0 << /PageSize [ #{page_size_a4} ] >> put >> setpagedevice"
-    directory = "/tmp/GS-#{GEMEINSCHAFT_VERSION}/faxes/#{self.id}"
+    directory = "/tmp/GS-#{GsParameter.get('GEMEINSCHAFT_VERSION')}/faxes/#{self.id}"
     system('mkdir -p ' + directory)
     tiff_file_name = File.basename(self.document.to_s.downcase, ".pdf") + '.tiff'
     system "cd #{directory} && gs -q -r#{self.fax_resolution.resolution_value} -dNOPAUSE -dBATCH -dSAFER -sDEVICE=tiffg3 -sOutputFile=\"#{tiff_file_name}\" -c \"#{page_size_command}\" -- \"#{Rails.root.to_s}/public#{self.document.to_s}\""
diff --git a/app/models/gs_cluster_sync_log_entry.rb b/app/models/gs_cluster_sync_log_entry.rb
index 063ff23..51e3b05 100644
--- a/app/models/gs_cluster_sync_log_entry.rb
+++ b/app/models/gs_cluster_sync_log_entry.rb
@@ -15,7 +15,7 @@ class GsClusterSyncLogEntry < ActiveRecord::Base
   after_create :apply_to_local_database
 
   def apply_to_local_database
-    if self.homebase_ip_address != HOMEBASE_IP_ADDRESS
+    if self.homebase_ip_address != GsParameter.get('HOMEBASE_IP_ADDRESS')
       if self.class_name.constantize.new.attribute_names.include?('is_native')
         case self.action
         when 'create'
@@ -84,7 +84,7 @@ class GsClusterSyncLogEntry < ActiveRecord::Base
   end
 
   def populate_other_cluster_nodes
-    if self.homebase_ip_address == HOMEBASE_IP_ADDRESS && self.waiting_to_be_synced == true
+    if self.homebase_ip_address == GsParameter.get('HOMEBASE_IP_ADDRESS') && self.waiting_to_be_synced == true
       if GsNode.where(:push_updates_to => true).count > 0
         GsNode.where(:push_updates_to => true).each do |gs_node|
           RemoteGsNode::GsClusterSyncLogEntry.site = gs_node.site
diff --git a/app/models/gs_parameter.rb b/app/models/gs_parameter.rb
new file mode 100644
index 0000000..9d9e996
--- /dev/null
+++ b/app/models/gs_parameter.rb
@@ -0,0 +1,37 @@
+class GsParameter < ActiveRecord::Base
+  attr_accessible :name, :section, :value, :class_type, :description
+
+  validates :name,
+            :presence => true,
+            :uniqueness => true
+
+  validates :value,
+            :presence => true
+
+  validates :class_type,
+            :presence => true,
+            :inclusion => { :in => ['String', 'Integer', 'Boolean', 'YAML'] }
+
+  def self.get(wanted_variable)
+    if GsParameter.table_exists?
+      item = GsParameter.where(:name => wanted_variable).first
+      if item.nil?
+        return nil
+      else
+        return item.value.to_i if item.class_type == 'Integer'
+        return item.value.to_s if item.class_type == 'String'
+        if item.class_type == 'Boolean'
+          return true if item.value == 'true'
+          return false if item.value == 'false'
+        end
+        return YAML.load(item.value) if item.class_type == 'YAML'
+      end
+    else
+      nil
+    end
+  end
+
+  def to_s
+    name
+  end
+end
diff --git a/app/models/hunt_group.rb b/app/models/hunt_group.rb
index 276ae53..184297c 100644
--- a/app/models/hunt_group.rb
+++ b/app/models/hunt_group.rb
@@ -8,17 +8,17 @@ class HuntGroup < ActiveRecord::Base
                                  :allow_nil => true, :allow_blank => true
 
   validates_presence_of  :strategy
-  validates_inclusion_of :strategy, :in => HUNT_GROUP_STRATEGIES
+  validates_inclusion_of :strategy, :in => (GsParameter.get('HUNT_GROUP_STRATEGIES').nil? ? [] : GsParameter.get('HUNT_GROUP_STRATEGIES'))
 
   validates_presence_of     :seconds_between_jumps, 
                             :if => Proc.new{ |hunt_group| hunt_group.strategy != 'ring_all' }
   validates_numericality_of :seconds_between_jumps,
                             :only_integer => true,
-                            :greater_than_or_equal_to => VALID_SECONDS_BETWEEN_JUMPS_VALUES.min,
-                            :less_than_or_equal_to => VALID_SECONDS_BETWEEN_JUMPS_VALUES.max,
+                            :greater_than_or_equal_to => (GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES').nil? ? 2 : GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES').min),
+                            :less_than_or_equal_to => (GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES').nil? ? 120 : GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES').max),
                             :if => Proc.new{ |hunt_group| hunt_group.strategy != 'ring_all' }
   validates_inclusion_of    :seconds_between_jumps, 
-                            :in => VALID_SECONDS_BETWEEN_JUMPS_VALUES,
+                            :in => (GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES').nil? ? [] : GsParameter.get('VALID_SECONDS_BETWEEN_JUMPS_VALUES')),
                             :if => Proc.new{ |hunt_group| hunt_group.strategy != 'ring_all' }
   validates_inclusion_of    :seconds_between_jumps,
                             :in => [nil],
diff --git a/app/models/phone_number.rb b/app/models/phone_number.rb
index 4c0cf46..d1e950f 100644
--- a/app/models/phone_number.rb
+++ b/app/models/phone_number.rb
@@ -18,8 +18,8 @@ class PhoneNumber < ActiveRecord::Base
   before_save :save_value_of_to_s
   after_create :copy_existing_call_forwards_if_necessary
   before_validation :'parse_and_split_number!'
-  validate :validate_number, :if => Proc.new { |phone_number| STRICT_INTERNAL_EXTENSION_HANDLING && STRICT_DID_HANDLING }
-  validate :check_if_number_is_available, :if => Proc.new { |phone_number| STRICT_INTERNAL_EXTENSION_HANDLING && STRICT_DID_HANDLING }
+  validate :validate_number, :if => Proc.new { |phone_number| GsParameter.get('STRICT_INTERNAL_EXTENSION_HANDLING') && GsParameter.get('STRICT_DID_HANDLING') }
+  validate :check_if_number_is_available, :if => Proc.new { |phone_number| GsParameter.get('STRICT_INTERNAL_EXTENSION_HANDLING') && GsParameter.get('STRICT_DID_HANDLING') }
   
   acts_as_list :scope => [:phone_numberable_id, :phone_numberable_type]
 
@@ -95,7 +95,7 @@ class PhoneNumber < ActiveRecord::Base
     else
       # Check if the number is an internal extension.
       if tenant
-        internal_extension_range = tenant.phone_number_ranges.where(:name => INTERNAL_EXTENSIONS).first
+        internal_extension_range = tenant.phone_number_ranges.where(:name => GsParameter.get('INTERNAL_EXTENSIONS')).first
         if internal_extension_range
           if internal_extension_range.phone_numbers.where(:number => number).length > 0
             parts[:extension] = number
@@ -192,8 +192,8 @@ class PhoneNumber < ActiveRecord::Base
   end
   
   def parse_and_split_number!
-    if self.phone_numberable_type == 'PhoneNumberRange' && self.phone_numberable.name == INTERNAL_EXTENSIONS
-      # The parent is the PhoneNumberRange INTERNAL_EXTENSIONS. Therefor it must be an extensions.
+    if self.phone_numberable_type == 'PhoneNumberRange' && self.phone_numberable.name == GsParameter.get('INTERNAL_EXTENSIONS')
+      # The parent is the PhoneNumberRange GsParameter.get('INTERNAL_EXTENSIONS'). Therefor it must be an extensions.
       #
       self.country_code = nil
       self.area_code = nil
@@ -202,8 +202,8 @@ class PhoneNumber < ActiveRecord::Base
       self.extension = self.number.to_s.strip
     else
       if self.tenant &&
-         self.tenant.phone_number_ranges.exists?(:name => INTERNAL_EXTENSIONS) && 
-         self.tenant.phone_number_ranges.where(:name => INTERNAL_EXTENSIONS).first.phone_numbers.exists?(:number => self.number)
+         self.tenant.phone_number_ranges.exists?(:name => GsParameter.get('INTERNAL_EXTENSIONS')) && 
+         self.tenant.phone_number_ranges.where(:name => GsParameter.get('INTERNAL_EXTENSIONS')).first.phone_numbers.exists?(:number => self.number)
         self.country_code = nil
         self.area_code = nil
         self.subscriber_number = nil
@@ -263,7 +263,7 @@ class PhoneNumber < ActiveRecord::Base
     if self.phone_numberable_type != 'PhoneBookEntry' && self.tenant
 
       phone_number_ranges = self.tenant.phone_number_ranges.where(
-                              :name => [INTERNAL_EXTENSIONS, DIRECT_INWARD_DIALING_NUMBERS]
+                              :name => [GsParameter.get('INTERNAL_EXTENSIONS'), GsParameter.get('DIRECT_INWARD_DIALING_NUMBERS')]
                             )
       if !phone_number_ranges.empty?                           
         if !PhoneNumber.where(:phone_numberable_type => 'PhoneNumberRange').
diff --git a/app/models/phone_number_range.rb b/app/models/phone_number_range.rb
index 2fdd9b6..b666487 100644
--- a/app/models/phone_number_range.rb
+++ b/app/models/phone_number_range.rb
@@ -6,7 +6,7 @@ class PhoneNumberRange < ActiveRecord::Base
   
   validates_presence_of :name
   validates_uniqueness_of :name, :scope => [:phone_number_rangeable_id, :phone_number_rangeable_type]
-  validates_inclusion_of :name, :in => [INTERNAL_EXTENSIONS, DIRECT_INWARD_DIALING_NUMBERS, SERVICE_NUMBERS]
+  validates_inclusion_of :name, :in => [GsParameter.get('INTERNAL_EXTENSIONS'), GsParameter.get('DIRECT_INWARD_DIALING_NUMBERS'), GsParameter.get('SERVICE_NUMBERS')]
   validates_presence_of :phone_number_rangeable_id
   validates_presence_of :phone_number_rangeable
   
diff --git a/app/models/sip_account.rb b/app/models/sip_account.rb
index 8459265..5388395 100644
--- a/app/models/sip_account.rb
+++ b/app/models/sip_account.rb
@@ -71,7 +71,7 @@ class SipAccount < ActiveRecord::Base
   after_update :log_out_phone_if_not_local
 
   def to_s
-    truncate((self.caller_name || "SipAccount ID #{self.id}"), :length => TO_S_MAX_CALLER_NAME_LENGTH) + " (#{truncate(self.auth_name, :length => TO_S_MAX_LENGTH_OF_AUTH_NAME)}@...#{self.host.split(/\./)[2,3].to_a.join('.') if self.host })"
+    truncate((self.caller_name || "SipAccount ID #{self.id}"), :length => GsParameter.get('TO_S_MAX_CALLER_NAME_LENGTH')) + " (#{truncate(self.auth_name, :length => GsParameter.get('TO_S_MAX_LENGTH_OF_AUTH_NAME'))}@...#{self.host.split(/\./)[2,3].to_a.join('.') if self.host })"
   end
   
   def call_forwarding_toggle( call_forwarding_service, to_voicemail = nil )
@@ -200,7 +200,7 @@ class SipAccount < ActiveRecord::Base
 
   # log out phone if sip_account is not on this node
   def log_out_phone_if_not_local
-    if self.gs_node_id && ! GsNode.where(:ip_address => HOMEBASE_IP_ADDRESS, :id => self.gs_node_id).first
+    if self.gs_node_id && ! GsNode.where(:ip_address => GsParameter.get('HOMEBASE_IP_ADDRESS'), :id => self.gs_node_id).first
       self.phones.each do |phone|
         phone.user_logout;
       end
diff --git a/app/models/tenant.rb b/app/models/tenant.rb
index d9351b7..c3e2926 100644
--- a/app/models/tenant.rb
+++ b/app/models/tenant.rb
@@ -3,11 +3,11 @@
 class Tenant < ActiveRecord::Base
   attr_accessible :name, :description, :sip_domain_id, :country_id, :language_id, :from_field_pin_change_email, :from_field_voicemail_email
 
-  if STRICT_INTERNAL_EXTENSION_HANDLING == true
+  if GsParameter.get('STRICT_INTERNAL_EXTENSION_HANDLING') == true
     attr_accessible :internal_extension_ranges
   end
 
-  if STRICT_DID_HANDLING == true
+  if GsParameter.get('STRICT_DID_HANDLING') == true
     attr_accessible :did_list
   end
 
@@ -93,7 +93,7 @@ class Tenant < ActiveRecord::Base
     name
   end
   
-  if STRICT_INTERNAL_EXTENSION_HANDLING == true
+  if GsParameter.get('STRICT_INTERNAL_EXTENSION_HANDLING') == true
     def array_of_internal_extension_numbers
       ranges = self.internal_extension_ranges.gsub(/[^0-9\-,]/,'').gsub(/[\-]+/,'-').gsub(/[,]+/,',').split(/,/)
       output = []
@@ -112,7 +112,7 @@ class Tenant < ActiveRecord::Base
     # Generate the internal_extensions
     #
     def generate_internal_extensions
-      internal_extensions = self.phone_number_ranges.find_or_create_by_name(INTERNAL_EXTENSIONS, :description => 'A list of all available internal extensions.')
+      internal_extensions = self.phone_number_ranges.find_or_create_by_name(GsParameter.get('INTERNAL_EXTENSIONS'), :description => 'A list of all available internal extensions.')
       
       phone_number_list = Array.new
 
@@ -122,7 +122,7 @@ class Tenant < ActiveRecord::Base
         elsif 
           # Don't create extensions like 911, 110 or 112 (at least by default)
           #
-          phone_number_list = (self.array_of_internal_extension_numbers - self.country.phone_number_ranges.where(:name => SERVICE_NUMBERS).first.phone_numbers.map{|entry| entry.number})
+          phone_number_list = (self.array_of_internal_extension_numbers - self.country.phone_number_ranges.where(:name => GsParameter.get('SERVICE_NUMBERS')).first.phone_numbers.map{|entry| entry.number})
         end
       end
 
@@ -133,7 +133,7 @@ class Tenant < ActiveRecord::Base
       
   end
 
-  if STRICT_DID_HANDLING == true
+  if GsParameter.get('STRICT_DID_HANDLING') == true
     def array_of_dids_generated_from_did_list
       numbers = self.did_list.downcase.gsub(/[^0-9,x\+]/,'').gsub(/[,]+/,',').split(/,/)
       array_of_all_external_numbers = []
@@ -152,7 +152,7 @@ class Tenant < ActiveRecord::Base
     # Generate the external numbers (DIDs)
     #
     def generate_dids
-      dids = self.phone_number_ranges.find_or_create_by_name(DIRECT_INWARD_DIALING_NUMBERS, :description => 'A list of all available DIDs.')
+      dids = self.phone_number_ranges.find_or_create_by_name(GsParameter.get('DIRECT_INWARD_DIALING_NUMBERS'), :description => 'A list of all available DIDs.')
       self.array_of_dids_generated_from_did_list.each do |number|
         dids.phone_numbers.find_or_create_by_name_and_number('DID', number)
       end
@@ -167,7 +167,7 @@ class Tenant < ActiveRecord::Base
     @internal_extensions_and_dids ||= self.phone_number_ranges_phone_numbers.
          where(:phone_numberable_type => 'PhoneNumberRange').
          where(:phone_numberable_id => self.phone_number_ranges.
-         where(:name => [INTERNAL_EXTENSIONS, DIRECT_INWARD_DIALING_NUMBERS]).
+         where(:name => [GsParameter.get('INTERNAL_EXTENSIONS'), GsParameter.get('DIRECT_INWARD_DIALING_NUMBERS')]).
          map{|pnr| pnr.id })
   end
 
@@ -175,7 +175,7 @@ class Tenant < ActiveRecord::Base
     @array_of_internal_extensions ||= self.phone_number_ranges_phone_numbers.
          where(:phone_numberable_type => 'PhoneNumberRange').
          where(:phone_numberable_id => self.phone_number_ranges.
-         where(:name => INTERNAL_EXTENSIONS).
+         where(:name => GsParameter.get('INTERNAL_EXTENSIONS')).
          map{|pnr| pnr.id }).
          map{|phone_number| phone_number.number }.
          sort.uniq
@@ -184,7 +184,7 @@ class Tenant < ActiveRecord::Base
   def array_of_dids
     @array_of_dids ||= self.phone_number_ranges_phone_numbers.
          where(:phone_numberable_type => 'PhoneNumberRange').
-         where(:phone_numberable_id => self.phone_number_ranges.where(:name => DIRECT_INWARD_DIALING_NUMBERS).map{|pnr| pnr.id }).
+         where(:phone_numberable_id => self.phone_number_ranges.where(:name => GsParameter.get('DIRECT_INWARD_DIALING_NUMBERS')).map{|pnr| pnr.id }).
          map{|phone_number| phone_number.to_s }.
          sort.uniq
   end
@@ -215,7 +215,7 @@ class Tenant < ActiveRecord::Base
   
   # Create a public phone book for this tenant
   def create_a_default_phone_book
-    if self.name != SUPER_TENANT_NAME
+    if self.name != GsParameter.get('SUPER_TENANT_NAME')
       general_phone_book = self.phone_books.find_or_create_by_name_and_description(
         I18n.t('phone_books.general_phone_book.name'),
         I18n.t('phone_books.general_phone_book.description', :resource => self.to_s)
diff --git a/app/models/user.rb b/app/models/user.rb
index 2d0256f..9b29dc5 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -27,7 +27,8 @@ class User < ActiveRecord::Base
   }
   
   validates_length_of [:new_pin, :new_pin_confirmation],
-    :minimum => MINIMUM_PIN_LENGTH, :maximum => MAXIMUM_PIN_LENGTH,
+    :minimum => (GsParameter.get('MINIMUM_PIN_LENGTH').nil? ? 4 : GsParameter.get('MINIMUM_PIN_LENGTH')), 
+    :maximum => (GsParameter.get('MAXIMUM_PIN_LENGTH').nil? ? 10 : GsParameter.get('MAXIMUM_PIN_LENGTH')),
     :allow_blank => true, :allow_nil => true
   validates_format_of [:new_pin, :new_pin_confirmation],
     :with => /^[0-9]+$/,