init import from old mailr project (http://svn.littlegreen.org/mailr/trunk)

components/contacts/contact_group.rb

@@ -0,0 +1,25 @@
+class ContactGroup < ActiveRecord::Base
+  has_and_belongs_to_many :contacts, :class_name => "Contact", :join_table => "contact_contact_groups", :association_foreign_key => "contact_id", :foreign_key => "contact_group_id"
+
+  def ContactGroup.find_by_user(user_id)
+    find_by_sql("select * from contact_groups where customer_id = #{user_id} order by name asc")
+  end
+  
+  protected
+    def validate
+      errors.add('name', :contactgroup_name_invalid) unless self.name =~ /^.{1,50}$/i
+    end
+    
+    def validate_on_create
+      if ContactGroup.find_first(["name = '#{name}' and customer_id = #{user_id}"])
+        errors.add("name", _('Please enter group name (1 to 50 characters)'))
+      end
+    end
+    
+    def validate_on_update
+      if ContactGroup.find_first(["name = '#{name}' and customer_id = #{user_id} and id <> #{id}"])
+        errors.add("name", _('You already have contact group with this name'))
+      end
+    end
+    
+end