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توضیحات

Archetypes fieldtraverser

ویژگی	مقدار
سیستم عامل	OS Independent
نام فایل	archetypes.fieldtraverser-0.4.4
نام	archetypes.fieldtraverser
نسخه کتابخانه	0.4.4
نگهدارنده	[]
ایمیل نگهدارنده	[]
نویسنده	Jens Klein, Johannes Raggam
ایمیل نویسنده	dev@bluedynamics.com
آدرس صفحه اصلی	http://svn.plone.org/svn/archetypes/archetypes.fieldtraverser
آدرس اینترنتی	https://pypi.org/project/archetypes.fieldtraverser/
مجوز	GPL

========================= archetypes.fieldtraverser ========================= Overview ======== The `archetypes.fieldtraverser` is used to traverse to an Archetypes field and access its storage. It patches `Products.Archetypes` so that it uses the fieldtraverser for access to fields. Use Cases ========= - Access to images, files or other binary data via AnnotationStorage instead of traditional AttributeStorage. archetypes.fieldtraverser eliminates the need to hack `__bobo_traverse__` for this. Advantage: When accessing objects with binary data stored in an AttributeStorage, much binary data chunks are loaded regardless if they are used. When doing this quite often the ZODB is unnecessarily stressed. - You can use archetypes.fieldtraverser for simple Web Services which return just the content of Archetypes fields without the HTML rendered by widgets. - Impress your friends by easily accessing field-contents via URLs. Usage ===== In an URL this traverser can be used to access a fields data by use of the fieldname and the storage variant if needed (such as image sizes): `obj/++atfield++FIELDNAME` or `obj/++atfield++FIELDNAME-STORAGENAME` Example ======= To access an original image from a field named 'photo': `obj/++atfield++photo` To access its thumbnail with size named 'thumb': `obj/++atfield++photo-thumb` Dependencies ============ `Products.Archetypes` Installation ============ Install like any other Plone egg and import the GenericSetup profiles in ZMI, portal_setup. Known Issues ============ The ImageWidget, FileWidget and RichWidget are patched to use the `++atfield++FIELDNAME` notation for accessing binary contents. This patch is done via updating the fields' `_properties` which is then copied in the concrete schematas. But our default patch mechanism does not affect ATContentTypes (and possibly other ConentTypes too) because they are loaded by Zope BEFORE the patches are applied. This happens also for eggified products in Plone3.2 because `Products.ATContentTypes` is being recognised as a Product by Zope/Five because of the "Products" namespace. Therefore `Products.ATContentTypes` is loaded BEFORE any eggs are loaded. So we have to patch the concrete ATContentTypes too. See `patch.py` for more information. Please note that RichWidget has the ability to upload and download files, and therefore we also provide custom fieldtraverser aware widgets. BUT the upload/download feature is deactivated by default in the RichWidget templates and settings. The RichWidget patching is done just for completeness. So, if you include your own Products or eggs in the "Products" namespace you'll also have to patch your content types to use our fieldtraverser aware widgets. With this in mind using this product should not be a problem. For your pleasure ================= An "Easter egg" can be found when opening "++resource++plone.jpg" in your Plone site. For more information read archetypes/fieldtraverser/tests/plone.jpg.CREDITS Copyright ========= Copyright (c) 2008: BlueDynamics Alliance, Austria Alan Farmer (c) 1997 from Bearos Records for plone.jpg Credits ======= - Jens Klein <jens@bluedynamics.com> - Johannes Raggam <johannes@bluedynamics.com> - Robert Niederreiter <rnix@squarewave.at>

نحوه نصب

نصب پکیج whl archetypes.fieldtraverser-0.4.4:

pip install archetypes.fieldtraverser-0.4.4.whl

نصب پکیج tar.gz archetypes.fieldtraverser-0.4.4:

pip install archetypes.fieldtraverser-0.4.4.tar.gz