diff --git a/.gitignore b/.gitignore
index fa0aec3..ebb7a09 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 *.pyo
 *.log
 .idea
-manage.py
\ No newline at end of file
+manage.py
+migrations
\ No newline at end of file
diff --git a/checkin/models.py b/checkin/models.py
index b9bbf23..e746cce 100644
--- a/checkin/models.py
+++ b/checkin/models.py
@@ -22,7 +22,6 @@ def __unicode__(self):
         return "%d %d" % (self.id, self.lesson.id)
 
     class Meta:
-        managed = False
         db_table = 'Checkin'
 
 
@@ -41,7 +40,6 @@ def __unicode__(self):
         return "%d %d" % (self.id, self.lesson.id)
 
     class Meta:
-        managed = False
         db_table = 'CheckinRecord'
 
 
@@ -57,7 +55,6 @@ class Ask(models.Model):
     student = models.ManyToManyField('school.Student', through='Asktostudent',
                                             through_fields=('ask', 'student'))
     class Meta:
-        managed = False
         db_table = 'Ask'
 
 
@@ -66,5 +63,4 @@ class Asktostudent(models.Model):
     ask = models.ForeignKey(Ask, models.DO_NOTHING, db_column='askid', blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'AsktoStudent'
\ No newline at end of file
diff --git a/course/models.py b/course/models.py
index af81594..0d8bf82 100644
--- a/course/models.py
+++ b/course/models.py
@@ -78,7 +78,6 @@ def __unicode__(self):
         return u"%s" % (self.title)
 
     class Meta:
-        managed = False
         db_table = 'Course'
 
 
@@ -222,7 +221,6 @@ def __unicode__(self):
         return "%d %s-%d-%d-%d-%d" % (self.id, self.term, self.year, self.week, self.day, self.time)
 
     class Meta:
-        managed = False
         db_table = 'Lesson'
 
 
@@ -232,5 +230,4 @@ class Studentcourse(models.Model):
                                related_name='courses')
 
     class Meta:
-        managed = False
         db_table = 'StudentCourse'
diff --git a/rbac/models.py b/rbac/models.py
index 6519efd..61c2a76 100644
--- a/rbac/models.py
+++ b/rbac/models.py
@@ -10,7 +10,6 @@ class Resourcejurisdiction(models.Model):
                                related_name="children")
 
     class Meta:
-        managed = False
         db_table = 'ResourceJurisdiction'
 
 
@@ -20,5 +19,4 @@ class Roletoresourcejurisdiction(models.Model):
                                                db_column='resourcejurisdictionid', blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'RoletoResourceJurisdiction'
diff --git a/school/models.py b/school/models.py
index 7622af4..35cedaa 100644
--- a/school/models.py
+++ b/school/models.py
@@ -16,7 +16,6 @@ def teachernumber(self):
         return self.teacher_set.count()
 
     class Meta:
-        managed = False
         db_table = 'Administration'
 
 
@@ -30,7 +29,6 @@ def __unicode__(self):
         return u"%s" % (self.name)
 
     class Meta:
-        managed = False
         db_table = 'Class'
 
 
@@ -40,7 +38,6 @@ class Classtime(models.Model):
     endtime = models.TimeField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'ClassTime'
 
 
@@ -52,7 +49,6 @@ def __unicode__(self):
         return u"%s" % (self.location)
 
     class Meta:
-        managed = False
         db_table = 'Classroom'
 
 
@@ -72,7 +68,6 @@ def __unicode__(self):
         return u"%s" % (self.name)
 
     class Meta:
-        managed = False
         db_table = 'Department'
 
 
@@ -92,7 +87,6 @@ def classamount(self):
         return self.class_set.count()
 
     class Meta:
-        managed = False
         db_table = 'Major'
 
 
@@ -107,7 +101,6 @@ def __unicode__(self):
         return u"%s" % (self.description)
 
     class Meta:
-        managed = False
         db_table = 'SchoolTerm'
 
 
@@ -120,7 +113,6 @@ def __unicode__(self):
         return "%d" % (self.seattype)
 
     class Meta:
-        managed = False
         db_table = 'Seat'
 
 
@@ -141,7 +133,6 @@ def __unicode__(self):
         return u"%s" % (self.name)
 
     class Meta:
-        managed = False
         db_table = 'Student'
 
 
@@ -160,7 +151,6 @@ def __unicode__(self):
         return u"%s" % (self.name)
 
     class Meta:
-        managed = False
         db_table = 'Teacher'
 
 
@@ -170,7 +160,6 @@ class Teachertoadministration(models.Model):
                                        null=True)
 
     class Meta:
-        managed = False
         db_table = 'TeachertoAdministration'
 
 
@@ -179,7 +168,6 @@ class Teachertodepartment(models.Model):
     department = models.ForeignKey(Department, models.DO_NOTHING, db_column='departmentid', blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'TeachertoDepartment'
 
 
diff --git a/user/models.py b/user/models.py
index cb83396..4e2e643 100644
--- a/user/models.py
+++ b/user/models.py
@@ -16,7 +16,6 @@ def __unicode__(self):
         return u"%s" % (self.name)
 
     class Meta:
-        managed = False
         db_table = 'Role'
 
 
@@ -25,7 +24,7 @@ class User(models.Model):
     openid = models.CharField(max_length=28, blank=True, null=True)
     password = models.CharField(max_length=32, blank=True, null=True)
     sex = models.IntegerField(blank=True, null=True)
-    ip = models.TextField(blank=True, null=True)  # This field type is a guess.
+    ip = models.GenericIPAddressField(protocol='IPv4', blank=True, null=True)
     registertime = models.DateTimeField(blank=True, null=True)
     lastlogintime = models.DateTimeField(blank=True, null=True)
     email = models.CharField(max_length=40, blank=True, null=True)
@@ -48,7 +47,6 @@ def __unicode__(self):
         return u"%s" % (self.username)
 
     class Meta:
-        managed = False
         db_table = 'User'
 
 
@@ -57,5 +55,4 @@ class Usertorole(models.Model):
     role = models.ForeignKey(Role, models.DO_NOTHING, db_column='roleid', blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'UsertoRole'
diff --git a/wechat/models.py b/wechat/models.py
index 4c3a38b..98e7ca5 100644
--- a/wechat/models.py
+++ b/wechat/models.py
@@ -8,7 +8,6 @@ class Wechatkeyword(models.Model):
     data = models.CharField(max_length=255, blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'WechatKeyword'
 
 
@@ -28,5 +27,4 @@ class Wechatuser(models.Model):
     accuracy = models.FloatField(blank=True, null=True)
 
     class Meta:
-        managed = False
         db_table = 'WechatUser'
\ No newline at end of file