Thanks for your answer, but I do need a ManyToManyField().
In case anyone is curious about the answer, I solved my problem by
overriding my custom admin form's save method. In save(), I checked for the
existence of the file field in self.files; passed self.files to a document
form, which populates a new Document object, returns that (using
commit=False), save it manually so we can get the new primary key, then add
that primary key to Publication's form's documents field
(self.cleaned_data['documents']); then save the whole thing to the database
using super(). Turned out this was lot simpler than I originally thought it
would be, fortunately.
admin.py:
class PublicationAdmin (models.AdminForm):
form = CustomForm
forms.py:
class DocumentForm (models.ModelForm):
class Meta:
model = Document
class CustomForm (models.ModelForm):
class Meta:
model = Publication
# custom documentwidget is a hiden select box of document ids
# with some jquery, and a file upload field
documents = forms.MultipleChoiceField(widget=CustomDocumentWidget)
def save(self, *args, **kwargs):
if 'file' in self.files:
docform = DocumentForm(files=self.files)
document = docform.save(commit=False)
document.save()
if document.pk: # add m2m relation with new document
self.cleaned_data['documents'].append(document.pk)
super(CustomForm, self).save(*args, **kwargs)
return self.instance
Henry A
On Mon, Mar 15, 2010 at 2:58 PM, pjrhar...@gmail.com <pjrhar...@gmail.com>wrote:
> On Mar 12, 12:42 pm, Henry A <henr...@gmail.com> wrote:
> > Hi,
> >
> > For a client, I've got the following (simplified) models:
> >
> > class Document (models.Model):
> > file = models.FileField()
> >
> > class Publication (models.Model):
> > title = models.CharField()
> > ...
> > documents = models.ManyToManyField(Document)
> >
>
> Do you need a ManyToManyField here? I.E. can a document be in more
> than one Publication? I suspect you actually want:
>
> class Document (models.Model):
> file = models.FileField()
> publication = models.ForeignKey('Publication')
>
> class Publication (models.Model):
> title = models.CharField()
>
> Then you can use inline admin forms:
>
> http://docs.djangoproject.com/en/dev/ref/contrib/admin/#inlinemodeladmin-objects
>
> In 1.2 there is now a nifty jQuery interface so you can keep adding
> documents.
>
> Hope that helps
>
> Peter
>
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