On Dec 13, 2006, at 7:59 AM, Mircea Amarascu wrote:
Hello,
I want to attach the result of a database SELECT query to the
response of
a HTTP GET request.
In twisted.web I've done it this way:
------------------------------
from twisted.web import resource, server, http
from twisted.enterprise import adbapi
class Site(resource.Resource):
...
def render(self, request):
query = "SELECT data FROM test"
self.db.runQuery(query).addCallback(
self._gotData, request).addErrback(
self._dbError, request)
return server.NOT_DONE_YET
def _gotData(self, results, request):
request.write("%s" % data[0])
request.write(body)
request.finish()
def _dbError(self, failure, request):
request.setResponseCode(http.INTERNAL_SERVER_ERROR)
request.write("Error fetching data.")
request.finish()
------------------------------
What is the best way to perform the same operation in web2? A
web2.server.NOT_DONE_YET constant is not defined.
In other words, how could I return a defer-related response
instead of a simple http.Response object ?
Thank you.
You can return a defer.Deferred() that'll be fired with an
http.Response. Alternatively if you have a lot of data, it may be
useful to return an http.Response immediately, and use a stream
object to write the data incrementally. (see twisted.web2.stream for
information on this) Please note however that the stream API is not
finalized, and in fact a new alternative implementation is just
awaiting it's author having time to finish it.
-David
_______________________________________________
Twisted-web mailing list
[email protected]
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
David Reid
http://dreid.org/
_______________________________________________
Twisted-web mailing list
[email protected]
http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-web
