Using TG v2.2.2 I am trying to access the beaker cache from a custom
middleware object but I'm getting an error:
"TypeError: No object (name: cache) has been registered for this thread."
As per the docs, I am using `wrap_app` in the construction of
`make_base_app`
Stripped down to its bare essentials, I have:
from tg import cache
from proj.config.app_cfg import base_config
from proj.config.environment import load_environment
class MyMiddleware(object):
base_path = "/my_route"
def __init__(self, app):
self.app = app
def __call__(self, environment, start_response):
path = environment.get('PATH_INFO')
if not path.startswith(self.basepath):
return self.app(environment, start_response)
# access cache here.
# c = environment.get('beaker.cache')
# rg = c.regions # this works
# rg = cache.regions # should be available from the import but
throws:
# TypeError: No object (name: cache)
registered in the thread
status = '200 OK'
response_headers = [('Content-type','text/plain')]
start_response(status, response_headers)
return ['Hello world!\n']
def make_app(global_conf, full_stack=True, **app_conf):
app = make_base_app(global_conf,
full_stack=True,
wrap_app=MyMiddleware,
**app_conf
)
In the __call__() of the custom middleware I am able to access the cache,
using:
c = environment.get('beaker.cache')
But my understanding from the docs is that I should be able to access this
via the `from tg import cache` -- and I need to be able to access the cache
from a separate function, called by the __call__(). In other words, the
cache (in the stack) should be available to any controllers/methods post
setup of the custom middleware.
My understanding of the docs is that, having used `wrap_app` I should have
access to the full stack (including the cache) --- but I am unable to
access it...
How am I able to access the cache? (Is my method above close?!)
Many thanks,
Rob
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