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An uberselection widget for z3c.form.

Project description


This package provides a query source compatible with z3c.formwidget.query which combines to an uberselection widget for the z3c.form form generation framework.

The native value type for the widget is Archetypes UID collections.


>>> from collective.formwidget.uberselect.archetypes import \
...     ArchetypesContentSourceBinder
>>> class ISelection(interface.Interface):
...     items = schema.Set(
...         title=u"Selection",
...         description=u"Search for content.",
...         value_type=schema.Choice(
...             source=ArchetypesContentSourceBinder()
...         )
...     )

Weak references

A recipe to store references as persistent.wref.WeakRef instead of UID is to use the uid2wref adapter between the form and the context.

>>> from collective.formwidget.uberselect.wref import uid2wref
>>> Factory = uid2wref(ISelection['items'])

To store weak references instead of UIDs you would register such a factory as a component adapting the context. The factory automatically provides the interface which defines the field.

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