Ming sort command

[Ferdinand Holzner]

Hi,

i'm trying to figure out how to implement sorting into the DataGrid using MongoDB with ming.

Basically i took the example in the DataGrid documentation and tried to change it for Ming.

ordering = kw.get('ordercol')

if ordering and ordering[0] == '+':
    places = places.sort(ordering[1:], ming.DESCENDING) # Descending

elif ordering and ordering[0] == '-':
    places = places.sort(ordering[1:], ming.ASCENDING) # Ascending

But for some reason it doesn't work. It crashes with the following error message:

TypeError: must use keyword argument for key function

I also tried to enter the keyword instead of "ordering[1:]", but i get the same error. Any idea what's wrong?

[Alessandro Molina]

As you can sort by multiple fields, it should be .sort([(fieldname, order)]) you miss a [ ]

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[Ferdinand Holzner]

Not sure why i don't get a e-mail if someone posts, although i've set it so...

Thanks, got it working now.

Am Montag, 17. Oktober 2016 22:24:10 UTC+2 schrieb Alessandro Molina:

As you can sort by multiple fields, it should be .sort([(fieldname, order)]) you miss a [ ]

On Mon, Oct 17, 2016 at 6:32 PM, Ferdinand Holzner <ferdinan...@gmail.com> wrote:

Hi,

i'm trying to figure out how to implement sorting into the DataGrid using MongoDB with ming.

Basically i took the example in the DataGrid documentation and tried to change it for Ming.

ordering = kw.get('ordercol')

if ordering and ordering[0] == '+':
    places = places.sort(ordering[1:], ming.DESCENDING) # Descending

elif ordering and ordering[0] == '-':
    places = places.sort(ordering[1:], ming.ASCENDING) # Ascending

But for some reason it doesn't work. It crashes with the following error message:

TypeError: must use keyword argument for key function

I also tried to enter the keyword instead of "ordering[1:]", but i get the same error. Any idea what's wrong?

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