hexagonit.decorators 0.2

0.2 (2007-09-05)

• Fixed problem with methods not being passed parameters from the query string. When a view method was called directly using an URL the parameters from the query string were lost when a view method was decorated. The decorators now push back the query parameters into the method call.

0.1 (2007-08-31)

• First public release.

^{tt1}$ module

这个模块提供了对zope 3浏览器有用的装饰器。 视图（在zope 2中也可用）。

JSON decorator

json装饰器使用simplejson对 修饰函数为json。

>>> from hexagonit.decorators.browser import json

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

传递给decorator的任何关键字参数都将传递给 simplejson.dumps函数。

>>> @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

nocachedecorator用于zope 3视图并设置 适当的http头以禁用 装饰方法。

>>> from hexagonit.decorators.browser import nocache

我们将演示如何将decorator与一个虚拟视图对象一起使用。

>>> 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

还可以同时使用jsondecorator和 nocachedecorator同时。