python-Django收集主机信息json格式

Control:

 from django.conf.urls import patterns, include, url

 from django.contrib import admin
 admin.autodiscover()

 urlpatterns = patterns('',
     # Examples:
     # url(r'^$', 'simplecmdb.views.home', name='home'),
     # url(r'^blog/', include('blog.urls')),

     url(r'^admin/', include(admin.site.urls)),
     url(r'^hostinfo/collect/$','hostinfo.views.collect'),
     url(r'^hostinfo/getjson/$','hostinfo.views.getjson'),
     url(r'^hostinfo/gettxt/$','hostinfo.views.gettxt'),
 )

View:

 from django.shortcuts import render
 from django.http import HttpResponse
 from hostinfo.models import Host,HostGroup
 import pickle
 import json

 # Create your views here.

 def collect(req):
     if req.POST:
         #dic = pickle.loads(req.body)
         dic = json.loads(req.body)
         hostname = dic['hostname']
         ip = dic['ip']
         product = dic['product']
         sn = dic['sn']
         vendor = dic['vendor']
         cpu_model = dic['cpu_model']
         cpu_num = dic['cpu_num']
         memory = dic['memory']
         osver = dic['osver']

         try:
             host = Host.objects.get(sn=sn)
         except:
             host = Host()
         host.hostname = hostname
         host.ip = ip
         host.product = product
         host.sn = sn
         host.vendor = vendor
         host.cpu_model = cpu_model
         host.cpu_num = cpu_num
         host.memory = memory
         host.osver = osver

         host.save()

         return HttpResponse('data have save into DB')
     else:
         return HttpResponse('there is no data from POST method')

 def getjson(req):
     ret_list = []
     hg = HostGroup.objects.all()
     for g in hg:
         ret = {'groupname':g.groupname,'members':[]}
         for h in g.members.all():
             ret_h = {'hostname':h.hostname,'ip':h.ip}
             ret['members'].append(ret_h)
     ret_list.append(ret)
     return HttpResponse(json.dumps(ret_list))

 def gettxt(req):
     res = ''
     hg = HostGroup.objects.all()
     for g in hg:
         groupname = g.groupname
         for h in g.members.all():
             hostname = h.hostname
             ip = h.ip
             res += groupname+' '+hostname+' '+ip+'\n'
     return HttpResponse(res)

Model:

 from django.db import models

 # Create your models here.

 class Host(models.Model):
     hostname = models.CharField(max_length=50)
     ip = models.IPAddressField()
     vendor = models.CharField(max_length=50)
     product = models.CharField(max_length=50)
     sn = models.CharField(max_length=50)
     cpu_model = models.CharField(max_length=50)
     cpu_num = models.IntegerField()
     memory = models.CharField(max_length=50)
     osver = models.CharField(max_length=50)
     def __unicode__(self):
         return self.hostname

 class HostGroup(models.Model):
     groupname = models.CharField(max_length=50)
     members = models.ManyToManyField(Host)