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    "info": {
        "author": "Asko Soukka",
        "author_email": "asko.soukka@iki.fi",
        "bugtrack_url": null,
        "classifiers": [
            "Development Status :: 7 - Inactive",
            "Programming Language :: Python",
            "Topic :: Software Development :: Libraries :: Python Modules"
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        "description": "schema.Object made simple\r\n=========================\r\n\r\nThis package introduces an experimental proof-of-concept support for\r\nobject-fields (*zope.schema.Object*) on z3c.form and Plone for a\r\nuse-case where one desires to save schema based hierarchical data on\r\nobjects.\r\n\r\nI can't say, why anyone would like to do that (instead of mapping data\r\nto containers and items), but I hope this package provides examples,\r\nhow to make object-fields work with *plone.autoform* and Plone's\r\nKSS-validation.\r\n\r\nThis package\r\n\r\n* provides *ISubformFactory* for object-widget within *IAutoExtensibleForm*\r\n* implements simple Plone-style *input* and *display* widgets for object-field\r\n* introduces refactored KSS-validation integration with support for object-field\r\n* monkeypatches ``plone.z3cform``\\'s widget traversal to support object-widgets\r\n* overrides default *DataConverter* for *ObjectWidget*\\'s with a less invasive one\r\n* provides a simple abstract factory class to store object-fields'\r\n  values as *SimpleItem*-properties.\r\n\r\nNote that this package relies on ``plone.app.z3cform`` and\r\n*IPloneFormLayer* it registers.\r\n\r\nExample of Use\r\n==============\r\n\r\nAt first we define a simple schema we'd like to re-use as a part of other schemas::\r\n\r\n  from zope import schema\r\n  from zope.interface import invariant, Invalid\r\n\r\n  from plone.directives import form\r\n\r\n  from zope.i18nmessageid import MessageFactory as ZopeMessageFactory\r\n  _= ZopeMessageFactory(\"my.package\")\r\n\r\n\r\n  class StartBeforeEnd(Invalid):\r\n      __doc__ = _(u\"The start or end date is invalid\")\r\n\r\n\r\n  class IPeriod(form.Schema):\r\n      start = schema.Date(\r\n          title=_(u\"period_start_label\",\r\n                  default=u\"Period began\"),\r\n          required=True\r\n          )\r\n\r\n      end = schema.Date(\r\n          title=_(u\"period_end_label\",\r\n                  default=u\"Period ended\"),\r\n          required=True\r\n          )\r\n\r\n      @invariant\r\n      def validateStartEnd(data):\r\n          if data.start is not None and data.end is not None:\r\n              if data.start > data.end:\r\n                  raise StartBeforeEnd(\\\r\n                      _(u\"The start date must be before the end date.\"))\r\n\r\nThen we define the main schema, which re-uses the first schema::\r\n\r\n  class IWorkPeriod(form.Schema):\r\n      title = schema.TextLine(\r\n          title=_(u\"work_title_label\",\r\n                  default=u\"Title\"),\r\n          required=True\r\n          )\r\n      description = schema.TextLine(\r\n          title=_(u\"work_description_label\",\r\n                  default=u\"Description\"),\r\n          required=False\r\n          )\r\n      period = schema.Object(\r\n          title=_(u\"work_period\",\r\n                  default=u\"Period\"),\r\n          schema=IPeriod,\r\n          required=True\r\n          )\r\n\r\nFinally, we register an object factor, which creates *SimpleItem*\r\nmatching our schema for *z3c.form* to validate and store as a\r\nproperty of the actual object being created or edited::\r\n\r\n  from five import grok\r\n\r\n  from zope.interface import Interface\r\n\r\n  from z3c.form.interfaces import IObjectFactory\r\n\r\n  from jyu.formwidget.object.factory import AbstractBaseFactory\r\n\r\n  from my.package.schemas import IPeriod\r\n\r\n\r\n  class PeriodFactory(AbstractBaseFactory, grok.MultiAdapter):\r\n      grok.provides(IObjectFactory)\r\n      grok.name(\"my.package.schemas.IPeriod\")\r\n      grok.adapts(Interface, Interface, Interface, Interface)\r\n\r\nTo be able to test this, you should, of course, also define and\r\nregister a new content type based on the main schema (e.g. with\r\nDexterity).\r\n\r\nChangelog\r\n=========\r\n\r\n1.0b7 - 2011-02-23\r\n------------------\r\n\r\n* Fixed datamanager to work as attribute field by default to \r\n  fix problems with `plone.app.textfield` and `plone.namedfile`.\r\n\r\n1.0b6 - 2011-01-28\r\n------------------\r\n\r\n* Added note about problems of `plone.app.textfield` and `plone.namedfile`.\r\n\r\n1.0b5 - 2011-01-24\r\n------------------\r\n\r\n* Merged changes from `plone.app.z3form` (0.5.3) to `validation.py`.\r\n\r\n1.0b4 - 2011-01-19\r\n------------------\r\n\r\n* Fixed datamanager to initialize object attribute also when it\r\n  already exists with None.\r\n\r\n1.0b3 - 2011-01-07\r\n------------------\r\n\r\n* Fixed validator and data converter to handle sub object field.\r\n\r\n1.0b2 - 2010-12-23\r\n------------------\r\n\r\n* Refactored to use custom DataConverter and DataManager instead of\r\n  the one shipped with ``z3c.form``.\r\n\r\n1.0b1 - 2010-12-20\r\n------------------\r\n\r\n* Initial release",
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