Am 07.11.2010 17:31 schrieb Daniel Fetchinson:
That is great news! How much work was involved in porting your app and
which part of it did you need to change most?
The main work was actually finishing the work on the TG 1.5 branch so
that it would run my old TG 1.1 app with server.webpath etc. properly.
Since TG 1.5 offers Genshi widget templates now, I used the opportunity
to convert all my page and widget templates to Genshi. This was not a
big deal, and the tgadmin kid2genshi command is helping a lot.
But TG 1.5 does still support Kid, so you don't even need to do this.
Upgraded to the latest SQLAlchemy version was not a big deal either,
since TG 1.5 emulates the old session-aware mapper.
Some small changes in the config were necessary. I will write up the
detailed instructions in the TG 1.5 wiki when I find some time.
A minor problem with CherryPy 3 is that you can't do "from cherrypy
import session" any more since sessions are now only available after
startup. I will add some documentation on how to manually set up the
sessions early, and how to implement a visit based session backend for
CherryPy (the ram sessions have problems with mod_wsgi, the file based
sessions can be problematic, and the Postgres based session would not
use the already existing connection pool used by SQLAlchemy). The former
problem can of course also be solved by simply referencing the session
as cherrypy.session everywhere.
One thing I still need to port over is my error catcher code that shows
nicer error pages and sends error reports to the admin. We had a recipe
for TG 1.1 that unforuntately works only with CherryPy 2. I'll need to
create a recipe for CherryPy 3.
But unless your app relies on CherryPy internals, updating from TG 1.1
to TG 1.5 is not a big deal.
-- Christoph
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