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Fix prepare_lookup_value to handle '0' for _isnull #982

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benjiec commented Apr 2, 2013

In contrib.admin.util, there is a prepare_lookup_value function

In this function, there is a clause

if value.lower() in ('', 'false'):
        value = False

I think it should be

if value.lower() in ('', 'false', '0'):
      value = False

Note that in admin already converts a limit_choices_to={'a__isnull': False} to a__isnull=0 when formatting a query string for lookup on the remote model. Therefore, clearly it should also handle isnull=0 correctly. Currently the lookup popup box on remote model uses __isnull=0 and does not actually filter.


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benjiec Apr 3, 2013

Closing this pull request to open a new one.

benjiec commented Apr 3, 2013

Closing this pull request to open a new one.

@benjiec benjiec closed this Apr 3, 2013

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