Skip to main content

Collection of useful decorators for Zope development

Project description

The package contains function decorators that help implementing repetitive tasks. It is mostly oriented towards Zope development.

Change History

0.1 (2007-08-31)

  • First public release.

Detailed Documentation

browser module

This module provides decorators that are useful with Zope 3 browser views (also usable in Zope 2).

JSON decorator

The JSON decorator uses simplejson to encode the return value of the decorated function as JSON.

>>> from hexagonit.decorators.browser import json
>>> @json
... def json_callback():
...     """JSON callback method."""
...     return {'bool' : (True, False) }
>>> json_callback()
'{"bool": [true, false]}'

Any keyword arguments passed to the decorator will be passed on to the simplejson.dumps function.

>>> @json(sort_keys=True, ensure_ascii=False)
... def json_callback():
...     """JSON callback method."""
...     return {'foo' : None, 'bool' : (True, False), 'ints' : [1,2,3]}
>>> json_callback()
u'{"bool": [true, false], "foo": null, "ints": [1, 2, 3]}'

HTTP cache disabling decorator

The nocache decorator is used for Zope 3 views and sets the appropriate HTTP headers to disable caching for the results of the decorated method.

>>> from hexagonit.decorators.browser import nocache

We’ll demonstrate the use of the decorator with a dummy view object.

>>> class Dummy(object):pass
>>> class BrowserView(object):
...     """Dummy view class that fakes the ``request`` object."""
...     def __init__(self):
...         self.request = Dummy()
...         self.request.response = Dummy()
...         self.headers = []
...         self.request.response.setHeader = lambda header,value: self.headers.append('%s: %s' % (header, value))
...
...     @nocache
...     def ajax_callback(self):
...         print '\n'.join(self.headers)
>>> view = BrowserView()
>>> view.ajax_callback()
Pragma: no-cache
Expires: Sat, 1 Jan 2000 00:00:00 GMT
Cache-Control: no-cache, must-revalidate

It is also possible to use both the json decorator and the nocache decorator at the same time.

Project details


Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
hexagonit.decorators-0.1-py2.4.egg (7.1 kB) Copy SHA256 hash SHA256 Egg 2.4
hexagonit.decorators-0.1.tar.gz (3.6 kB) Copy SHA256 hash SHA256 Source None

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page