Are you sure the data will be retrieved twice ? I thought those
queryset definitions were lazy, so they are only executed when the
widgets are rendered.
Hmm, I'll try that out some time to check.
Koen
On 1 sep, 14:18, patrickk <[EMAIL PROTECTED]> wrote:
> that seems to be possible. on the other hand, it also seems to be a
> strange way to go: instantiating the formset (retrieving all data/
> querysets) and then changing the querysets? performance-wise, this is
> probably not a good solution. and I doubt that this is a good decision
> design-wise ...
>
> thanks,
> patrick
>
> On Sep 1, 1:51 pm, koenb <[EMAIL PROTECTED]> wrote:
>
> > I have not tried this, but can't you just in your view instantiate the
> > formset and then loop over the forms and set the queryset on your
> > field ?
>
> > Koen
>
> > On 1 sep, 09:24, patrickk <[EMAIL PROTECTED]> wrote:
>
> > > found a solution: with using threadlocals, it´s possible to define a
> > > custom manager which only returns the data assigned to the currently
> > > logged-in user. since threadlocals has been considered a "hack"
> > > recently by one of the main django-developers (I think it was
> > > malcolm), this is probably not the best thing to do though.
>
> > > On Aug 31, 4:35 pm, patrickk <[EMAIL PROTECTED]> wrote:
>
> > > > sorry for being so annoying with this issue, but I´m asking this one
> > > > more time.
>
> > > > - with using inlineformset_factory, my problem is that limiting the
> > > > choices to the currently logged-in user seems impossible. I´ve just
> > > > tried to write a custom manger with "use_for_related_fields = True",
> > > > but it´s also not possible to limit the basic queryset to the current
> > > > user.
>
> > > > so - before going back to pure forms and re-writing the main part of
> > > > my application, I´m just asking this question for the last time ...
>
> > > > thanks,
> > > > patrick
>
> > > > On Aug 27, 9:04 am, patrickk <[EMAIL PROTECTED]> wrote:
>
> > > > > anyone?
>
> > > > > On Aug 26, 12:19 pm, patrickk <[EMAIL PROTECTED]> wrote:
>
> > > > > > scenario: users are uploading documents (e.g. images, files, ...).
> > > > > > these documents are saved in a model "Attachment" assigned to the
> > > > > > currently logged-in "User". now, every user has the possibility to
> > > > > > attach documents to a blog-entry. these attachments are saved in a
> > > > > > model "BlogEntryAttachment" assigned to a "BlogEntry".
> > > > > > the best way to achieve this is probably using formsets. when
> > > > > > writing
> > > > > > a BlogEntry, the user has the option to attach his/her documents to
> > > > > > that BlogEntry. to achieve this, I have to limit the choices (of a
> > > > > > select-field) to the currenlty logged-in User.
>
> > > > > > questions & notes:
> > > > > > ### how can I limit the choices of a select-field using formsets?
> > > > > > ### I've tried inlineformset_factory, but there's no argument
> > > > > > "initial". besides that, I´m not sure how to use "initial" for
> > > > > > limiting a queryset ...
> > > > > > ### with using formset_factory on the other hand, I could use a
> > > > > > ModelChoiceField with queryset=Attachment.objects.filter(user=user),
> > > > > > but how do I get the "user" there?
> > > > > > ### Overriding __init__ within BlogEntryAttachmentForm and passing
> > > > > > the
> > > > > > currently logged-in user seems possible, but then I also have to
> > > > > > override the BaseFormSets __init__ and _construct_form, which just
> > > > > > seems ugly and far too complicated.
>
> > > > > > MODELS:
>
> > > > > > class Attachment(models.Model):
>
> > > > > > user = models.ForeignKey('auth.User')
> > > > > > title = models.CharField('Title', max_length=100, blank=True,
> > > > > > null=True)
> > > > > > filename = models.CharField('Filename', max_length=100,
> > > > > > blank=True, null=True)
> > > > > > path = models.CharField('Path', max_length=200, blank=True,
> > > > > > null=True)
> > > > > > ...
>
> > > > > > class BlogEntryAttachment(models.Model):
>
> > > > > > blogentry = models.ForeignKey(BlogEntry)
> > > > > > attachment = models.ForeignKey(Attachment)
> > > > > > ....
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