Fixed #22786 -- Documented value_from_datadict caveat
Thanks blueyed for the report and Tim Graham for the review.
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@ -230,7 +230,12 @@ foundation for custom widgets.
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.. method:: value_from_datadict(data, files, name)
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.. method:: value_from_datadict(data, files, name)
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Given a dictionary of data and this widget's name, returns the value
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Given a dictionary of data and this widget's name, returns the value
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of this widget. Returns ``None`` if a value wasn't provided.
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of this widget. ``files`` may contain data coming from
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:attr:`request.FILES <django.http.HttpRequest.FILES>`. Returns ``None``
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if a value wasn't provided. Note also that ``value_from_datadict`` may
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be called more than once during handling of form data, so if you
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customize it and add expensive processing, you should implement some
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caching mechanism yourself.
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.. class:: MultiWidget(widgets, attrs=None)
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.. class:: MultiWidget(widgets, attrs=None)
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