cmdb models数据库结构

from __future__ import unicode_literals
from django.contrib.auth.models import User
from django.db import models

# Create your models here.

class Host(models.Model):
    hostame = models.CharField(max_length=)
    ip = models.GenericIPAddressField()
    port = models.IntegerField()
    system_type_choices=(
        ('linux','LINUX'),
        ('wind64','Windows64'),
    )
    system_type=models.CharField(choices=system_type_choices,max_length=)
    enable = models.BooleanField(default=True)
    online_date = models.DateTimeField(auto_now_add=True)
    groups = models.ManyToManyField('HostGroup')
    idc = models.ForeignKey('IDC')

    def __unicode__(self):
        return self.hostame

class HostGroup(models.Model):
    name = models.CharField(max_length=,unique=True)

    def __unicode__(self):
        return self.name

class IDC(models.Model):
    name = models.CharField(max_length=,unique=True)
    def __unicode__(self):
        return self.name

class UserProfile(models.Model):
    user = models.OneToOneField(User)
    name = models.CharField(max_length=,unique=True)
    host_groups = models.ManyToManyField("HostGroup",blank=True,null=True)
    hosts = models.ManyToManyField('Host',blank=True,null=True)