Re: Limiting queryset on ModelAdmin based on date field

[Alvaro Mouriño]

On Thu, Sep 24, 2009 at 2:52 AM, Brian McKeever  wrote:
>
> I'm not too familiar with customizing the admin, but you want to use
> the range field lookup.
>
> http://docs.djangoproject.com/en/dev/ref/models/querysets/#range

Thanks McKeever, but that's actually the problem: I don't know the
date the instance was created, so I don't know which range to ask for.

-- 
AlvAro

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Re: Limiting queryset on ModelAdmin based on date field

[Alvaro Mouriño]

On Thu, Sep 24, 2009 at 6:19 AM, Daniel Roseman  wrote:
>
> On Sep 24, 6:07 am, Alvaro Mouriño  wrote:
>> Hi list.
>>
>> I'm developing a news application that handles articles, about 10 new
>> articles each day. The site administrator every morning selects from a
>> drop-down-list the ones that hit the front page. As time goes by this
>> list grows bigger and bigger, and what's worst, old articles doesn't
>> even matter at all.
>>
>> I could sort by creation date and limit the queryset with the
>> ModelAdmin.formfield_for_foreignkey method. I do both, but it's not
>> perfect.
>>
>> Nowadays I limit the list of articles to only the ones published today
>> and yesterday. The problem with this is that when editing an instance,
>> if old enough (more than two days) no articles will show up, not even
>> the selected one, which as you could imagine makes editing old
>> instances impossible.
>>
>> I'd like to know if there's a way to access an attribute of the
>> instance in the formfield_for_foreignkey method so I can tell django
>> to display a list of articles based on the creation date (only the
>> articles created that day and the day before.)
>>
>> (I could use a raw_id_field but it would be a usability problem to not
>> see the article's title in the same page.)
>>
>> Regards,
>>
>> --
>> AlvAro
>
> This is probably outside the scope of what can be achieved via
> formfield_for_foreignkey. However it would be possible by defining a
> custom form and overriding the __init__ method. After calling super(),
> you can then modify the queryset of the FK field - you would have
> access to the current instance via self.instance.

I'll take a look at that. Thanks!

-- 
AlvAro

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Re: Limiting queryset on ModelAdmin based on date field

[Daniel Roseman]

On Sep 24, 6:07 am, Alvaro Mouriño  wrote:
> Hi list.
>
> I'm developing a news application that handles articles, about 10 new
> articles each day. The site administrator every morning selects from a
> drop-down-list the ones that hit the front page. As time goes by this
> list grows bigger and bigger, and what's worst, old articles doesn't
> even matter at all.
>
> I could sort by creation date and limit the queryset with the
> ModelAdmin.formfield_for_foreignkey method. I do both, but it's not
> perfect.
>
> Nowadays I limit the list of articles to only the ones published today
> and yesterday. The problem with this is that when editing an instance,
> if old enough (more than two days) no articles will show up, not even
> the selected one, which as you could imagine makes editing old
> instances impossible.
>
> I'd like to know if there's a way to access an attribute of the
> instance in the formfield_for_foreignkey method so I can tell django
> to display a list of articles based on the creation date (only the
> articles created that day and the day before.)
>
> (I could use a raw_id_field but it would be a usability problem to not
> see the article's title in the same page.)
>
> Regards,
>
> --
> AlvAro

This is probably outside the scope of what can be achieved via
formfield_for_foreignkey. However it would be possible by defining a
custom form and overriding the __init__ method. After calling super(),
you can then modify the queryset of the FK field - you would have
access to the current instance via self.instance.
--
DR.
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Re: Limiting queryset on ModelAdmin based on date field

[Brian McKeever]

I'm not too familiar with customizing the admin, but you want to use
the range field lookup.

http://docs.djangoproject.com/en/dev/ref/models/querysets/#range

On Sep 23, 11:07 pm, Alvaro Mouriño  wrote:
> Hi list.
>
> I'm developing a news application that handles articles, about 10 new
> articles each day. The site administrator every morning selects from a
> drop-down-list the ones that hit the front page. As time goes by this
> list grows bigger and bigger, and what's worst, old articles doesn't
> even matter at all.
>
> I could sort by creation date and limit the queryset with the
> ModelAdmin.formfield_for_foreignkey method. I do both, but it's not
> perfect.
>
> Nowadays I limit the list of articles to only the ones published today
> and yesterday. The problem with this is that when editing an instance,
> if old enough (more than two days) no articles will show up, not even
> the selected one, which as you could imagine makes editing old
> instances impossible.
>
> I'd like to know if there's a way to access an attribute of the
> instance in the formfield_for_foreignkey method so I can tell django
> to display a list of articles based on the creation date (only the
> articles created that day and the day before.)
>
> (I could use a raw_id_field but it would be a usability problem to not
> see the article's title in the same page.)
>
> Regards,
>
> --
> AlvAro
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Limiting queryset on ModelAdmin based on date field

[Alvaro Mouriño]

Hi list.

I'm developing a news application that handles articles, about 10 new
articles each day. The site administrator every morning selects from a
drop-down-list the ones that hit the front page. As time goes by this
list grows bigger and bigger, and what's worst, old articles doesn't
even matter at all.

I could sort by creation date and limit the queryset with the
ModelAdmin.formfield_for_foreignkey method. I do both, but it's not
perfect.

Nowadays I limit the list of articles to only the ones published today
and yesterday. The problem with this is that when editing an instance,
if old enough (more than two days) no articles will show up, not even
the selected one, which as you could imagine makes editing old
instances impossible.

I'd like to know if there's a way to access an attribute of the
instance in the formfield_for_foreignkey method so I can tell django
to display a list of articles based on the creation date (only the
articles created that day and the day before.)

(I could use a raw_id_field but it would be a usability problem to not
see the article's title in the same page.)

Regards,

-- 
AlvAro

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