diff --git a/paramecio/citoplasma/adminutils.py b/paramecio/citoplasma/adminutils.py
index f5fc564..bcef999 100644
--- a/paramecio/citoplasma/adminutils.py
+++ b/paramecio/citoplasma/adminutils.py
@@ -8,6 +8,7 @@ from paramecio.citoplasma.httputils import GetPostFiles
 from paramecio.citoplasma.keyutils import create_key_encrypt, create_key_encrypt_256, create_key
 from bottle import response,request
 from paramecio.cromosoma.webmodel import WebModel
+from time import time
 
 try:
 
diff --git a/paramecio/citoplasma/plugins.py b/paramecio/citoplasma/plugins.py
index 16c66e5..f6e26b5 100644
--- a/paramecio/citoplasma/plugins.py
+++ b/paramecio/citoplasma/plugins.py
@@ -9,6 +9,7 @@ class LoginPlugin(object):
 
     name = 'login'
     api = 2
+    login_url='login'
     
     def __init__(self, keyword='login'):
         
@@ -51,11 +52,20 @@ class LoginPlugin(object):
                 #Check if remember_login cookie
                 #, secret=config.key_encrypt
 
-                redirect(make_url('login'))
+                redirect(make_url(login_url))
             
         # Replace the route callback with the wrapped one.
         return wrapper
+
+class AdminLoginPlugin(LoginPlugin):
+    
+    name = 'adminlogin'
+    api = 2
+    
+    def __init__(self, keyword='login_admin'):
         
+        self.keyword=keyword
+            
         
 class DbPlugin(object):
 
diff --git a/paramecio/cromosoma/corefields.py b/paramecio/cromosoma/corefields.py
index 3b7eeb5..491a8fe 100644
--- a/paramecio/cromosoma/corefields.py
+++ b/paramecio/cromosoma/corefields.py
@@ -179,6 +179,8 @@ class ForeignKeyField(IntegerField):
         
         self.change_form(coreforms.SelectModelForm, [related_table, self.named_field, self.identifier_field])
 
+        self.default_value=None
+
     def check(self, value):
         
         value=super().check(value)