Abdul-Wahid Paterson wrote:
Hi
I thought the twisted enterprise was meant to be more suited...
http://twistedmatrix.com/projects/core/documentation/howto/enterprise.html
(Sorry Martin for hijacking your question but I think we want to know
the same thing). Anyway, the method on this page sounds good but I
wasn't actually sure how I fit this in with the renderers. Especially,
there are some SQL queries I want to do before rendering anything on the
page and perhaps before even sending HTTP header information. If I am
calling the deffered from renderHTTP how do I use the result within
renderHTTP.
An example would be nice :)
That's a pretty elementary question. Perhaps someone could add a simple
example like this to the twisted.web docs?
from twisted.web import resource, server
from twisted.enterprise import adbapi
mypool = adbapi.ConnectionPool(...)
class page(resource.Resource)
def render_GET(self, request):
d = mypool.runInteraction(self.query, request_args)
d.addCallback(self.ok, request)
d.addErrback(self.err, request)
return server.NOT_DONE_YET
def query(self, cursor, request_args):
"""I run in a thread. Do database stuff here"""
cursor.execute(...)
return cursor.fetchall()
def ok(self, results, request):
request.write("""<html>...""")
for row in results:
request.write(...row...)
request.finish()
def ok(self, failure, request):
request.write("""<html><body><h2>Error</h2>""")
request.write(failure.getErrorMessage())
request.write("""</body></html>""")
request.finish()
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