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توضیحات

References to Zope objects for Zope 2.10 (or above)

ویژگی	مقدار
سیستم عامل	OS Independent
نام فایل	Products.References-1.0
نام	Products.References
نسخه کتابخانه	1.0
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Dieter Maurer
ایمیل نویسنده	dieter@handshake.de
آدرس صفحه اصلی	http://pypi.python.org/pypi/Products.References
آدرس اینترنتی	https://pypi.org/project/Products.References/
مجوز	BSD

A ``Reference`` is a Zope object refering to another Zope object, called its *Target*. The target it identified by a path relative to the parent of the ``Reference``. It is resolved into the target through ``restrictedTraverse``. The attribute ``Target`` as well as the method ``getTarget`` give the target object. A ``Reference`` behaves almost like its target. It appears to have (most of) its attributes and methods. In this sense, it is very similar to Shane's ``Symlink`` product. Unlike a ``Symlink``, however, a ``Reference`` has its own id, title and management facilities and therefore can be distinguished from the refered to object. This is very difficult for a ``SymLink``; therefore, I consider ``Reference`` safer. On lookup, a ``Reference`` prefers its own attributes over those of the target. This means that it behaves as a reference and partially as its target. Caveats ======= There are security weaknesses: the ``setDefaultAccess('allow')`` and the ``declareObjectProtected('Access contents information')`` of ``Reference`` spill over to the target when accessed through the reference. This is a side effect of Zope's (strange) security policy. In order to ensure manageability of the Reference, ``__before_publishing_traverse__`` and ``__bobo_traverse__`` are not relayed to the target. It is very difficult (I think impossible) to emulate the special treatment of Python Methods by acquisition. The current implementation tries hard to emulate enough that Python Scripts (and similar objects) get correct bindings. However, the acquisition context is otherwise different from how it were when directly called. Zope toolkit (aka Zope3) adapters (this includes views) may not work on references as you expect because the adapters see the interfaces implemented by the reference itself, not those of the refered to object.

نحوه نصب

نصب پکیج whl Products.References-1.0:

pip install Products.References-1.0.whl

نصب پکیج tar.gz Products.References-1.0:

pip install Products.References-1.0.tar.gz