user display changes in model and mailer

app/models/message.rb

@@ -49,7 +49,7 @@ class Message < ActiveRecord::Base
     @reply_to = Message.find(message_id)
     add_recipients([@reply_to.sender])
     self.subject = I18n.t('messages.model.reply_subject', :subject => @reply_to.subject)
-    self.body = I18n.t('messages.model.reply_header', :user => @reply_to.sender.nick, :when => I18n.l(@reply_to.created_at, :format => :short)) + "\n"
+    self.body = I18n.t('messages.model.reply_header', :user => @reply_to.sender.display, :when => I18n.l(@reply_to.created_at, :format => :short)) + "\n"
     @reply_to.body.each_line{ |l| self.body += I18n.t('messages.model.reply_indent', :line => l) }
   end
 
@@ -64,7 +64,7 @@ class Message < ActiveRecord::Base
   end
 
   def sender_name
-    system_message? ? I18n.t('layouts.foodsoft') : sender.nick rescue "??"
+    system_message? ? I18n.t('layouts.foodsoft') : sender.display rescue "?"
   end
 
   def recipients
@@ -77,7 +77,7 @@ class Message < ActiveRecord::Base
         begin
           Mailer.foodsoft_message(self, user).deliver
         rescue
-          Rails.logger.warn "Deliver failed for #{user.nick}: #{user.email}"
+          Rails.logger.warn "Deliver failed for user \##{user.id}: #{user.email}"
         end
       end
     end

app/models/ordergroup.rb

@@ -23,7 +23,7 @@ class Ordergroup < Group
     "#{contact_phone} (#{contact_person})"
   end
   def non_members
-    User.all(:order => 'nick').reject { |u| (users.include?(u) || u.ordergroup) }
+    User.natural_order.all.reject { |u| (users.include?(u) || u.ordergroup) }
   end
 
   def value_of_open_orders(exclude = nil)
@@ -102,7 +102,7 @@ class Ordergroup < Group
   # Make sure, that a user can only be in one ordergroup
   def uniqueness_of_members
     users.each do |user|
-      errors.add :user_tokens, I18n.t('ordergroups.model.error_single_group', :user => user.nick) if user.groups.where(:type => 'Ordergroup').size > 1
+      errors.add :user_tokens, I18n.t('ordergroups.model.error_single_group', :user => user.display) if user.groups.where(:type => 'Ordergroup').size > 1
     end
   end
 

app/models/user.rb

@@ -158,8 +158,17 @@ class User < ActiveRecord::Base
     end
   end
 
+  # XXX this is view-related; need to move out things like token_attributes
+  #     then this can be removed
+  def display
+    # would be sensible to match ApplicationController#show_user
+    FoodsoftConfig[:use_nick] ? nick : "#{first_name} #{last_name}"
+  end
+
   def token_attributes
-    {:id => id, :name => "#{nick} (#{ordergroup.try(:name)})"}
+    # would be sensible to match ApplicationController#show_user
+    #   this should not be part of the model anyway
+    {:id => id, :name => "#{display} (#{ordergroup.try(:name)})"}
   end
 
 end