Re: SimpleListFilter is giving "NotImplementedError"

On Fri, Nov 23, 2012 at 12:17 PM, Lachlan Musicman <datakid@gmail.com> wrote:
>>> Hola,
>>>
>>> After successfully implementing two range based filters using the admin's
>>> list_filter docs:
>>> PATH/ref/contrib/admin/index.html#django.contrib.admin.ModelAdmin.list_filter
>>>
>>> I've added one more filter, but now I'm getting a NotImplementedError and I
>>> can't see what I've done wrong. The model has a field called "island" and I
>>> would like to distinguish between the main island and the "outer islands"
>>> (all the rest). Note the commented out returns - me trying to find any
>>> subtle changes to fix this:
>>>
>>> class IslandFilter(admin.SimpleListFilter):
>>> title = 'islands'
>>> parameter_name = 'island'
>>>
>>> def lookup(self, request, model_admin):
>>> return (
>>> ('tarawa', 'Tarawa'),
>>> ('outer-islands', 'Outer Islands'),
>>> )


The error is here - we need to define lookups not lookup. <redface>



>>>
>>> def queryset(self, request, queryset):
>>> if self.value == 'tarawa':
>>> return queryset.filter(island=='Tarawa')
>>
>> Is it that typo? '=='
>
> Tom, thanks for your reply. No, that's not a typo, as noted it's an
> attempt to see what the problem might be. I've just changed the code
> back to the original code (below) to test again, and it's still
> failing, with the same error
>
> return queryset.filter(island__exact='Tarawa')
> return queryset.exclude(island__exact='Tarawa')
>
> Cheers
> L.
>
> --
> ...we look at the present day through a rear-view mirror. This is
> something Marshall McLuhan said back in the Sixties, when the world
> was in the grip of authentic-seeming future narratives. He said, "We
> look at the present through a rear-view mirror. We march backwards
> into the future."
>
> http://www.warrenellis.com/?p=14314



--
...we look at the present day through a rear-view mirror. This is
something Marshall McLuhan said back in the Sixties, when the world
was in the grip of authentic-seeming future narratives. He said, "We
look at the present through a rear-view mirror. We march backwards
into the future."

http://www.warrenellis.com/?p=14314

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