#coding=utf-8
'''
author:the5fire
blog:http://www.the5fire.net
date:2012-4-09
'''
frommodelsimportChat
httpimportHttpResponse
shortcutsimportrender_to_response
utilsimportsimplejson
importtime

'''
public
@desc 页面载入或者刷新的时候，重置记录指针为0
@return
'''

defloadpage(request):

request.session['record_offset']=0
returnrender_to_response('chat/chat.html',{})


'''

public

@desc 简单的控制添加和查询

'''

defchat(request):
ifrequest.method=='POST':
returnsay(request)
elifrequest.'GET':
returnchatAllLog(request
else:
returnHttpResponse('access deny')

'''

public

@desc 删除对应的记录

'''

defchatDelete(request,delete_id):
Chat.objects.get(id=delete_id).delete()
record_offset=request.session.get('record_offset')
request.'record_offset']=record_offset -1
returnHttpResponse(simplejson.dumps({'success':True}),mimetype='application/json')

'''
public
@desc 保存用户的消息到数据库中
@param POST中的，username和content
'''

defsay(request):
req=simplejson.loads(request.raw_post_data)
username=req['username']
content=req['content']

ifnotcontent:
'application/json')

chat=Chat()
chat.content=content
chat.username=username
chat.save()

'''
public
@desc 根据session中的record_offset的数值获取以该数值为起始的所有记录
@return 返回对应的对象的字典形式
'''

defchatAllLog(request):
if'record_offset'inrequest.session:
record_offset=request.'record_offset')
else:
record_offset=0
request.0
chatList=Chat.objects.all()[record_offset:]
chatlist_dict=[]
request.'record_offset']=len(chatList)+ record_offset
forchatinchatList:
chatlist_dict.append({'id':chat.id,48)">'content':chat.content,
'username':chat.username,48)">'date':str(chat.date).split('.')[0]
})
dumps(chatlist_dict),48)">'application/json')