user status method. Now the sub_role shall be sat with it's status in order to record sub_role status into user object.

Sub_role can be removed normally and the method check_status_record  will make sure data is being saved as it should be.
Also unnecessary role will be removed if no sub role exists.

app/models/user/user.rb

@@ -34,8 +34,40 @@ class User
   accepts_nested_attributes_for :attribute_values, :allow_destroy => true 
 
   before_create :initialize_desktop
+  before_save :check_status_record
   scope :remote_account, where(:nccu_id.ne => nil)
 
+
+  def set_sub_role(sub_role_id,status_id)
+    self.sub_roles << SubRole.find(sub_role_id)
+    self.status_record.store(sub_role_id,status_id)
+  end
+
+  def get_status(*params)
+    param = params[0]
+    case param.class.to_s
+    when 'String'
+      sr = ::SubRole.find sub_role_id
+    when 'Hash'
+      sr = ::SubRole.first({conditions:{key: param[:key]}})
+    end
+    if self.sub_roles.include?(sr)
+      return ::Status.find(status_record.fetch(sr.id.to_s))
+    else
+      nil
+    end
+  end
+
+  def self.find_by_status_and_sub_role_key(sub_role_key,status_key)
+    sr = ::SubRole.first({conditions: { key: sub_role_key }})
+    status = ::Status.first({conditions:{role_id: sr.role.id,key: status_key}})
+    find_by_status(sr.id,status.id)
+  end
+
+  def self.find_by_status(sub_role_id,status_id)
+    User.where("status_record.#{sub_role_id}" => status_id)
+  end
+
   def create_dept_cache
     dept_hash = {}
 
@@ -91,4 +123,21 @@ class User
     self.build_desktop
   end
   
+  protected
+
+  def check_status_record
+    roles = sub_roles.collect{|t| t.role}.uniq  #get all role from sub_roles
+    sub_roles_ary = sub_roles.collect{|t| t.id.to_s}
+    self.status_record = status_record.keep_if{|sub_role_id, status_id|
+      includeing = sub_roles_ary.include?(sub_role_id) 
+      valide = false
+      if includeing
+        sub_role = SubRole.find sub_role_id
+        valide = sub_role.role.statuses.include? (Status.find status_id)
+      end
+
+      (includeing and valide)
+    }
+  end
+
 end