我有一个简单的聊天服务器,我想在新客户端连接时查询我的数据库。我尝试使用twistar CRUD接口但是我遇到了一个奇怪的错误:
exceptions.NameError:未定义全局名称“结果”
from twisted.internet.protocol import Factory
from twisted.protocols.basic import LineReceiver
from twisted.enterprise import adbapi
from twisted.internet import reactor
from twistar.registry import Registry
from twistar.dbobject import DBObject
Registry.DBPOOL = adbapi.ConnectionPool('MySQLdb', host="localhost", db="testdb", user="test", passwd="test")
dbconfig = Registry.getConfig()
class Chat(LineReceiver):
# Here is the callback
def result(values):
print values
def __init__(self, users):
self.users = users
self.name = None
self.state = "GETNAME"
def connectionMade(self):
self.sendLine("What's your name?")
def connectionLost(self, reason):
if self.users.has_key(self.name):
del self.users[self.name]
def lineReceived(self, line):
if self.state == "GETNAME":
self.handle_GETNAME(line)
else:
def handle_GETNAME(self, name):
if self.users.has_key(name):
self.sendLine("Name taken, please choose another.")
return
self.sendLine("Welcome, %s!" % (name,))
# Here is the query
d = dbconfig.select("testtable").addCallback(result)**
self.name = name
self.users[name] = self
self.state = "CHAT"
def handle_CHAT(self, message):
message = "<%s> %s" % (self.name, message)
for name, protocol in self.users.iteritems():
if protocol != self:
protocol.sendLine(message)
def result(var):
print var
class ChatFactory(Factory):
def __init__(self):
self.users = {} # maps user names to Chat instances
def buildProtocol(self, addr):
return Chat(self.users)
reactor.listenTCP(8000, ChatFactory())
reactor.run()
在聊天服务器之外,CRUD数据库查询可以正常运行。
提前谢谢
答案 0 :(得分:2)
如果结果是该类的成员,则必须以self开头。
d = dbconfig.select("testtable").addCallback(self.result)**