oh, nevermind, I misread the syntax spec for the order by clause
On Mon, Jun 9, 2014 at 5:07 PM, Michael Manfre <mman...@gmail.com> wrote:
> Each expression must be able to define it's own ordering because order_by
> allows you to define a sort based upon multiple expressions.
>
>
> On Mon, Jun 9, 2014 at 4:00 PM, Daniel Moisset <dmois...@machinalis.com>
> wrote:
>
>> I see everyone trying to put the direction (ascending vs decending)
>> inside the expression, while it's actually a property of the ordering
>> clause. Wouldn't it make more sense and avoid ambiguities to do:
>>
>> qs.order_by(..., descending=True)
>>
>> ?
>>
>> Then you can add functions (and even a __neg__ operator to fields mapped
>> to SQL unary minus) and still have a clear separation of functions vs order
>> direction.
>>
>> D.
>>
>>
>>
>> On Mon, Jun 9, 2014 at 4:44 PM, Tim Martin <t...@asymptotic.co.uk> wrote:
>>
>>> My concern about the filter(foobar_lt=-F('baz')) issue is that it
>>> violates the principle of least surprise: it will be accepted silently and
>>> do something that nobody could expect unless they know a bit about the
>>> internals. However, I think having some special case code in filter(),
>>> annotate() and anything else that takes expressions would be OK. Provided
>>> it throws some kind of exception, I think it resolves my concern.
>>>
>>> I'll go ahead and try to implement this using __neg__() to invert the
>>> ordering.
>>>
>>> Tim
>>>
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