how to update cache or force recaching about pony

[amalashkevich]

Each function which works with Pony ORM should be wrapped with
@with_transaction decorator. This decorator automatically does commit (or
rollback in case of an exception happened inside the function), clears the
cache and returns the database connection to the connection pool.
If you use Flask you can wrap your application this way:
app.wsgi_app = with_transaction(app.wsgi_app)
In this case there is no need to wrap each function.

On Fri, May 3, 2013 at 2:46 AM, xmonader [email protected] wrote:

Hi, i'm working on application and apparently there as conflict between
the current data and the cached data. so is there away to force reacaching
on the new data available ?

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Reply to this email directly or view it on GitHubhttps://github.com//issues/5
.

AM

[xmonader]

Thanks for the quick response, I'm using Bottle for this application.

Now i'm getting Obsolete cache (https://gist.github.com/xmonader/5506317)

This is how i modified the code with_transaction decorator
https://gist.github.com/xmonader/5506325

[kozlovsky]

You should apply @with_transaction decorator to most outer function which works with the database. When you use Bottle, this most outer function will be the WSGI application.

I think you should remove @with_transaction decorator off your create_link() function and instead add this line to your code, after all imports from Bottle and pony:

app().wsgi = with_transaction(app().wsgi)

I cannot check right now if this line is correct, but probably it is. If it doesn't work, I'll give correct answer tomorrow, when I'll be near my PC. If you will test this line earlier, please tell how it works

[xmonader]

@kozlovsky : Thanks for your help, this is how I managed it

app=default_app()
app.__name__="something"
app=with_transaction(app)
run(app=app,debug=True, port=7000,reloader=True)

without manually setting name to app, I'll get this error
Traceback (most recent call last):
File "app.py", line 101, in
app=with_transaction(default_app())
File "/home/striky/Envs/bottleurl/lib/python2.7/site-packages/pony/utils.py", line 41, in new_func
return old_dec(old_func, _args, *_kwargs)
File "/home/striky/Envs/bottleurl/lib/python2.7/site-packages/pony/utils.py", line 55, in decorator_with_params
return copy_func_attrs(new_func, old_func, old_dec.name)
File "/home/striky/Envs/bottleurl/lib/python2.7/site-packages/pony/utils.py", line 25, in copy_func_attrs
new_func.name = old_func.name
AttributeError: 'Bottle' object has no attribute 'name'

Thanks alot.

[amalashkevich]

We've just added the integration with Bottle. You can use PonyPlugin from pony/orm/integration/bottle_plugin.py module. Check the example here pony/orm/examples/bottle_example.py